./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN --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 14116a47f3f4a2a033e7a89d50301476fe518641457365dd95d98c606e6851b5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:33:32,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:33:32,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:33:32,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:33:32,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:33:32,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:33:32,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:33:32,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:33:32,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:33:32,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:33:32,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:33:32,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:33:32,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:33:32,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:33:32,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:33:32,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:33:32,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:33:32,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:33:32,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:33:32,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:33:32,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:33:32,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:33:32,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:33:32,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:33:32,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:33:32,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:33:32,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:33:32,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:33:32,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:33:32,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:33:32,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:33:32,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:33:32,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:33:32,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:33:32,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:33:32,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:33:32,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:33:32,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:33:32,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:33:32,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:33:32,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:33:32,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:33:32,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:33:32,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:33:32,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:33:32,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:33:32,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:33:32,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:33:32,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:33:32,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:33:32,728 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:33:32,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:33:32,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:33:32,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:33:32,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:33:32,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:33:32,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:33:32,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:33:32,732 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:33:32,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:33:32,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:33:32,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:33:32,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:33:32,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:32,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:33:32,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:33:32,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:33:32,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:33:32,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:33:32,735 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:33:32,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:33:32,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:33:32,736 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14116a47f3f4a2a033e7a89d50301476fe518641457365dd95d98c606e6851b5 [2022-11-20 10:33:33,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:33:33,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:33:33,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:33:33,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:33:33,141 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:33:33,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2022-11-20 10:33:36,562 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:37,512 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:37,513 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2022-11-20 10:33:37,573 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/data/2d6a149a8/c27a701e53d94baca182adc6d7a85ae0/FLAG9d6460809 [2022-11-20 10:33:37,589 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/data/2d6a149a8/c27a701e53d94baca182adc6d7a85ae0 [2022-11-20 10:33:37,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:37,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:37,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:37,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:37,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:37,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:37" (1/1) ... [2022-11-20 10:33:37,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af0bc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:37, skipping insertion in model container [2022-11-20 10:33:37,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:37" (1/1) ... [2022-11-20 10:33:37,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:37,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:38,669 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1638) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 10:33:38,680 INFO L158 Benchmark]: Toolchain (without parser) took 1085.19ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 95.3MB in the beginning and 100.1MB in the end (delta: -4.8MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2022-11-20 10:33:38,681 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 146.8MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:33:38,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1082.63ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 94.9MB in the beginning and 100.1MB in the end (delta: -5.3MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2022-11-20 10:33:38,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 146.8MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1082.63ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 94.9MB in the beginning and 100.1MB in the end (delta: -5.3MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN --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 14116a47f3f4a2a033e7a89d50301476fe518641457365dd95d98c606e6851b5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:33:41,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:33:41,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:33:41,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:33:41,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:33:41,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:33:41,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:33:41,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:33:41,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:33:41,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:33:41,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:33:41,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:33:41,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:33:41,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:33:41,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:33:41,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:33:41,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:33:41,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:33:41,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:33:41,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:33:41,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:33:41,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:33:41,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:33:41,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:33:41,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:33:41,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:33:41,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:33:41,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:33:41,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:33:41,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:33:41,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:33:41,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:33:41,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:33:41,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:33:41,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:33:41,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:33:41,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:33:41,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:33:41,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:33:41,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:33:41,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:33:41,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:33:41,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:33:41,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:33:41,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:33:41,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:33:41,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:33:41,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:33:41,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:33:41,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:33:41,544 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:33:41,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:33:41,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:33:41,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:33:41,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:33:41,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:33:41,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:33:41,547 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:33:41,547 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:33:41,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:33:41,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:33:41,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:33:41,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:33:41,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:33:41,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:33:41,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:41,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:33:41,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:33:41,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:33:41,550 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:33:41,550 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:33:41,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:33:41,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:33:41,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:33:41,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:33:41,551 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14116a47f3f4a2a033e7a89d50301476fe518641457365dd95d98c606e6851b5 [2022-11-20 10:33:41,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:33:42,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:33:42,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:33:42,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:33:42,011 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:33:42,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2022-11-20 10:33:45,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:46,281 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:46,281 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2022-11-20 10:33:46,389 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/data/d6d1af4c9/f997402894104908888fce7759058d2c/FLAG7f433377a [2022-11-20 10:33:46,419 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/data/d6d1af4c9/f997402894104908888fce7759058d2c [2022-11-20 10:33:46,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:46,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:46,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:46,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:46,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:46,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:46" (1/1) ... [2022-11-20 10:33:46,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a07e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:46, skipping insertion in model container [2022-11-20 10:33:46,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:46" (1/1) ... [2022-11-20 10:33:46,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:46,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:52,109 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485804,485817] [2022-11-20 10:33:52,114 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485973,485986] [2022-11-20 10:33:52,115 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486140,486153] [2022-11-20 10:33:52,116 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486308,486321] [2022-11-20 10:33:52,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:52,224 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:33:52,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:52,860 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485804,485817] [2022-11-20 10:33:52,861 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485973,485986] [2022-11-20 10:33:52,861 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486140,486153] [2022-11-20 10:33:52,862 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486308,486321] [2022-11-20 10:33:52,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:52,979 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:33:53,742 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485804,485817] [2022-11-20 10:33:53,743 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[485973,485986] [2022-11-20 10:33:53,744 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486140,486153] [2022-11-20 10:33:53,744 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[486308,486321] [2022-11-20 