./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:41:21,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:41:21,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:41:21,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:41:21,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:41:21,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:41:21,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:41:21,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:41:21,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:41:21,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:41:21,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:41:21,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:41:21,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:41:21,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:41:21,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:41:21,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:41:21,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:41:21,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:41:21,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:41:21,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:41:21,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:41:21,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:41:21,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:41:21,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:41:21,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:41:21,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:41:21,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:41:21,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:41:21,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:41:21,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:41:21,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:41:21,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:41:21,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:41:21,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:41:21,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:41:21,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:41:21,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:41:21,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:41:21,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:41:21,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:41:21,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:41:21,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:41:21,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:41:21,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:41:21,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:41:21,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:41:21,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:41:21,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:41:21,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:41:21,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:41:21,758 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:41:21,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:41:21,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:41:21,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:41:21,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:41:21,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:41:21,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:41:21,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:41:21,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:41:21,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:41:21,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:41:21,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:41:21,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:41:21,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:41:21,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:41:21,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:41:21,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:41:21,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:41:21,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:41:21,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:41:21,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:41:21,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:41:21,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:41:21,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-12-16 03:41:21,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:41:21,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:41:21,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:41:21,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:41:21,985 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:41:21,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-16 03:41:22,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3590c328/cdf905dcdc9140de96a481fab80488b6/FLAG95f66cfaa [2021-12-16 03:41:22,546 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:41:22,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-16 03:41:22,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3590c328/cdf905dcdc9140de96a481fab80488b6/FLAG95f66cfaa [2021-12-16 03:41:22,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3590c328/cdf905dcdc9140de96a481fab80488b6 [2021-12-16 03:41:22,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:41:22,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:41:22,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:41:22,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:41:22,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:41:22,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:41:22" (1/1) ... [2021-12-16 03:41:22,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2596ae51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:22, skipping insertion in model container [2021-12-16 03:41:22,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:41:22" (1/1) ... [2021-12-16 03:41:22,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:41:22,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:41:23,578 WARN L230 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-16 03:41:23,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:23,617 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:41:23,832 WARN L230 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-16 03:41:23,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:23,874 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:41:23,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23 WrapperNode [2021-12-16 03:41:23,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:41:23,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:41:23,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:41:23,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:41:23,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:23,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:23,970 INFO L137 Inliner]: procedures = 143, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 484 [2021-12-16 03:41:23,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:41:23,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:41:23,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:41:23,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:41:23,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:23,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:23,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:23,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:23,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:24,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:24,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:24,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:41:24,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:41:24,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:41:24,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:41:24,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (1/1) ... [2021-12-16 03:41:24,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:41:24,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:41:24,076 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) [2021-12-16 