10:33:53,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:54,263 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:33:54,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54 WrapperNode [2022-11-20 10:33:54,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:54,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:54,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:33:54,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:33:54,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:54,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:54,866 INFO L138 Inliner]: procedures = 656, calls = 3547, calls flagged for inlining = 319, calls inlined = 283, statements flattened = 7808 [2022-11-20 10:33:54,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:54,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:33:54,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:33:54,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:33:54,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:54,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:54,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:54,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:55,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:55,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:55,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:55,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:55,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:33:55,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:33:55,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:33:55,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:33:55,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (1/1) ... [2022-11-20 10:33:55,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:55,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:55,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:33:55,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:33:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-20 10:33:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-20 10:33:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 10:33:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 10:33:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 10:33:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 10:33:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-20 10:33:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-20 10:33:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 10:33:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 10:33:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:33:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:33:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-20 10:33:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-20 10:33:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_function_pointers_vf [2022-11-20 10:33:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_function_pointers_vf [2022-11-20 10:33:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-20 10:33:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-20 10:33:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-20 10:33:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-20 10:33:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 10:33:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 10:33:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 10:33:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 10:33:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_alloc_rx_buffers [2022-11-20 10:33:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_alloc_rx_buffers [2022-11-20 10:33:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-20 10:33:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-20 10:33:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_mac_addr_vf [2022-11-20 10:33:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_mac_addr_vf [2022-11-20 10:33:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_close [2022-11-20 10:33:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_close [2022-11-20 10:33:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 10:33:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 10:33:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2022-11-20 10:33:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2022-11-20 10:33:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_maybe_stop_tx [2022-11-20 10:33:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_maybe_stop_tx [2022-11-20 10:33:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 10:33:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 10:33:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 10:33:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 10:33:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 10:33:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 10:33:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-20 10:33:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-20 10:33:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_irq [2022-11-20 10:33:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_irq [2022-11-20 10:33:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 10:33:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 10:33:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-20 10:33:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-20 10:33:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_suspend [2022-11-20 10:33:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_suspend [2022-11-20 10:33:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:33:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-20 10:33:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-20 10:33:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:33:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:33:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 10:33:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-20 10:33:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-20 10:33:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-20 10:33:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-20 10:33:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-20 10:33:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-20 10:33:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 10:33:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 10:33:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_assign_vector [2022-11-20 10:33:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_assign_vector [2022-11-20 10:33:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 10:33:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 10:33:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 10:33:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 10:33:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_desc_unused [2022-11-20 10:33:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_desc_unused [2022-11-20 10:33:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 10:33:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 10:33:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-20 10:33:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-20 10:33:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_netpoll [2022-11-20 10:33:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_netpoll [2022-11-20 10:33:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 10:33:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 10:33:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset_interrupt_capability [2022-11-20 10:33:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset_interrupt_capability [2022-11-20 10:33:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-20 10:33:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-20 10:33:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 10:33:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 10:33:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_msg_vf [2022-11-20 10:33:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_msg_vf [2022-11-20 10:33:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-20 10:33:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-20 10:33:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-20 10:33:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-20 10:33:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_igbvf_exit_module_19_2 [2022-11-20 10:33:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_igbvf_exit_module_19_2 [2022-11-20 10:33:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 10:33:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 10:33:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_tx_resources [2022-11-20 10:33:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_tx_resources [2022-11-20 10:33:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-20 10:33:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-20 10:33:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 10:33:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 10:33:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-20 10:33:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-20 10:33:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 10:33:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 10:33:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-20 10:33:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-20 10:33:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-20 10:33:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-20 10:33:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:33:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:33:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:33:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 10:33:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 10:33:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 10:33:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 10:33:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-20 10:33:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-20 10:33:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-20 10:33:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-20 10:33:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure_msix [2022-11-20 10:33:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure_msix [2022-11-20 10:33:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:33:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_open [2022-11-20 10:33:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_open [2022-11-20 10:33:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-20 10:33:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-20 10:33:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 10:33:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 10:33:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:33:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 10:33:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 10:33:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:33:55,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:33:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 10:33:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-20 10:33:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-20 10:33:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_nway_reset [2022-11-20 10:33:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_nway_reset [2022-11-20 10:33:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset [2022-11-20 10:33:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset [2022-11-20 10:33:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2022-11-20 10:33:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2022-11-20 10:33:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2022-11-20 10:33:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2022-11-20 10:33:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-20 10:33:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-20 10:33:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-11-20 10:33:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-11-20 10:33:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_enable [2022-11-20 10:33:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_enable [2022-11-20 10:33:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-20 10:33:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-20 10:33:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-20 10:33:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-20 10:33:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reinit_locked [2022-11-20 10:33:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reinit_locked [2022-11-20 10:33:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 10:33:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 10:33:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 10:33:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 10:33:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_update_stats [2022-11-20 10:33:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_update_stats [2022-11-20 10:33:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_vlan_rx_add_vid [2022-11-20 10:33:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_vlan_rx_add_vid [2022-11-20 10:33:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 10:33:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 10:33:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-20 10:33:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-20 10:33:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_bit_vf [2022-11-20 10:33:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_bit_vf [2022-11-20 10:33:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 10:33:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2022-11-20 10:33:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2022-11-20 10:33:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:33:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:33:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-20 10:33:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-20 10:33:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2022-11-20 10:33:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2022-11-20 10:33:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:33:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 10:33:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 10:33:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:33:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:33:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:33:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 10:33:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:33:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:33:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:33:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2022-11-20 10:33:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2022-11-20 10:33:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-20 10:33:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-20 10:33:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-20 10:33:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-20 10:33:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-20 10:33:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-20 10:33:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_down [2022-11-20 10:33:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_down [2022-11-20 10:33:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-20 10:33:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-20 10:33:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_regs_len [2022-11-20 10:33:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_regs_len [2022-11-20 10:33:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_irq [2022-11-20 10:33:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_irq [2022-11-20 10:33:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-20 10:33:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-20 10:33:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-20 10:33:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-20 10:33:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2022-11-20 10:33:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2022-11-20 10:33:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 10:33:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 10:33:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 10:33:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 10:33:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 10:33:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 10:33:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_ring [2022-11-20 10:33:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_ring [2022-11-20 10:33:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_v2p_mailbox [2022-11-20 10:33:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_v2p_mailbox [2022-11-20 10:33:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-20 10:33:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-20 10:33:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-20 10:33:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-20 10:33:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 10:33:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 10:33:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:33:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 10:33:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 10:33:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_remove [2022-11-20 10:33:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_remove [2022-11-20 10:33:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-20 10:33:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-20 10:33:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 10:33:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 10:33:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_disable [2022-11-20 10:33:55,647 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_disable [2022-11-20 10:33:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:33:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure [2022-11-20 10:33:55,647 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure [2022-11-20 10:33:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_rx_resources [2022-11-20 10:33:55,647 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_rx_resources [2022-11-20 10:33:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_rx_ring [2022-11-20 10:33:55,647 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_rx_ring [2022-11-20 10:33:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-20 10:33:55,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-20 10:33:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:33:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_obtain_mbx_lock_vf [2022-11-20 10:33:55,648 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_obtain_mbx_lock_vf [2022-11-20 10:33:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:33:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-20 10:33:55,649 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-20 10:33:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 10:33:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:33:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:33:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_ack_vf [2022-11-20 10:33:55,649 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_ack_vf [2022-11-20 10:33:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 10:33:55,650 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 10:33:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-20 10:33:55,650 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-20 10:33:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 10:33:55,650 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 10:33:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-20 10:33:55,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-20 10:33:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_request_irq [2022-11-20 10:33:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_request_irq [2022-11-20 10:33:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_resume [2022-11-20 10:33:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_resume [2022-11-20 10:33:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 10:33:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 10:33:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-20 10:33:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-20 10:33:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 10:33:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 10:33:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_put_txbuf [2022-11-20 10:33:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_put_txbuf [2022-11-20 10:33:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-20 10:33:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-20 10:33:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2022-11-20 10:33:55,653 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2022-11-20 10:33:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-20 10:33:55,653 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-20 10:33:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 10:33:55,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 10:33:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 10:33:55,653 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 10:33:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-20 10:33:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-20 10:33:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_shutdown [2022-11-20 10:33:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_shutdown [2022-11-20 10:33:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 10:33:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 10:33:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-20 10:33:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-20 10:33:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_tx_resources [2022-11-20 10:33:55,655 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_tx_resources [2022-11-20 10:33:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 10:33:55,655 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 10:33:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_eeprom_len [2022-11-20 10:33:55,655 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_eeprom_len [2022-11-20 10:33:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 10:33:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 10:33:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 10:33:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 10:33:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2022-11-20 10:33:55,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2022-11-20 10:33:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:33:55,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:33:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-20 10:33:55,657 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-20 10:33:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 10:33:55,657 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 10:33:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-20 10:33:55,660 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-20 10:33:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-20 10:33:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-20 10:33:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_resume [2022-11-20 10:33:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_resume [2022-11-20 10:33:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_rx_resources [2022-11-20 10:33:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_rx_resources [2022-11-20 10:33:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_6 [2022-11-20 10:33:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_6 [2022-11-20 10:33:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_multi [2022-11-20 10:33:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_multi [2022-11-20 10:33:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 10:33:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 10:33:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_tx_timeout [2022-11-20 10:33:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_tx_timeout [2022-11-20 10:33:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-20 10:33:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-20 10:33:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2022-11-20 10:33:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2022-11-20 10:33:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-20 10:33:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-20 10:33:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-20 10:33:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-20 10:33:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_up [2022-11-20 10:33:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_up [2022-11-20 10:33:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-20 10:33:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-20 10:33:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-20 10:33:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-20 10:33:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 10:33:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 10:33:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-20 10:33:57,396 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:33:57,402 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:33:58,887 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:35:19,660 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 10:35:20,291 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:35:20,318 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:35:20,318 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:35:20,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:20 BoogieIcfgContainer [2022-11-20 10:35:20,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:35:20,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:35:20,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:35:20,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:35:20,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:46" (1/3) ... [2022-11-20 10:35:20,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104dfbfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:20, skipping insertion in model container [2022-11-20 10:35:20,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:54" (2/3) ... [2022-11-20 10:35:20,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104dfbfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:20, skipping insertion in model container [2022-11-20 10:35:20,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:20" (3/3) ... [2022-11-20 10:35:20,333 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2022-11-20 10:35:20,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:35:20,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:35:20,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:35:20,484 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10d1c497, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:35:20,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:35:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 2935 states, 2001 states have (on average 1.255872063968016) internal successors, (2513), 2042 states have internal predecessors, (2513), 773 states have call successors, (773), 161 states have call predecessors, (773), 160 states have return successors, (765), 751 states have call predecessors, (765), 765 states have call successors, (765) [2022-11-20 10:35:20,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-20 10:35:20,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:20,545 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:20,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:20,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1076541266, now seen corresponding path program 1 times [2022-11-20 10:35:20,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:20,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12290261] [2022-11-20 10:35:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:20,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:20,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:20,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:20,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 10:35:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:23,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 2142 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:35:23,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2022-11-20 10:35:24,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:24,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:24,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12290261] [2022-11-20 10:35:24,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12290261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:24,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:24,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:24,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187552131] [2022-11-20 10:35:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:24,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:24,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:24,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:24,210 INFO L87 Difference]: Start difference. First operand has 2935 states, 2001 states have (on average 1.255872063968016) internal successors, (2513), 2042 states have internal predecessors, (2513), 773 states have call successors, (773), 161 states have call predecessors, (773), 160 states