03:41:24,123 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 [2021-12-16 03:41:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-12-16 03:41:24,148 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-12-16 03:41:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:41:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-12-16 03:41:24,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:41:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:41:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:41:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-12-16 03:41:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-16 03:41:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-16 03:41:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-16 03:41:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:41:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:41:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:41:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-16 03:41:24,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-16 03:41:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:41:24,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:41:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-16 03:41:24,150 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-16 03:41:24,292 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:41:24,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:41:24,621 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:41:24,625 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:41:24,626 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:41:24,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:24 BoogieIcfgContainer [2021-12-16 03:41:24,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:41:24,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:41:24,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:41:24,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:41:24,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:41:22" (1/3) ... [2021-12-16 03:41:24,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53559a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:41:24, skipping insertion in model container [2021-12-16 03:41:24,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:23" (2/3) ... [2021-12-16 03:41:24,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53559a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:41:24, skipping insertion in model container [2021-12-16 03:41:24,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:24" (3/3) ... [2021-12-16 03:41:24,633 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-16 03:41:24,637 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:41:24,637 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:41:24,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:41:24,673 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 [2021-12-16 03:41:24,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:41:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-16 03:41:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 03:41:24,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:24,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:24,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:24,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1803778122, now seen corresponding path program 1 times [2021-12-16 03:41:24,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:24,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786696733] [2021-12-16 03:41:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:24,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:24,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786696733] [2021-12-16 03:41:24,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786696733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:24,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:24,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:24,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861444502] [2021-12-16 03:41:24,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:24,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:24,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:25,027 INFO L87 Difference]: Start difference. First operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:25,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:25,111 INFO L93 Difference]: Finished difference Result 346 states and 438 transitions. [2021-12-16 03:41:25,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-16 03:41:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:25,125 INFO L225 Difference]: With dead ends: 346 [2021-12-16 03:41:25,126 INFO L226 Difference]: Without dead ends: 216 [2021-12-16 03:41:25,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:25,132 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 139 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:25,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 303 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:41:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-16 03:41:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-16 03:41:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2181818181818183) internal successors, (201), 166 states have internal predecessors, (201), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-16 03:41:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 265 transitions. [2021-12-16 03:41:25,204 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 265 transitions. Word has length 15 [2021-12-16 03:41:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:25,205 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 265 transitions. [2021-12-16 03:41:25,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 265 transitions. [2021-12-16 03:41:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-16 03:41:25,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:25,211 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:25,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:41:25,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:25,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1193905023, now seen corresponding path program 1 times [2021-12-16 03:41:25,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:25,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786849735] [2021-12-16 03:41:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:25,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:41:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:41:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:41:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:41:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:41:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 03:41:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:41:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:41:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-16 03:41:25,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:25,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786849735] [2021-12-16 03:41:25,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786849735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:25,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:25,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:41:25,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735733660] [2021-12-16 03:41:25,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:25,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:41:25,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:25,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:41:25,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:41:25,453 INFO L87 Difference]: Start difference. First operand 216 states and 265 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 03:41:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:25,608 INFO L93 Difference]: Finished difference Result 428 states and 526 transitions. [2021-12-16 03:41:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:41:25,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2021-12-16 