have return successors, (765), 751 states have call predecessors, (765), 765 states have call successors, (765) Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 10:35:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:25,116 INFO L93 Difference]: Finished difference Result 8603 states and 12011 transitions. [2022-11-20 10:35:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:25,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 292 [2022-11-20 10:35:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:25,197 INFO L225 Difference]: With dead ends: 8603 [2022-11-20 10:35:25,198 INFO L226 Difference]: Without dead ends: 5707 [2022-11-20 10:35:25,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:25,239 INFO L413 NwaCegarLoop]: 4756 mSDtfsCounter, 3856 mSDsluCounter, 3983 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3856 SdHoareTripleChecker+Valid, 8739 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:25,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3856 Valid, 8739 Invalid, 34 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:35:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-11-20 10:35:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5707. [2022-11-20 10:35:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5707 states, 3918 states have (on average 1.2503828483920367) internal successors, (4899), 3997 states have internal predecessors, (4899), 1472 states have call successors, (1472), 317 states have call predecessors, (1472), 316 states have return successors, (1468), 1440 states have call predecessors, (1468), 1468 states have call successors, (1468) [2022-11-20 10:35:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5707 states to 5707 states and 7839 transitions. [2022-11-20 10:35:25,824 INFO L78 Accepts]: Start accepts. Automaton has 5707 states and 7839 transitions. Word has length 292 [2022-11-20 10:35:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:25,830 INFO L495 AbstractCegarLoop]: Abstraction has 5707 states and 7839 transitions. [2022-11-20 10:35:25,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 10:35:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5707 states and 7839 transitions. [2022-11-20 10:35:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-20 10:35:25,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:25,865 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:25,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 10:35:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:26,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1552788144, now seen corresponding path program 1 times [2022-11-20 10:35:26,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:26,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025029743] [2022-11-20 10:35:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:26,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:26,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:26,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:26,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 10:35:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:29,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:35:29,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2824 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 2721 trivial. 0 not checked. [2022-11-20 10:35:29,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:29,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:29,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025029743] [2022-11-20 10:35:29,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025029743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:29,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:29,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:29,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649319996] [2022-11-20 10:35:29,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:29,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:29,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:29,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:29,392 INFO L87 Difference]: Start difference. First operand 5707 states and 7839 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 10:35:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:30,234 INFO L93 Difference]: Finished difference Result 11372 states and 15615 transitions. [2022-11-20 10:35:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:30,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 348 [2022-11-20 10:35:30,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:30,326 INFO L225 Difference]: With dead ends: 11372 [2022-11-20 10:35:30,326 INFO L226 Difference]: Without dead ends: 8495 [2022-11-20 10:35:30,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:30,348 INFO L413 NwaCegarLoop]: 7831 mSDtfsCounter, 3816 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3816 SdHoareTripleChecker+Valid, 11819 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:30,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3816 Valid, 11819 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:35:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8495 states. [2022-11-20 10:35:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8495 to 8495. [2022-11-20 10:35:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8495 states, 5842 states have (on average 1.2509414584046559) internal successors, (7308), 5959 states have internal predecessors, (7308), 2179 states have call successors, (2179), 474 states have call predecessors, (2179), 473 states have return successors, (2175), 2133 states have call predecessors, (2175), 2175 states have call successors, (2175) [2022-11-20 10:35:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8495 states to 8495 states and 11662 transitions. [2022-11-20 10:35:30,954 INFO L78 Accepts]: Start accepts. Automaton has 8495 states and 11662 transitions. Word has length 348 [2022-11-20 10:35:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:30,955 INFO L495 AbstractCegarLoop]: Abstraction has 8495 states and 11662 transitions. [2022-11-20 10:35:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 10:35:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8495 states and 11662 transitions. [2022-11-20 10:35:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-20 10:35:30,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:30,971 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:31,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:31,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:31,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:31,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:31,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1412239534, now seen corresponding path program 1 times [2022-11-20 10:35:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:31,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259567676] [2022-11-20 10:35:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:31,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:31,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:31,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:31,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 10:35:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:34,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:34,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2824 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2022-11-20 10:35:36,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:36,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:36,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259567676] [2022-11-20 10:35:36,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259567676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:36,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:36,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:35:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67805888] [2022-11-20 10:35:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:36,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:35:36,873 INFO L87 Difference]: Start difference. First operand 8495 states and 11662 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2022-11-20 10:35:37,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:37,613 INFO L93 Difference]: Finished difference Result 8501 states and 11667 transitions. [2022-11-20 10:35:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:35:37,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 348 [2022-11-20 10:35:37,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:37,678 INFO L225 Difference]: With dead ends: 8501 [2022-11-20 10:35:37,679 INFO L226 Difference]: Without dead ends: 8499 [2022-11-20 10:35:37,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:37,692 INFO L413 NwaCegarLoop]: 4012 mSDtfsCounter, 3889 mSDsluCounter, 8010 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3890 SdHoareTripleChecker+Valid, 12022 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:37,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3890 Valid, 12022 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:35:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2022-11-20 10:35:38,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 8499. [2022-11-20 10:35:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8499 states, 5845 states have (on average 1.2508126603934988) internal successors, (7311), 5962 states have internal predecessors, (7311), 2179 states have call successors, (2179), 475 states have call predecessors, (2179), 474 states have return successors, (2175), 2133 states have call predecessors, (2175), 2175 states have call successors, (2175) [2022-11-20 10:35:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8499 states to 8499 states and 11665 transitions. [2022-11-20 10:35:38,439 INFO L78 Accepts]: Start accepts. Automaton has 8499 states and 11665 transitions. Word has length 348 [2022-11-20 10:35:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:38,445 INFO L495 AbstractCegarLoop]: Abstraction has 8499 states and 11665 transitions. [2022-11-20 10:35:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2022-11-20 10:35:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8499 states and 11665 transitions. [2022-11-20 10:35:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-20 10:35:38,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:38,464 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:38,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:38,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:38,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1972376137, now seen corresponding path program 1 times [2022-11-20 10:35:38,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:38,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973661081] [2022-11-20 10:35:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:38,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:38,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:38,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:38,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 10:35:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:41,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:41,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2826 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2022-11-20 10:35:44,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2826 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2022-11-20 10:35:45,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:45,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973661081] [2022-11-20 10:35:45,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973661081] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:45,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:45,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:45,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390269861] [2022-11-20 10:35:45,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:45,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:45,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:45,347 INFO L87 Difference]: Start difference. First operand 8499 states and 11665 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 10:35:46,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:46,381 INFO L93 Difference]: Finished difference Result 8505 states and 11670 transitions. [2022-11-20 10:35:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:46,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 353 [2022-11-20 10:35:46,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:46,454 INFO L225 Difference]: With dead ends: 8505 [2022-11-20 10:35:46,455 INFO L226 Difference]: Without dead ends: 8503 [2022-11-20 10:35:46,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:35:46,463 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3932 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:46,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3932 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:35:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8503 states. [2022-11-20 10:35:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8503 to 8503. [2022-11-20 10:35:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 5848 states have (on average 1.2506839945280437) internal successors, (7314), 5965 states have internal predecessors, (7314), 2179 states have call successors, (2179), 476 states have call predecessors, (2179), 475 states have return successors, (2175), 2133 states have call predecessors, (2175), 2175 states have call successors, (2175) [2022-11-20 10:35:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 11668 transitions. [2022-11-20 10:35:47,705 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 11668 transitions. Word has length 353 [2022-11-20 10:35:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:47,706 INFO L495 AbstractCegarLoop]: Abstraction has 8503 states and 11668 transitions. [2022-11-20 10:35:47,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 10:35:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 11668 transitions. [2022-11-20 10:35:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-20 10:35:47,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:47,727 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:47,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:47,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:47,942 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:47,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2001191374, now seen corresponding path program 1 times [2022-11-20 10:35:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:47,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106171790] [2022-11-20 10:35:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:47,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:47,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:47,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:47,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 10:35:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:50,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:50,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2832 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2828 trivial. 