03:41:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:25,611 INFO L225 Difference]: With dead ends: 428 [2021-12-16 03:41:25,611 INFO L226 Difference]: Without dead ends: 220 [2021-12-16 03:41:25,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:41:25,613 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 33 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:25,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 450 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:41:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-16 03:41:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2021-12-16 03:41:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2121212121212122) internal successors, (200), 166 states have internal predecessors, (200), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-16 03:41:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2021-12-16 03:41:25,625 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 78 [2021-12-16 03:41:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:25,625 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2021-12-16 03:41:25,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 03:41:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2021-12-16 03:41:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 03:41:25,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:25,628 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:25,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:41:25,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash -391319208, now seen corresponding path program 1 times [2021-12-16 03:41:25,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:25,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774865631] [2021-12-16 03:41:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:25,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:41:25,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 03:41:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:41:25,829 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 03:41:25,829 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 03:41:25,830 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-16 03:41:25,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:41:25,833 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-16 03:41:25,835 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 03:41:25,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:41:25 BoogieIcfgContainer [2021-12-16 03:41:25,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 03:41:25,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 03:41:25,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 03:41:25,936 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 03:41:25,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:24" (3/4) ... [2021-12-16 03:41:25,939 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 03:41:25,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 03:41:25,940 INFO L158 Benchmark]: Toolchain (without parser) took 3148.50ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 107.1MB in the beginning and 99.2MB in the end (delta: 7.9MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2021-12-16 03:41:25,940 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:41:25,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1083.79ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 107.1MB in the beginning and 97.3MB in the end (delta: 9.8MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2021-12-16 03:41:25,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.49ms. Allocated memory is still 163.6MB. Free memory was 96.6MB in the beginning and 91.7MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 03:41:25,947 INFO L158 Benchmark]: Boogie Preprocessor took 64.43ms. Allocated memory is still 163.6MB. Free memory was 91.7MB in the beginning and 88.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 03:41:25,948 INFO L158 Benchmark]: RCFGBuilder took 590.79ms. Allocated memory is still 163.6MB. Free memory was 88.2MB in the beginning and 104.2MB in the end (delta: -16.0MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2021-12-16 03:41:25,948 INFO L158 Benchmark]: TraceAbstraction took 1307.19ms. Allocated memory is still 163.6MB. Free memory was 103.4MB in the beginning and 99.2MB in the end (delta: 4.2MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2021-12-16 03:41:25,948 INFO L158 Benchmark]: Witness Printer took 3.23ms. Allocated memory is still 163.6MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:41:25,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1083.79ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 107.1MB in the beginning and 97.3MB in the end (delta: 9.8MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.49ms. Allocated memory is still 163.6MB. Free memory was 96.6MB in the beginning and 91.7MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.43ms. Allocated memory is still 163.6MB. Free memory was 91.7MB in the beginning and 88.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 590.79ms. Allocated memory is still 163.6MB. Free memory was 88.2MB in the beginning and 104.2MB in the end (delta: -16.0MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1307.19ms. Allocated memory is still 163.6MB. Free memory was 103.4MB in the beginning and 99.2MB in the end (delta: 4.2MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * Witness Printer took 3.23ms. Allocated memory is still 163.6MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 4185. Possible FailurePath: [L3648] static int major ; [L3649] static int index ; [L3974-L3975] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4173-L4174] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4175-L4178] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4179-L4180] static struct virtio_driver virtio_blk = {{"virtio_blk", 0, & __this_module, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}, (struct virtio_device_id const *)(& id_table), (unsigned int const *)(& features), 9U, & virtblk_probe, & virtblk_remove, 0}; [L4202] struct virtio_device_id const __mod_virtio_device_table ; [L4207] int LDV_IN_INTERRUPT ; [L4348] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4210] struct block_device *var_group1 ; [L4211] fmode_t var_virtblk_ioctl_5_p1 ; [L4212] unsigned int var_virtblk_ioctl_5_p2 ; [L4213] unsigned long var_virtblk_ioctl_5_p3 ; [L4214] struct hd_geometry *var_group2 ; [L4215] int tmp ; [L4216] int tmp___0 ; [L4217] int tmp___1 ; [L4219] LDV_IN_INTERRUPT = 1 [L4220] FCALL ldv_initialize() [L4221] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4222] CALL, EXPR init() [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] RET, EXPR register_blkdev(0U, "virtblk") [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4190] CALL, EXPR register_virtio_driver(& virtio_blk) [L4535] return __VERIFIER_nondet_int(); [L4190] RET, EXPR register_virtio_driver(& virtio_blk) [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4222] RET, EXPR init() [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___1=-2, virtblk_fops={12:0}, virtio_blk={15:0}] [L4229] tmp___0 = __VERIFIER_nondet_int() [L4231] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=-2, virtblk_fops={12:0}, virtio_blk={15:0}] [L4232] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=-2, virtblk_fops={12:0}, virtio_blk={15:0}] [L4233] CALL virtblk_ioctl(var_group1, var_virtblk_ioctl_5_p1, var_virtblk_ioctl_5_p2, var_virtblk_ioctl_5_p3) [L3912] struct gendisk *disk ; [L3913] struct virtio_blk *vblk ; [L3914] void *usr_data ; [L3915] char id_str[20U] ; [L3916] int err ; [L3917] int tmp ; [L3918] bool tmp___0 ; [L3919] int tmp___1 ; [L3920] int tmp___2 ; [L3922] EXPR bdev->bd_disk [L3922] disk = bdev->bd_disk [L3923] EXPR disk->private_data [L3923] vblk = (struct virtio_blk *)disk->private_data [L3924] COND TRUE cmd == 1447184708U [L3925] usr_data = (void *)data [L3926] CALL, EXPR virtblk_get_id(disk, (char *)(& id_str)) [L3879] struct virtio_blk *vblk ; [L3880] struct request *req ; [L3881] struct bio *bio ; [L3882] long tmp ; [L3883] long tmp___0 ; [L3884] long tmp___1 ; [L3885] long tmp___2 ; [L3886] int tmp___3 ; [L3888] EXPR disk->private_data [L3888] vblk = (struct virtio_blk *)disk->private_data [L3889] EXPR vblk->disk [L3889] EXPR (vblk->disk)->queue [L3889] CALL, EXPR bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4427] CALL, EXPR ldv_malloc(sizeof(struct bio)) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [\old(size)=112, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, size=112, virtblk_fops={12:0}, virtio_blk={15:0}] [L4427] RET, EXPR ldv_malloc(sizeof(struct bio)) VAL [\old(arg2)=20, \old(arg3)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, arg0={18446744073709551615:18446744073709551618}, arg0={18446744073709551615:18446744073709551618}, arg1={17:0}, arg1={17:0}, arg2=20, arg3=208, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct bio))={0:0}, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] RET, EXPR bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L3890] CALL, EXPR IS_ERR((void const *)bio) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4274] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] CALL, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4307] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] RET, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3890] RET, EXPR IS_ERR((void const *)bio) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, bio={0:0}, disk={18446744073709551613:0}, disk={18446744073709551613:0}, features={14:0}, id_str={17:0}, id_str={17:0}, id_table={13:0}, index=0, IS_ERR((void const *)bio)=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L3896] CALL, EXPR ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L4286] CALL, EXPR blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4443] CALL, EXPR ldv_malloc(sizeof(struct request)) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [\old(size)=322, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, size=322, virtblk_fops={12:0}, virtio_blk={15:0}] [L4443] RET, EXPR ldv_malloc(sizeof(struct request)) VAL [\old(arg2)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, arg0={18446744073709551615:18446744073709551618}, arg0={18446744073709551615:18446744073709551618}, arg1={0:0}, arg1={0:0}, arg2=208, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct request))={0:0}, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] RET, EXPR blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4288] CALL ldv_get_blk_rq(ldv_func_res, ldv_func_arg3) [L4351] long tmp ; VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4288] RET ldv_get_blk_rq(ldv_func_res, ldv_func_arg3) [L4289] return (ldv_func_res); VAL [\old(ldv_func_arg3)=208, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, ldv_func_arg1={18446744073709551615:18446744073709551618}, ldv_func_arg1={18446744073709551615:18446744073709551618}, ldv_func_arg2={0:0}, ldv_func_arg2={0:0}, ldv_func_arg3=208, ldv_func_res={0:0}, LDV_IN_INTERRUPT=1, major=0, tmp={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3896] RET, EXPR ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L3897] CALL, EXPR IS_ERR((void const *)req) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4274] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] CALL, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4307] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] RET, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3897] RET, EXPR IS_ERR((void const *)req) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, bio={0:0}, disk={18446744073709551613:0}, disk={18446744073709551613:0}, features={14:0}, id_str={17:0}, id_str={17:0}, id_table={13:0}, index=0, IS_ERR((void const *)req)=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, req={0:0}, tmp___0=0, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3897] tmp___2 = IS_ERR((void const *)req) [L3898] COND FALSE !(tmp___2 != 0L) [L3904] req->cmd_type = 7 [L3905] EXPR vblk->disk [L3905] EXPR (vblk->disk)->queue [L3905] EXPR vblk->disk [L3905] CALL, EXPR blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L4437] return __VERIFIER_nondet_int(); [L3905] RET, EXPR blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [\result=1, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, bio={0:0}, disk={18446744073709551613:0}, disk={18446744073709551613:0}, features={14:0}, id_str={17:0}, id_str={17:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, req={0:0}, tmp___0=0, tmp___2=0, tmp___3=1, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3926] RET, EXPR virtblk_get_id(disk, (char *)(& id_str)) [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [\old(cmd)=1447184708, \old(data)=18446744073709551612, \old(mode)=6, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, bdev={18446744073709551621:-3}, bdev={18446744073709551621:-3}, cmd=1447184708, data=18446744073709551612, disk={18446744073709551613:0}, err=1, features={14:0}, id_str={17:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=6, usr_data={0:-4}, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3935] return (err); [L3935] return (err); VAL [\old(cmd)=1447184708, \old(data)=18446744073709551612, \old(mode)=6, \result=1, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, bdev={18446744073709551621:-3}, bdev={18446744073709551621:-3}, cmd=1447184708, data=18446744073709551612, disk={18446744073709551613:0}, err=1, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=6, usr_data={0:-4}, vblk={0:-8}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4233] RET virtblk_ioctl(var_group1, var_virtblk_ioctl_5_p1, var_virtblk_ioctl_5_p2, var_virtblk_ioctl_5_p3) [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=0, var_group1={18446744073709551621:-3}, var_virtblk_ioctl_5_p1=6, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=18446744073709551612, virtblk_fops={12:0}, virtio_blk={15:0}] [L4249] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=0, var_group1={18446744073709551621:-3}, var_virtblk_ioctl_5_p1=6, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=18446744073709551612, virtblk_fops={12:0}, virtio_blk={15:0}] [L4250] CALL fini() [L4197] FCALL unregister_blkdev((unsigned int )major, "virtblk") [L4198] FCALL unregister_virtio_driver(& virtio_blk) [L4250] RET fini() [L4252] CALL ldv_check_final_state() [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4387] CALL ldv_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551614:18446744073709551623}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 753 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 325 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=1, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 20/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-16 03:41:25,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:41:28,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:41:28,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:41:28,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:41:28,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:41:28,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:41:28,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:41:28,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:41:28,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:41:28,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:41:28,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:41:28,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:41:28,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:41:28,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:41:28,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:41:28,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:41:28,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:41:28,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:41:28,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:41:28,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:41:28,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:41:28,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:41:28,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:41:28,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:41:28,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:41:28,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:41:28,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:41:28,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:41:28,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:41:28,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:41:28,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:41:28,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:41:28,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:41:28,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:41:28,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:41:28,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:41:28,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:41:28,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:41:28,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:41:28,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:41:28,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:41:28,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-16 