0 not checked. [2022-11-20 10:35:53,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2832 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2828 trivial. 0 not checked. [2022-11-20 10:35:54,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:54,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106171790] [2022-11-20 10:35:54,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106171790] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:54,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:54,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442776243] [2022-11-20 10:35:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:54,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:54,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:54,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:54,690 INFO L87 Difference]: Start difference. First operand 8503 states and 11668 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 10:35:55,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:55,771 INFO L93 Difference]: Finished difference Result 8509 states and 11673 transitions. [2022-11-20 10:35:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:55,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 358 [2022-11-20 10:35:55,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:55,817 INFO L225 Difference]: With dead ends: 8509 [2022-11-20 10:35:55,817 INFO L226 Difference]: Without dead ends: 8507 [2022-11-20 10:35:55,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:35:55,823 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3931 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:55,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3931 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:35:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8507 states. [2022-11-20 10:35:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8507 to 8507. [2022-11-20 10:35:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8507 states, 5851 states have (on average 1.2505554606050249) internal successors, (7317), 5968 states have internal predecessors, (7317), 2179 states have call successors, (2179), 477 states have call predecessors, (2179), 476 states have return successors, (2175), 2133 states have call predecessors, (2175), 2175 states have call successors, (2175) [2022-11-20 10:35:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 11671 transitions. [2022-11-20 10:35:56,743 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 11671 transitions. Word has length 358 [2022-11-20 10:35:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:56,745 INFO L495 AbstractCegarLoop]: Abstraction has 8507 states and 11671 transitions. [2022-11-20 10:35:56,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 10:35:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 11671 transitions. [2022-11-20 10:35:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-11-20 10:35:56,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:56,766 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:56,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:56,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:56,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:56,982 INFO L85 PathProgramCache]: Analyzing trace with hash -361319550, now seen corresponding path program 1 times [2022-11-20 10:35:56,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:56,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589310671] [2022-11-20 10:35:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:56,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:56,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:56,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:56,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 10:35:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:59,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:35:59,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2854 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 2743 trivial. 0 not checked. [2022-11-20 10:35:59,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:59,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:59,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589310671] [2022-11-20 10:35:59,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589310671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:59,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:59,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950871083] [2022-11-20 10:35:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:59,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:59,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:59,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:59,770 INFO L87 Difference]: Start difference. First operand 8507 states and 11671 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-20 10:36:00,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:00,916 INFO L93 Difference]: Finished difference Result 17005 states and 23322 transitions. [2022-11-20 10:36:00,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:00,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 375 [2022-11-20 10:36:00,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:00,982 INFO L225 Difference]: With dead ends: 17005 [2022-11-20 10:36:00,983 INFO L226 Difference]: Without dead ends: 11328 [2022-11-20 10:36:01,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:01,019 INFO L413 NwaCegarLoop]: 7845 mSDtfsCounter, 3850 mSDsluCounter, 3990 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3850 SdHoareTripleChecker+Valid, 11835 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:01,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3850 Valid, 11835 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:36:01,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11328 states. [2022-11-20 10:36:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11328 to 11296. [2022-11-20 10:36:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11296 states, 7776 states have (on average 1.2509002057613168) internal successors, (9727), 7931 states have internal predecessors, (9727), 2886 states have call successors, (2886), 634 states have call predecessors, (2886), 633 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:36:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11296 states to 11296 states and 15495 transitions. [2022-11-20 10:36:02,300 INFO L78 Accepts]: Start accepts. Automaton has 11296 states and 15495 transitions. Word has length 375 [2022-11-20 10:36:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:02,301 INFO L495 AbstractCegarLoop]: Abstraction has 11296 states and 15495 transitions. [2022-11-20 10:36:02,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-20 10:36:02,302 INFO L276 IsEmpty]: Start isEmpty. Operand 11296 states and 15495 transitions. [2022-11-20 10:36:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-20 10:36:02,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:02,320 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:02,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:02,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:02,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1927079337, now seen corresponding path program 1 times [2022-11-20 10:36:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:02,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129393923] [2022-11-20 10:36:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:02,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:02,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 10:36:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:05,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:05,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2842 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2836 trivial. 0 not checked. [2022-11-20 10:36:07,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2842 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2836 trivial. 0 not checked. [2022-11-20 10:36:08,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129393923] [2022-11-20 10:36:08,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129393923] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:08,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:08,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:36:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560203608] [2022-11-20 10:36:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:08,995 INFO L87 Difference]: Start difference. First operand 11296 states and 15495 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 10:36:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:09,953 INFO L93 Difference]: Finished difference Result 11302 states and 15500 transitions. [2022-11-20 10:36:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:09,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 363 [2022-11-20 10:36:09,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:10,006 INFO L225 Difference]: With dead ends: 11302 [2022-11-20 10:36:10,006 INFO L226 Difference]: Without dead ends: 11300 [2022-11-20 10:36:10,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:36:10,013 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3930 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:10,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3930 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11300 states. [2022-11-20 10:36:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 11300. [2022-11-20 10:36:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11300 states, 7779 states have (on average 1.2508034451729013) internal successors, (9730), 7934 states have internal predecessors, (9730), 2886 states have call successors, (2886), 635 states have call predecessors, (2886), 634 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:36:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11300 states to 11300 states and 15498 transitions. [2022-11-20 10:36:11,522 INFO L78 Accepts]: Start accepts. Automaton has 11300 states and 15498 transitions. Word has length 363 [2022-11-20 10:36:11,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:11,523 INFO L495 AbstractCegarLoop]: Abstraction has 11300 states and 15498 transitions. [2022-11-20 10:36:11,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 10:36:11,524 INFO L276 IsEmpty]: Start isEmpty. Operand 11300 states and 15498 transitions. [2022-11-20 10:36:11,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-20 10:36:11,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:11,542 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:11,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:11,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:11,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1684153618, now seen corresponding path program 1 times [2022-11-20 10:36:11,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:11,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407515312] [2022-11-20 10:36:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:11,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:11,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:11,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:11,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 10:36:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:14,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2856 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2848 trivial. 0 not checked. [2022-11-20 10:36:16,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2856 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2848 trivial. 0 not checked. [2022-11-20 10:36:17,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:17,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407515312] [2022-11-20 10:36:17,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407515312] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:17,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:17,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:36:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033587398] [2022-11-20 10:36:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:17,815 INFO L87 Difference]: Start difference. First operand 11300 states and 15498 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 10:36:18,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:18,819 INFO L93 Difference]: Finished difference Result 11306 states and 15503 transitions. [2022-11-20 10:36:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:18,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 368 [2022-11-20 10:36:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:18,871 INFO L225 Difference]: With dead ends: 11306 [2022-11-20 10:36:18,871 INFO L226 Difference]: Without dead ends: 11304 [2022-11-20 10:36:18,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:36:18,879 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:18,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3929 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11304 states. [2022-11-20 10:36:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11304 to 11304. [2022-11-20 10:36:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11304 states, 7782 states have (on average 1.2507067591878693) internal successors, (9733), 7937 states have internal predecessors, (9733), 2886 states have call successors, (2886), 636 states have call predecessors, (2886), 635 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:36:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 15501 transitions. [2022-11-20 10:36:20,348 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 15501 transitions. Word has length 368 [2022-11-20 10:36:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:20,349 INFO L495 AbstractCegarLoop]: Abstraction has 11304 states and 15501 transitions. [2022-11-20 10:36:20,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 10:36:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 15501 transitions. [2022-11-20 10:36:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-20 10:36:20,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:20,377 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 6, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:20,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:20,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:20,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1942966537, now seen corresponding path program 1 times [2022-11-20 10:36:20,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:20,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442842783] [2022-11-20 10:36:20,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:20,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:20,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:20,601 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:20,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 10:36:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:23,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:23,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2874 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2864 trivial. 0 not checked. [2022-11-20 10:36:25,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2874 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2864 trivial. 0 not checked. [2022-11-20 10:36:26,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:26,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442842783] [2022-11-20 10:36:26,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442842783] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:26,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:26,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:36:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168159671] [2022-11-20 10:36:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:26,945 INFO L87 Difference]: Start difference. First operand 11304 states and 15501 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 10:36:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:28,106 INFO L93 Difference]: Finished difference Result 11310 states and 15506 transitions. [2022-11-20 10:36:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:28,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 373 [2022-11-20 10:36:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:28,160 INFO L225 Difference]: With dead ends: 11310 [2022-11-20 10:36:28,160 INFO L226 Difference]: Without dead ends: 11308 [2022-11-20 10:36:28,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:36:28,168 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:28,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3928 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11308 states. [2022-11-20 10:36:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11308 to 11308. [2022-11-20 10:36:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11308 states, 7785 states have (on average 1.2506101477199743) internal successors, (9736), 7940 states have internal predecessors, (9736), 2886 states have call successors, (2886), 637 states have call predecessors, (2886), 636 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:36:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11308 states to 11308 states and 15504 transitions. [2022-11-20 10:36:29,489 INFO L78 Accepts]: Start accepts. Automaton has 11308 states and 15504 transitions. Word has length 373 [2022-11-20 10:36:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:29,490 INFO L495 AbstractCegarLoop]: Abstraction has 11308 states and 15504 transitions. [2022-11-20 10:36:29,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-20 10:36:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 11308 states and 15504 transitions. [2022-11-20 10:36:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-20 10:36:29,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:29,508 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 7, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:29,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:29,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:29,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:29,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:29,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1676846066, now seen corresponding path program 1 times [2022-11-20 10:36:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:29,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898978617] [2022-11-20 10:36:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:29,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:29,739 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:29,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 10:36:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:32,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:32,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2896 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2884 trivial. 0 not checked. [2022-11-20 10:36:35,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2896 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2884 trivial. 0 not checked. [2022-11-20 10:36:36,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:36,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898978617] [2022-11-20 10:36:36,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898978617] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:36,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:36,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:36:36,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775491400] [2022-11-20 10:36:36,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:36,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:36,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:36,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:36,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:36,702 INFO L87 Difference]: Start difference. First operand 11308 states and 15504 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 10:36:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:38,337 INFO L93 Difference]: Finished difference Result 11314 states and 15509 transitions. [2022-11-20 10:36:38,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:38,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 378 [2022-11-20 10:36:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:38,398 INFO L225 Difference]: With dead ends: 11314 [2022-11-20 10:36:38,398 INFO L226 Difference]: Without dead ends: 11312 [2022-11-20 10:36:38,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:36:38,407 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3927 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:38,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3927 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2022-11-20 10:36:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 11312. [2022-11-20 10:36:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11312 states, 7788 states have (on average 1.2505136106831023) internal successors, (9739), 7943 states have internal predecessors, (9739), 2886 states have call successors, (2886), 638 states have call predecessors, (2886), 637 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:36:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11312 states to 11312 states and 15507 transitions. [2022-11-20 10:36:39,816 INFO L78 Accepts]: Start accepts. Automaton has 11312 states and 15507 transitions. Word has length 378 [2022-11-20 10:36:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:39,817 INFO L495 AbstractCegarLoop]: Abstraction has 11312 states and 15507 transitions. [2022-11-20 10:36:39,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 10:36:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 11312 states and 15507 transitions. [2022-11-20 10:36:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-20 10:36:39,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:39,840 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 8, 7, 7, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:39,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:40,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:40,058 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:40,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1203153815, now seen corresponding path program 1 times [2022-11-20 10:36:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:40,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086817897] [2022-11-20 10:36:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:40,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:40,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:40,064 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:40,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 10:36:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:43,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:43,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2922 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2022-11-20 10:36:45,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2922 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2022-11-20 10:36:46,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:46,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086817897] [2022-11-20 10:36:46,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086817897] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:46,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:46,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:36:47,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972822230] [2022-11-20 10:36:47,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:47,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:47,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:47,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:47,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:47,002 INFO L87 Difference]: Start difference. First operand 11312 states and 15507 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 10:36:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:48,295 INFO L93 Difference]: Finished difference Result 11318 states and 15512 transitions. [2022-11-20 10:36:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:48,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 383 [2022-11-20 10:36:48,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:48,340 INFO L225 Difference]: With dead ends: 11318 [2022-11-20 10:36:48,340 INFO L226 Difference]: Without dead ends: 11316 [2022-11-20 10:36:48,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:36:48,345 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3926 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:48,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3926 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2022-11-20 10:36:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 11316. [2022-11-20 10:36:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11316 states, 7791 states have (on average 1.250417147991272) internal successors, (9742), 7946 states have internal predecessors, (9742), 2886 states have call successors, (2886), 639 states have call predecessors, (2886), 638 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:36:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11316 states to 11316 states and 15510 transitions. [2022-11-20 10:36:49,624 INFO L78 Accepts]: Start accepts. Automaton has 11316 states and 15510 transitions. Word has length 383 [2022-11-20 10:36:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:49,625 INFO L495 AbstractCegarLoop]: Abstraction has 11316 states and 15510 transitions. [2022-11-20 10:36:49,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-20 10:36:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 11316 states and 15510 transitions. [2022-11-20 10:36:49,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-20 10:36:49,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:49,648 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 9, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:49,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:49,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:49,862 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash 705411794, now seen corresponding path program 1 times [2022-11-20 10:36:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:49,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097526758] [2022-11-20 10:36:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:49,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:49,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:49,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:49,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 10:36:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:52,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:52,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2952 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2936 trivial. 0 not checked. [2022-11-20 10:36:55,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2952 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2936 trivial. 0 not checked. [2022-11-20 10:36:56,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:56,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097526758] [2022-11-20 10:36:56,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097526758] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:56,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:56,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:36:56,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556929607] [2022-11-20 10:36:56,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:56,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:56,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:56,670 INFO L87 Difference]: Start difference. First operand 11316 states and 15510 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-20 10:36:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:57,957 INFO L93 Difference]: Finished difference Result 11322 states and 15515 transitions. [2022-11-20 10:36:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 388 [2022-11-20 10:36:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:58,012 INFO L225 Difference]: With dead ends: 11322 [2022-11-20 10:36:58,013 INFO L226 Difference]: Without dead ends: 11320 [2022-11-20 10:36:58,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:36:58,023 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:58,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3925 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11320 states. [2022-11-20 10:36:59,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11320 to 11320. [2022-11-20 10:36:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11320 states, 7794 states have (on average 1.2503207595586348) internal successors, (9745), 7949 states have internal predecessors, (9745), 2886 states have call successors, (2886), 640 states have call predecessors, (2886), 639 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:36:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11320 states to 11320 states and 15513 transitions. [2022-11-20 10:36:59,697 INFO L78 Accepts]: Start accepts. Automaton has 11320 states and 15513 transitions. Word has length 388 [2022-11-20 10:36:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:59,698 INFO L495 AbstractCegarLoop]: Abstraction has 11320 states and 15513 transitions. [2022-11-20 10:36:59,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-20 10:36:59,698 INFO L276 IsEmpty]: Start isEmpty. Operand 11320 states and 15513 transitions. [2022-11-20 10:36:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-20 10:36:59,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:59,712 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 10, 9, 9, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:59,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:59,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:59,914 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:59,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1918046263, now seen corresponding path program 1 times [2022-11-20 10:36:59,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:59,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768881642] [2022-11-20 10:36:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:59,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:59,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:59,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:59,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 10:37:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:02,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:02,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2986 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2968 trivial. 0 not checked. [2022-11-20 10:37:05,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2986 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2968 trivial. 0 not checked. [2022-11-20 10:37:06,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:06,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768881642] [2022-11-20 10:37:06,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768881642] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:06,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:37:06,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:37:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026235126] [2022-11-20 10:37:06,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:06,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:06,511 INFO L87 Difference]: Start difference. First operand 11320 states and 15513 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-20 10:37:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:07,892 INFO L93 Difference]: Finished difference Result 11326 states and 15518 transitions. [2022-11-20 10:37:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:07,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 393 [2022-11-20 10:37:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:07,931 INFO L225 Difference]: With dead ends: 11326 [2022-11-20 10:37:07,931 INFO L226 Difference]: Without dead ends: 11324 [2022-11-20 10:37:07,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:37:07,940 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3924 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:07,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3924 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11324 states. [2022-11-20 10:37:09,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11324 to 11324. [2022-11-20 10:37:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11324 states, 7797 states have (on average 1.2502244452994742) internal successors, (9748), 7952 states have internal predecessors, (9748), 2886 states have call successors, (2886), 641 states have call predecessors, (2886), 640 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:37:09,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11324 states to 11324 states and 15516 transitions. [2022-11-20 10:37:09,393 INFO L78 Accepts]: Start accepts. Automaton has 11324 states and 15516 transitions. Word has length 393 [2022-11-20 10:37:09,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:09,394 INFO L495 AbstractCegarLoop]: Abstraction has 11324 states and 15516 transitions. [2022-11-20 10:37:09,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-20 10:37:09,394 INFO L276 IsEmpty]: Start isEmpty. Operand 11324 states and 15516 transitions. [2022-11-20 10:37:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-20 10:37:09,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:09,409 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 11, 10, 10, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:09,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-20 10:37:09,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:09,610 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash -154179150, now seen corresponding path program 1 times [2022-11-20 10:37:09,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:09,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863223108] [2022-11-20 10:37:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:09,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:09,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:09,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:37:09,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 10:37:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:12,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:12,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2022-11-20 10:37:15,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2022-11-20 10:37:16,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:16,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863223108] [2022-11-20 10:37:16,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863223108] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:16,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:37:16,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:37:16,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817363284] [2022-11-20 10:37:16,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:16,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:16,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:16,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:16,309 INFO L87 Difference]: Start difference. First operand 11324 states and 15516 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-20 10:37:17,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:17,855 INFO L93 Difference]: Finished difference Result 11330 states and 15521 transitions. [2022-11-20 10:37:17,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:17,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 398 [2022-11-20 10:37:17,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:17,911 INFO L225 Difference]: With dead ends: 11330 [2022-11-20 10:37:17,911 INFO L226 Difference]: Without dead ends: 11328 [2022-11-20 10:37:17,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:37:17,920 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3923 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:17,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3923 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:17,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11328 states. [2022-11-20 10:37:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11328 to 11328. [2022-11-20 10:37:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11328 states, 7800 states have (on average 1.2501282051282052) internal successors, (9751), 7955 states have internal predecessors, (9751), 2886 states have call successors, (2886), 642 states have call predecessors, (2886), 641 states have return successors, (2882), 2826 states have call predecessors, (2882), 2882 states have call successors, (2882) [2022-11-20 10:37:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11328 states to 11328 states and 15519 transitions. [2022-11-20 10:37:19,530 INFO L78 Accepts]: Start accepts. Automaton has 11328 states and 15519 transitions. Word has length 398 [2022-11-20 10:37:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:19,531 INFO L495 AbstractCegarLoop]: Abstraction has 11328 states and 15519 transitions. [2022-11-20 10:37:19,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-20 10:37:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 11328 states and 15519 transitions. [2022-11-20 10:37:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-20 10:37:19,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:19,545 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 24, 24, 24, 24, 24, 24, 12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:19,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:19,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:19,746 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:19,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1181947872, now seen corresponding path program 1 times [2022-11-20 10:37:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:19,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440669661] [2022-11-20 10:37:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:19,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:19,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:19,750 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:37:19,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 10:37:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:22,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:37:22,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3285 backedges. 393 proven. 3 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2022-11-20 10:37:23,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3285 backedges. 53 proven. 18 refuted. 0 times theorem prover too weak. 3214 trivial. 0 not checked. [2022-11-20 10:37:25,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:25,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440669661] [2022-11-20 10:37:25,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440669661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:25,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:25,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2022-11-20 10:37:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887893182] [2022-11-20 10:37:25,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:37:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:37:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:37:25,531 INFO L87 Difference]: Start difference. First operand 11328 states and 15519 transitions. Second operand has 22 states, 21 states have (on average 6.095238095238095) internal successors, (128), 20 states have internal predecessors, (128), 6 states have call successors, (72), 3 states have call predecessors, (72), 8 states have return successors, (71), 7 states have call predecessors, (71), 6 states have call successors, (71) [2022-11-20 10:38:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:24,211 INFO L93 Difference]: Finished difference Result 25499 states and 34896 transitions. [2022-11-20 10:38:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:38:24,213 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.095238095238095) internal successors, (128), 20 states have internal predecessors, (128), 6 states have call successors, (72), 3 states have call predecessors, (72), 8 states have return successors, (71), 7 states have call predecessors, (71), 6 states have call successors, (71) Word has length 439 [2022-11-20 10:38:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:24,288 INFO L225 Difference]: With dead ends: 25499 [2022-11-20 10:38:24,288 INFO L226 Difference]: Without dead ends: 14212 [2022-11-20 10:38:24,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 10:38:24,347 INFO L413 NwaCegarLoop]: 7749 mSDtfsCounter, 11586 mSDsluCounter, 120980 mSDsCounter, 0 mSdLazyCounter, 10650 mSolverCounterSat, 2502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11943 SdHoareTripleChecker+Valid, 128729 SdHoareTripleChecker+Invalid, 13152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2502 IncrementalHoareTripleChecker+Valid, 10650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:24,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11943 Valid, 128729 Invalid, 13152 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2502 Valid, 10650 Invalid, 0 Unknown, 0 Unchecked, 53.1s Time] [2022-11-20 10:38:24,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14212 states. [2022-11-20 10:38:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14212 to 11350. [2022-11-20 10:38:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11350 states, 7816 states have (on average 1.249616171954964) internal successors, (9767), 7971 states have internal predecessors, (9767), 2889 states have call successors, (2889), 645 states have call predecessors, (2889), 644 states have return successors, (2885), 2829 states have call predecessors, (2885), 2885 states have call successors, (2885) [2022-11-20 10:38:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11350 states to 11350 states and 15541 transitions. [2022-11-20 10:38:26,232 INFO L78 Accepts]: Start accepts. Automaton has 11350 states and 15541 transitions. Word has length 439 [2022-11-20 10:38:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:26,233 INFO L495 AbstractCegarLoop]: Abstraction has 11350 states and 15541 transitions. [2022-11-20 10:38:26,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.095238095238095) internal successors, (128), 20 states have internal predecessors, (128), 6 states have call successors, (72), 3 states have call predecessors, (72), 8 states have return successors, (71), 7 states have call predecessors, (71), 6 states have call successors, (71) [2022-11-20 10:38:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 11350 states and 15541 transitions. [2022-11-20 10:38:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-20 10:38:26,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:26,255 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 24, 24, 24, 24, 24, 24, 12, 11, 11, 7, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:26,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:26,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:26,470 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash -275728486, now seen corresponding path program 1 times [2022-11-20 10:38:26,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:26,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088413808] [2022-11-20 10:38:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:26,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:26,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:26,475 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:26,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 10:38:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:29,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3309 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2022-11-20 10:38:30,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:30,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:30,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088413808] [2022-11-20 10:38:30,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088413808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:30,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:30,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:38:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666333864] [2022-11-20 10:38:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:30,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:30,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:30,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:38:30,024 INFO L87 Difference]: Start difference. First operand 11350 states and 15541 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-20 10:38:44,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:44,297 INFO L93 Difference]: Finished difference Result 25901 states and 35383 transitions. [2022-11-20 10:38:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:38:44,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 447 [2022-11-20 10:38:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:44,347 INFO L225 Difference]: With dead ends: 25901 [2022-11-20 10:38:44,347 INFO L226 Difference]: Without dead ends: 17378 [2022-11-20 10:38:44,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:38:44,371 INFO L413 NwaCegarLoop]: 6710 mSDtfsCounter, 2709 mSDsluCounter, 11378 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2726 SdHoareTripleChecker+Valid, 18088 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:44,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2726 Valid, 18088 Invalid, 2186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-11-20 10:38:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17378 states. [2022-11-20 10:38:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17378 to 17313. [2022-11-20 10:38:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17313 states, 12043 states have (on average 1.2520966536577265) internal successors, (15079), 12247 states have internal predecessors, (15079), 4269 states have call successors, (4269), 1001 states have call predecessors, (4269), 1000 states have return successors, (4265), 4196 states have call predecessors, (4265), 4265 states have call successors, (4265) [2022-11-20 10:38:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 23613 transitions. [2022-11-20 10:38:47,042 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 23613 transitions. Word has length 447 [2022-11-20 10:38:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:47,043 INFO L495 AbstractCegarLoop]: Abstraction has 17313 states and 23613 transitions. [2022-11-20 10:38:47,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-20 10:38:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 23613 transitions. [2022-11-20 10:38:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-20 10:38:47,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:47,069 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 12, 11, 11, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:47,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:47,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:47,294 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1859920681, now seen corresponding path program 1 times [2022-11-20 10:38:47,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:47,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218413090] [2022-11-20 10:38:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:47,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:47,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:47,298 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:47,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 10:38:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:49,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:49,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3066 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3044 trivial. 0 not checked. [2022-11-20 10:38:52,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3066 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3044 trivial. 0 not checked. [2022-11-20 10:38:53,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:53,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218413090] [2022-11-20 10:38:53,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218413090] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:53,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:53,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:38:53,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057654441] [2022-11-20 10:38:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:53,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:53,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:53,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:53,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:53,770 INFO L87 Difference]: Start difference. First operand 17313 states and 23613 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-20 10:38:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:56,245 INFO L93 Difference]: Finished difference Result 17319 states and 23618 transitions. [2022-11-20 10:38:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:56,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 403 [2022-11-20 10:38:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:56,312 INFO L225 Difference]: With dead ends: 17319 [2022-11-20 10:38:56,312 INFO L226 Difference]: Without dead ends: 17317 [2022-11-20 10:38:56,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:56,321 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3922 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:56,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3922 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:38:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17317 states. [2022-11-20 10:38:58,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17317 to 17317. [2022-11-20 10:38:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17317 states, 12046 states have (on average 1.2520338701643698) internal successors, (15082), 12250 states have internal predecessors, (15082), 4269 states have call successors, (4269), 1002 states have call predecessors, (4269), 1001 states have return successors, (4265), 4196 states have call predecessors, (4265), 4265 states have call successors, (4265) [2022-11-20 10:38:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17317 states to 17317 states and 23616 transitions. [2022-11-20 10:38:58,876 INFO L78 Accepts]: Start accepts. Automaton has 17317 states and 23616 transitions. Word has length 403 [2022-11-20 10:38:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:58,877 INFO L495 AbstractCegarLoop]: Abstraction has 17317 states and 23616 transitions. [2022-11-20 10:38:58,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-20 10:38:58,877 INFO L276 IsEmpty]: Start isEmpty. Operand 17317 states and 23616 transitions. [2022-11-20 10:38:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-20 10:38:58,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:58,894 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 13, 12, 12, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:58,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:59,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:59,095 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:59,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:59,095 INFO L85 PathProgramCache]: Analyzing trace with hash -941641582, now seen corresponding path program 1 times [2022-11-20 10:38:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:59,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401140703] [2022-11-20 10:38:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:59,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:59,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:59,098 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:59,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 10:39:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:01,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2351 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:39:01,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3112 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3088 trivial. 0 not checked. [2022-11-20 10:39:04,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3112 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3088 trivial. 0 not checked. [2022-11-20 10:39:05,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:05,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401140703] [2022-11-20 10:39:05,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401140703] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:05,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:05,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:39:05,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220967899] [2022-11-20 10:39:05,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:05,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:05,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:05,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:05,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:05,795 INFO L87 Difference]: Start difference. First operand 17317 states and 23616 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-20 10:39:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:08,495 INFO L93 Difference]: Finished difference Result 17323 states and 23621 transitions. [2022-11-20 10:39:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:39:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 408 [2022-11-20 10:39:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:08,544 INFO L225 Difference]: With dead ends: 17323 [2022-11-20 10:39:08,544 INFO L226 Difference]: Without dead ends: 17319 [2022-11-20 10:39:08,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:39:08,550 INFO L413 NwaCegarLoop]: 4015 mSDtfsCounter, 3920 mSDsluCounter, 8009 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 12024 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:08,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 12024 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:39:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17319 states. [2022-11-20 10:39:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17319 to 17319. [2022-11-20 10:39:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17319 states, 12048 states have (on average 1.2519090305444887) internal successors, (15083), 12251 states have internal predecessors, (15083), 4269 states have call successors, (4269), 1003 states have call predecessors, (4269), 1001 states have return successors, (4265), 4196 states have call predecessors, (4265), 4265 states have call successors, (4265) [2022-11-20 10:39:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17319 states to 17319 states and 23617 transitions. [2022-11-20 10:39:11,226 INFO L78 Accepts]: Start accepts. Automaton has 17319 states and 23617 transitions. Word has length 408 [2022-11-20 10:39:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:11,227 INFO L495 AbstractCegarLoop]: Abstraction has 17319 states and 23617 transitions. [2022-11-20 10:39:11,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-20 10:39:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 17319 states and 23617 transitions. [2022-11-20 10:39:11,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-20 10:39:11,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:11,245 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 14, 13, 13, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:11,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-20 10:39:11,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:11,446 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash -607710857, now seen corresponding path program 1 times [2022-11-20 10:39:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:11,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396321610] [2022-11-20 10:39:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:11,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:11,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:11,449 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:39:11,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 10:39:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:14,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:39:14,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3136 trivial. 0 not checked. [2022-11-20 10:39:17,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3136 trivial. 0 not checked. [2022-11-20 10:39:18,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:18,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396321610] [2022-11-20 10:39:18,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396321610] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:18,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:18,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:39:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398899270] [2022-11-20 10:39:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:18,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:18,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:18,348 INFO L87 Difference]: Start difference. First operand 17319 states and 23617 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-20 10:39:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:21,449 INFO L93 Difference]: Finished difference Result 17319 states and 23617 transitions. [2022-11-20 10:39:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:39:21,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 413 [2022-11-20 10:39:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:21,451 INFO L225 Difference]: With dead ends: 17319 [2022-11-20 10:39:21,452 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 10:39:21,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:39:21,501 INFO L413 NwaCegarLoop]: 4013 mSDtfsCounter, 3916 mSDsluCounter, 8008 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 12021 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:21,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3916 Valid, 12021 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:39:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 10:39:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 10:39:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:39:21,505 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 413 [2022-11-20 10:39:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:21,506 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:39:21,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-20 10:39:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:39:21,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 10:39:21,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 10:39:21,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9ba682b-6da7-4261-9b55-1138d3f0eede/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:21,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.