03:41:28,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:41:28,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:41:28,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:41:28,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:41:28,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:41:28,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:41:28,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:41:28,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:41:28,252 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:41:28,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:41:28,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:41:28,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:41:28,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:41:28,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:41:28,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 03:41:28,254 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 03:41:28,254 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 03:41:28,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:41:28,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:41:28,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:41:28,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:41:28,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:41:28,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:41:28,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:41:28,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:41:28,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:41:28,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:41:28,255 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 03:41:28,256 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 03:41:28,256 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:41:28,256 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:41:28,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:41:28,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:41:28,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 03:41:28,257 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-12-16 03:41:28,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:41:28,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:41:28,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:41:28,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:41:28,563 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:41:28,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-16 03:41:28,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25d9d770/a396032f8b1e4043b29bc3b3d4b04b68/FLAGfa4f14add [2021-12-16 03:41:29,163 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:41:29,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-16 03:41:29,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25d9d770/a396032f8b1e4043b29bc3b3d4b04b68/FLAGfa4f14add [2021-12-16 03:41:29,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25d9d770/a396032f8b1e4043b29bc3b3d4b04b68 [2021-12-16 03:41:29,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:41:29,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:41:29,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:41:29,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:41:29,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:41:29,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:41:29" (1/1) ... [2021-12-16 03:41:29,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39519966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:29, skipping insertion in model container [2021-12-16 03:41:29,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:41:29" (1/1) ... [2021-12-16 03:41:29,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:41:29,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:41:30,545 WARN L230 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-16 03:41:30,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:30,584 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 03:41:30,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:41:30,778 WARN L230 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-16 03:41:30,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:30,806 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:41:31,081 WARN L230 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-12-16 03:41:31,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:31,133 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:41:31,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31 WrapperNode [2021-12-16 03:41:31,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:41:31,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:41:31,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:41:31,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:41:31,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,240 INFO L137 Inliner]: procedures = 150, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 458 [2021-12-16 03:41:31,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:41:31,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:41:31,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:41:31,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:41:31,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:41:31,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:41:31,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:41:31,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:41:31,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (1/1) ... [2021-12-16 03:41:31,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:41:31,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:41:31,369 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) [2021-12-16 03:41:31,401 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 [2021-12-16 03:41:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 03:41:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-16 03:41:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-12-16 03:41:31,416 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-12-16 03:41:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-16 03:41:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-12-16 03:41:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-12-16 03:41:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:41:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:41:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:41:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:41:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:41:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:41:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:41:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:41:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-12-16 03:41:31,418 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-12-16 03:41:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:41:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:41:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-16 03:41:31,418 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-16 03:41:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-16 03:41:31,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-16 03:41:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-16 03:41:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-16 03:41:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:41:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 03:41:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:41:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 03:41:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-16 03:41:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-16 03:41:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-16 03:41:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:41:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:41:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-16 03:41:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-16 03:41:31,599 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:41:31,600 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:41:32,131 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:41:32,140 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:41:32,140 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:41:32,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:32 BoogieIcfgContainer [2021-12-16 03:41:32,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:41:32,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:41:32,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:41:32,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:41:32,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:41:29" (1/3) ... [2021-12-16 03:41:32,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1967147f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:41:32, skipping insertion in model container [2021-12-16 03:41:32,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:31" (2/3) ... [2021-12-16 03:41:32,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1967147f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:41:32, skipping insertion in model container [2021-12-16 03:41:32,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:32" (3/3) ... [2021-12-16 03:41:32,151 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-12-16 03:41:32,155 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:41:32,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:41:32,191 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:41:32,195 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 [2021-12-16 03:41:32,196 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:41:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-16 03:41:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 03:41:32,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:32,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:32,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1549604235, now seen corresponding path program 1 times [2021-12-16 03:41:32,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:41:32,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998292861] [2021-12-16 03:41:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:32,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:41:32,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:41:32,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:41:32,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 03:41:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:32,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 03:41:32,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:41:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:32,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:41:32,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:41:32,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998292861] [2021-12-16 03:41:32,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998292861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:32,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:32,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:41:32,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54051655] [2021-12-16 03:41:32,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:32,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:32,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:41:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:32,562 INFO L87 Difference]: Start difference. First operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:32,659 INFO L93 Difference]: Finished difference Result 346 states and 438 transitions. [2021-12-16 03:41:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:32,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-16 03:41:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:32,669 INFO L225 Difference]: With dead ends: 346 [2021-12-16 03:41:32,670 INFO L226 Difference]: Without dead ends: 216 [2021-12-16 03:41:32,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:32,680 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 137 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:32,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 303 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:41:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-16 03:41:32,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-16 03:41:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2181818181818183) internal successors, (201), 166 states have internal predecessors, (201), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-16 03:41:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 265 transitions. [2021-12-16 03:41:32,761 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 265 transitions. Word has length 15 [2021-12-16 03:41:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:32,762 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 265 transitions. [2021-12-16 03:41:32,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 265 transitions. [2021-12-16 03:41:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-16 03:41:32,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:32,770 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:32,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 03:41:32,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:41:32,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:32,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1763310802, now seen corresponding path program 1 times [2021-12-16 03:41:32,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:41:32,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054463094] [2021-12-16 03:41:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:32,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:41:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:41:32,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:41:33,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 03:41:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:33,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 03:41:33,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:41:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 03:41:33,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:41:33,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 03:41:33,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054463094] [2021-12-16 03:41:33,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054463094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:33,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:33,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:41:33,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244290025] [2021-12-16 03:41:33,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:33,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:41:33,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 03:41:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:41:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:41:33,519 INFO L87 Difference]: Start difference. First operand 216 states and 265 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 03:41:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:33,580 INFO L93 Difference]: Finished difference Result 424 states and 520 transitions. [2021-12-16 03:41:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:41:33,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2021-12-16 03:41:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:33,586 INFO L225 Difference]: With dead ends: 424 [2021-12-16 03:41:33,586 INFO L226 Difference]: Without dead ends: 216 [2021-12-16 03:41:33,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:41:33,591 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 1 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:33,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 445 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:41:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-16 03:41:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-16 03:41:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.2121212121212122) internal successors, (200), 166 states have internal predecessors, (200), 33 states have call successors, (33), 18 states have call predecessors, (33), 17 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-16 03:41:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2021-12-16 03:41:33,615 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 78 [2021-12-16 03:41:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:33,616 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2021-12-16 03:41:33,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 03:41:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2021-12-16 03:41:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 03:41:33,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:33,618 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:33,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:41:33,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:41:33,834 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:33,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:33,835 INFO L85 PathProgramCache]: Analyzing trace with hash -251868651, now seen corresponding path program 1 times [2021-12-16 03:41:33,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 03:41:33,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773173106] [2021-12-16 03:41:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:33,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 03:41:33,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 03:41:33,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 03:41:33,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 03:41:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:41:34,508 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 03:41:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:41:35,256 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-16 03:41:35,256 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 03:41:35,257 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-16 03:41:35,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:41:35,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 03:41:35,461 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-16 03:41:35,464 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 03:41:35,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:41:35 BoogieIcfgContainer [2021-12-16 03:41:35,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 03:41:35,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 03:41:35,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 03:41:35,611 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 03:41:35,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:32" (3/4) ... [2021-12-16 03:41:35,614 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 03:41:35,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 03:41:35,615 INFO L158 Benchmark]: Toolchain (without parser) took 5968.26ms. Allocated memory was 56.6MB in the beginning and 167.8MB in the end (delta: 111.1MB). Free memory was 26.2MB in the beginning and 73.1MB in the end (delta: -46.9MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. [2021-12-16 03:41:35,615 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 46.1MB. Free memory is still 28.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:41:35,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1476.84ms. Allocated memory was 56.6MB in the beginning and 115.3MB in the end (delta: 58.7MB). Free memory was 39.0MB in the beginning and 77.7MB in the end (delta: -38.6MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2021-12-16 03:41:35,616 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.27ms. Allocated memory is still 115.3MB. Free memory was 77.7MB in the beginning and 72.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 03:41:35,616 INFO L158 Benchmark]: Boogie Preprocessor took 79.23ms. Allocated memory is still 115.3MB. Free memory was 72.5MB in the beginning and 68.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 03:41:35,616 INFO L158 Benchmark]: RCFGBuilder took 820.47ms. Allocated memory is still 115.3MB. Free memory was 68.3MB in the beginning and 56.4MB in the end (delta: 11.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2021-12-16 03:41:35,617 INFO L158 Benchmark]: TraceAbstraction took 3454.22ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 56.4MB in the beginning and 74.2MB in the end (delta: -17.7MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2021-12-16 03:41:35,617 INFO L158 Benchmark]: Witness Printer took 16.50ms. Allocated memory is still 167.8MB. Free memory was 74.2MB in the beginning and 73.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:41:35,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 46.1MB. Free memory is still 28.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1476.84ms. Allocated memory was 56.6MB in the beginning and 115.3MB in the end (delta: 58.7MB). Free memory was 39.0MB in the beginning and 77.7MB in the end (delta: -38.6MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.27ms. Allocated memory is still 115.3MB. Free memory was 77.7MB in the beginning and 72.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.23ms. Allocated memory is still 115.3MB. Free memory was 72.5MB in the beginning and 68.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 820.47ms. Allocated memory is still 115.3MB. Free memory was 68.3MB in the beginning and 56.4MB in the end (delta: 11.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3454.22ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 56.4MB in the beginning and 74.2MB in the end (delta: -17.7MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Witness Printer took 16.50ms. Allocated memory is still 167.8MB. Free memory was 74.2MB in the beginning and 73.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 4185. Possible FailurePath: [L3648] static int major ; [L3649] static int index ; [L3974-L3975] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4173-L4174] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4175-L4178] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4179-L4180] static struct virtio_driver virtio_blk = {{"virtio_blk", 0, & __this_module, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}, (struct virtio_device_id const *)(& id_table), (unsigned int const *)(& features), 9U, & virtblk_probe, & virtblk_remove, 0}; [L4202] struct virtio_device_id const __mod_virtio_device_table ; [L4207] int LDV_IN_INTERRUPT ; [L4348] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4210] struct block_device *var_group1 ; [L4211] fmode_t var_virtblk_ioctl_5_p1 ; [L4212] unsigned int var_virtblk_ioctl_5_p2 ; [L4213] unsigned long var_virtblk_ioctl_5_p3 ; [L4214] struct hd_geometry *var_group2 ; [L4215] int tmp ; [L4216] int tmp___0 ; [L4217] int tmp___1 ; [L4219] LDV_IN_INTERRUPT = 1 [L4220] FCALL ldv_initialize() [L4221] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4222] CALL, EXPR init() [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] RET, EXPR register_blkdev(0U, "virtblk") [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4190] CALL, EXPR register_virtio_driver(& virtio_blk) [L4535] return __VERIFIER_nondet_int(); [L4190] RET, EXPR register_virtio_driver(& virtio_blk) [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4222] RET, EXPR init() [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___1=2147483648, virtblk_fops={12:0}, virtio_blk={15:0}] [L4229] tmp___0 = __VERIFIER_nondet_int() [L4231] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=2147483648, virtblk_fops={12:0}, virtio_blk={15:0}] [L4232] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=2147483648, virtblk_fops={12:0}, virtio_blk={15:0}] [L4233] CALL virtblk_ioctl(var_group1, var_virtblk_ioctl_5_p1, var_virtblk_ioctl_5_p2, var_virtblk_ioctl_5_p3) [L3912] struct gendisk *disk ; [L3913] struct virtio_blk *vblk ; [L3914] void *usr_data ; [L3915] char id_str[20U] ; [L3916] int err ; [L3917] int tmp ; [L3918] bool tmp___0 ; [L3919] int tmp___1 ; [L3920] int tmp___2 ; [L3922] EXPR bdev->bd_disk [L3922] disk = bdev->bd_disk [L3923] EXPR disk->private_data [L3923] vblk = (struct virtio_blk *)disk->private_data [L3924] COND TRUE cmd == 1447184708U [L3925] usr_data = (void *)data [L3926] CALL, EXPR virtblk_get_id(disk, (char *)(& id_str)) [L3879] struct virtio_blk *vblk ; [L3880] struct request *req ; [L3881] struct bio *bio ; [L3882] long tmp ; [L3883] long tmp___0 ; [L3884] long tmp___1 ; [L3885] long tmp___2 ; [L3886] int tmp___3 ; [L3888] EXPR disk->private_data [L3888] vblk = (struct virtio_blk *)disk->private_data [L3889] EXPR vblk->disk [L3889] EXPR (vblk->disk)->queue [L3889] CALL, EXPR bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4427] CALL, EXPR ldv_malloc(sizeof(struct bio)) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [\old(size)=112, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, size=112, virtblk_fops={12:0}, virtio_blk={15:0}] [L4427] RET, EXPR ldv_malloc(sizeof(struct bio)) VAL [\old(arg2)=20, \old(arg3)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, arg0={0:0}, arg0={0:0}, arg1={22:0}, arg1={22:0}, arg2=20, arg3=208, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct bio))={0:0}, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] RET, EXPR bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L3890] CALL, EXPR IS_ERR((void const *)bio) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4274] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] CALL, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4307] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] RET, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3890] RET, EXPR IS_ERR((void const *)bio) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bio={0:0}, disk={16777216:0}, disk={16777216:0}, features={14:0}, id_str={22:0}, id_str={22:0}, id_table={13:0}, index=0, IS_ERR((void const *)bio)=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, vblk={0:262144}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L3896] CALL, EXPR ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L4286] CALL, EXPR blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4443] CALL, EXPR ldv_malloc(sizeof(struct request)) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [\old(size)=322, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, size=322, virtblk_fops={12:0}, virtio_blk={15:0}] [L4443] RET, EXPR ldv_malloc(sizeof(struct request)) VAL [\old(arg2)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, arg0={0:0}, arg0={0:0}, arg1={0:0}, arg1={0:0}, arg2=208, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct request))={0:0}, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] RET, EXPR blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4288] CALL ldv_get_blk_rq(ldv_func_res, ldv_func_arg3) [L4351] long tmp ; VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [\old(mask)=208, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mask=208, res={0:0}, res={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4288] RET ldv_get_blk_rq(ldv_func_res, ldv_func_arg3) [L4289] return (ldv_func_res); VAL [\old(ldv_func_arg3)=208, \result={0:0}, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, ldv_func_arg1={0:0}, ldv_func_arg1={0:0}, ldv_func_arg2={0:0}, ldv_func_arg2={0:0}, ldv_func_arg3=208, ldv_func_res={0:0}, LDV_IN_INTERRUPT=1, major=0, tmp={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3896] RET, EXPR ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L3897] CALL, EXPR IS_ERR((void const *)req) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4274] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] CALL, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4307] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] RET, EXPR ldv_is_err(ptr) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, major=0, ptr={0:0}, ptr={0:0}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [\result=0, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, ptr={0:0}, ptr={0:0}, tmp=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L3897] RET, EXPR IS_ERR((void const *)req) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bio={0:0}, disk={16777216:0}, disk={16777216:0}, features={14:0}, id_str={22:0}, id_str={22:0}, id_table={13:0}, index=0, IS_ERR((void const *)req)=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, req={0:0}, tmp___0=0, vblk={0:262144}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3897] tmp___2 = IS_ERR((void const *)req) [L3898] COND FALSE !(tmp___2 != 0L) [L3904] req->cmd_type = 7 [L3905] EXPR vblk->disk [L3905] EXPR (vblk->disk)->queue [L3905] EXPR vblk->disk [L3905] CALL, EXPR blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L4437] return __VERIFIER_nondet_int(); [L3905] RET, EXPR blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [\result=-2147483648, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bio={0:0}, disk={16777216:0}, disk={16777216:0}, features={14:0}, id_str={22:0}, id_str={22:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, req={0:0}, tmp___0=0, tmp___2=0, tmp___3=2147483648, vblk={0:262144}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3926] RET, EXPR virtblk_get_id(disk, (char *)(& id_str)) [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [\old(cmd)=1447184708, \old(data)=37, \old(mode)=11, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bdev={0:0}, bdev={0:0}, cmd=1447184708, data=37, disk={16777216:0}, err=2147483648, features={14:0}, id_str={22:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=11, usr_data={0:37}, vblk={0:262144}, virtblk_fops={12:0}, virtio_blk={15:0}] [L3935] return (err); [L3935] return (err); VAL [\old(cmd)=1447184708, \old(data)=37, \old(mode)=11, \result=-2147483648, __mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, bdev={0:0}, bdev={0:0}, cmd=1447184708, data=37, disk={16777216:0}, err=2147483648, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, mode=11, usr_data={0:37}, vblk={0:262144}, virtblk_fops={12:0}, virtio_blk={15:0}] [L4233] RET virtblk_ioctl(var_group1, var_virtblk_ioctl_5_p1, var_virtblk_ioctl_5_p2, var_virtblk_ioctl_5_p3) [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=0, var_group1={0:0}, var_virtblk_ioctl_5_p1=11, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=37, virtblk_fops={12:0}, virtio_blk={15:0}] [L4249] FCALL ldv_handler_precall() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, tmp=0, tmp___0=0, tmp___1=0, var_group1={0:0}, var_virtblk_ioctl_5_p1=11, var_virtblk_ioctl_5_p2=1447184708, var_virtblk_ioctl_5_p3=37, virtblk_fops={12:0}, virtio_blk={15:0}] [L4250] CALL fini() [L4197] FCALL unregister_blkdev((unsigned int )major, "virtblk") [L4198] FCALL unregister_virtio_driver(& virtio_blk) [L4250] RET fini() [L4252] CALL ldv_check_final_state() [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4387] CALL ldv_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={14:0}, id_table={13:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={12:0}, virtio_blk={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 748 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 419 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 329 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 3 NumberOfNonLiveVariables, 645 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 20/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-16 03:41:35,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample