./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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_82bb292f-a631-4633-bf63-8f059123d23e/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 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd --- 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 10:33:28,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:33:28,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:33:28,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:33:28,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:33:28,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:33:28,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:33:28,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:33:28,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:33:28,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:33:28,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:33:28,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:33:28,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:33:28,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:33:28,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:33:28,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:33:28,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:33:28,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:33:28,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:33:28,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:33:28,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:33:28,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:33:28,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:33:28,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:33:28,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:33:28,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:33:28,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:33:28,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:33:28,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:33:28,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:33:28,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:33:28,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:33:28,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:33:28,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:33:28,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:33:28,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:33:28,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:33:28,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:33:28,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:33:28,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:33:28,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:33:28,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:33:28,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:33:28,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:33:28,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:33:28,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:33:28,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:33:28,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:33:28,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:33:28,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:33:28,769 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:33:28,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:33:28,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:33:28,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:33:28,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:33:28,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:33:28,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:33:28,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:33:28,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:33:28,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:33:28,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:33:28,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:33:28,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:33:28,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:28,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:33:28,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:33:28,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:33:28,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:33:28,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:33:28,775 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:33:28,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:33:28,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:33:28,776 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_82bb292f-a631-4633-bf63-8f059123d23e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd [2022-11-20 10:33:29,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:33:29,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:33:29,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:33:29,107 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:33:29,108 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:33:29,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-20 10:33:32,226 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:33,032 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:33,033 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-20 10:33:33,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/data/a110f4345/12eb37a3b3164ac8b25b4d7bde14ba4c/FLAG872079cd0 [2022-11-20 10:33:33,106 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/data/a110f4345/12eb37a3b3164ac8b25b4d7bde14ba4c [2022-11-20 10:33:33,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:33,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:33,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:33,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:33,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:33,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:33" (1/1) ... [2022-11-20 10:33:33,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab24111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:33, skipping insertion in model container [2022-11-20 10:33:33,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:33" (1/1) ... [2022-11-20 10:33:33,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:33,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:33,918 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:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) 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:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) 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 10:33:33,929 INFO L158 Benchmark]: Toolchain (without parser) took 812.10ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 103.6MB in the beginning and 146.0MB in the end (delta: -42.4MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2022-11-20 10:33:33,930 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 151.0MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:33:33,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 807.52ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 103.6MB in the beginning and 146.0MB in the end (delta: -42.4MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2022-11-20 10:33:33,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 151.0MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 807.52ms. Allocated memory was 151.0MB in the beginning and 205.5MB in the end (delta: 54.5MB). Free memory was 103.6MB in the beginning and 146.0MB in the end (delta: -42.4MB). Peak memory consumption was 53.5MB. 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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_82bb292f-a631-4633-bf63-8f059123d23e/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 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd --- 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 10:33:36,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:33:36,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:33:36,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:33:36,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:33:36,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:33:36,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:33:36,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:33:36,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:33:36,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:33:36,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:33:36,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:33:36,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:33:36,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:33:36,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:33:36,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:33:36,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:33:36,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:33:36,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:33:36,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:33:36,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:33:36,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:33:36,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:33:36,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:33:36,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:33:36,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:33:36,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:33:36,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:33:36,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:33:36,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:33:36,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:33:36,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:33:36,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:33:36,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:33:36,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:33:36,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:33:36,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:33:36,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:33:36,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:33:36,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:33:36,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:33:36,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:33:36,508 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:33:36,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:33:36,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:33:36,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:33:36,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:33:36,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:33:36,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:33:36,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:33:36,512 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:33:36,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:33:36,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:33:36,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:33:36,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:33:36,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:33:36,514 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:33:36,514 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:33:36,514 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:33:36,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:33:36,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:33:36,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:33:36,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:33:36,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:33:36,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:33:36,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:36,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:33:36,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:33:36,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:33:36,517 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:33:36,518 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:33:36,518 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:33:36,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:33:36,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:33:36,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:33:36,519 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_82bb292f-a631-4633-bf63-8f059123d23e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd [2022-11-20 10:33:36,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:33:36,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:33:36,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:33:36,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:33:36,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:33:36,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-20 10:33:40,131 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:40,835 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:40,836 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-20 10:33:40,901 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/data/fcabc48ea/d01d0777e41e4459a2871e8d61e04bc3/FLAG02883906d [2022-11-20 10:33:40,931 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/data/fcabc48ea/d01d0777e41e4459a2871e8d61e04bc3 [2022-11-20 10:33:40,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:40,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:40,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:40,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:40,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:40,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:40" (1/1) ... [2022-11-20 10:33:40,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283ab59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:40, skipping insertion in model container [2022-11-20 10:33:40,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:40" (1/1) ... [2022-11-20 10:33:40,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:41,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:44,282 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-20 10:33:44,286 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-20 10:33:44,287 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-20 10:33:44,295 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-20 10:33:44,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:44,359 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:33:44,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:44,881 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-20 10:33:44,882 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-20 10:33:44,882 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-20 10:33:44,883 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-20 10:33:44,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:44,925 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:33:45,344 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-20 10:33:45,345 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-20 10:33:45,346 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-20 10:33:45,346 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_82bb292f-a631-4633-bf63-8f059123d23e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-20 10:33:45,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:45,681 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:33:45,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45 WrapperNode [2022-11-20 10:33:45,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:45,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:45,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:33:45,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:33:45,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:45,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,058 INFO L138 Inliner]: procedures = 440, calls = 2260, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 4653 [2022-11-20 10:33:46,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:46,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:33:46,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:33:46,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:33:46,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:33:46,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:33:46,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:33:46,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:33:46,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (1/1) ... [2022-11-20 10:33:46,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:46,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:46,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:33:46,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:33:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_resume [2022-11-20 10:33:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_resume [2022-11-20 10:33:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 10:33:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 10:33:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 10:33:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 10:33:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 10:33:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 10:33:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_write_reg [2022-11-20 10:33:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_write_reg [2022-11-20 10:33:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:33:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:33:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2022-11-20 10:33:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2022-11-20 10:33:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read8 [2022-11-20 10:33:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read8 [2022-11-20 10:33:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 10:33:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 10:33:46,541 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 10:33:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 10:33:46,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2022-11-20 10:33:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2022-11-20 10:33:46,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-20 10:33:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-20 10:33:46,542 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_read_and_clear_stats [2022-11-20 10:33:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_read_and_clear_stats [2022-11-20 10:33:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_sync [2022-11-20 10:33:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_sync [2022-11-20 10:33:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 10:33:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 10:33:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 10:33:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 10:33:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 10:33:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 10:33:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 10:33:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 10:33:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 10:33:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 10:33:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:33:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 10:33:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:33:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:33:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 10:33:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 10:33:46,547 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 10:33:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_lists [2022-11-20 10:33:46,547 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_lists [2022-11-20 10:33:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_close [2022-11-20 10:33:46,547 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_close [2022-11-20 10:33:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_65 [2022-11-20 10:33:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_65 [2022-11-20 10:33:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 10:33:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 10:33:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_print [2022-11-20 10:33:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_print [2022-11-20 10:33:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-20 10:33:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-20 10:33:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-20 10:33:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-20 10:33:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver [2022-11-20 10:33:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver [2022-11-20 10:33:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_probe1 [2022-11-20 10:33:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_probe1 [2022-11-20 10:33:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 10:33:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 10:33:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 10:33:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 10:33:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-20 10:33:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-20 10:33:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 10:33:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 10:33:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 10:33:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 10:33:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_timer [2022-11-20 10:33:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_timer [2022-11-20 10:33:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_timer [2022-11-20 10:33:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_timer [2022-11-20 10:33:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2022-11-20 10:33:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2022-11-20 10:33:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_stop [2022-11-20 10:33:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_stop [2022-11-20 10:33:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 10:33:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 10:33:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 10:33:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 10:33:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_remove_one [2022-11-20 10:33:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_remove_one [2022-11-20 10:33:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_get_skb [2022-11-20 10:33:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_get_skb [2022-11-20 10:33:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_byte [2022-11-20 10:33:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_byte [2022-11-20 10:33:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:33:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:33:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:33:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-20 10:33:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-20 10:33:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_poll [2022-11-20 10:33:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_poll [2022-11-20 10:33:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-20 10:33:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-20 10:33:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:33:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 10:33:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 10:33:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 10:33:46,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 10:33:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:33:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 10:33:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:33:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:33:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_free_lists [2022-11-20 10:33:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_free_lists [2022-11-20 10:33:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 10:33:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 10:33:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 10:33:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 10:33:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 10:33:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 10:33:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-20 10:33:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-20 10:33:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_store_skb [2022-11-20 10:33:46,573 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_store_skb [2022-11-20 10:33:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_tx_timeout [2022-11-20 10:33:46,573 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_tx_timeout [2022-11-20 10:33:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:33:46,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:33:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:33:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:33:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2022-11-20 10:33:46,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2022-11-20 10:33:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:33:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_up [2022-11-20 10:33:46,574 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_up [2022-11-20 10:33:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 10:33:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:33:46,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:33:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 10:33:46,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 10:33:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-20 10:33:46,575 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-20 10:33:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-20 10:33:46,575 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-20 10:33:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_handle_interrupt [2022-11-20 10:33:46,576 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_handle_interrupt [2022-11-20 10:33:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_start [2022-11-20 10:33:46,576 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_start [2022-11-20 10:33:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-20 10:33:46,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-20 10:33:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_finish_auto_neg [2022-11-20 10:33:46,576 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_finish_auto_neg [2022-11-20 10:33:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 10:33:46,577 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 10:33:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 10:33:46,577 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 10:33:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-20 10:33:46,577 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-20 10:33:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_start_link [2022-11-20 10:33:46,578 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_start_link [2022-11-20 10:33:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:33:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_multicast_list [2022-11-20 10:33:46,578 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_multicast_list [2022-11-20 10:33:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 10:33:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 10:33:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:33:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-20 10:33:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-20 10:33:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2022-11-20 10:33:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2022-11-20 10:33:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:33:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:33:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 10:33:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:33:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:33:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_print_list [2022-11-20 10:33:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_print_list [2022-11-20 10:33:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write16 [2022-11-20 10:33:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write16 [2022-11-20 10:33:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-20 10:33:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-20 10:33:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 10:33:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 10:33:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 10:33:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 10:33:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 10:33:46,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 10:33:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-20 10:33:46,582 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-20 10:33:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_finish_reset [2022-11-20 10:33:46,582 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_finish_reset [2022-11-20 10:33:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write32 [2022-11-20 10:33:46,582 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write32 [2022-11-20 10:33:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 10:33:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 10:33:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 10:33:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 10:33:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_mac [2022-11-20 10:33:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_mac [2022-11-20 10:33:46,583 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-20 10:33:46,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-20 10:33:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_start [2022-11-20 10:33:46,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_start [2022-11-20 10:33:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read32 [2022-11-20 10:33:46,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read32 [2022-11-20 10:33:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write8 [2022-11-20 10:33:46,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write8 [2022-11-20 10:33:46,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:33:46,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:33:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_down [2022-11-20 10:33:46,585 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_down [2022-11-20 10:33:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-20 10:33:46,585 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-20 10:33:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_adapter [2022-11-20 10:33:46,585 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_adapter [2022-11-20 10:33:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_send_data [2022-11-20 10:33:46,586 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_send_data [2022-11-20 10:33:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_reset [2022-11-20 10:33:46,586 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_reset [2022-11-20 10:33:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_read_reg [2022-11-20 10:33:46,586 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_read_reg [2022-11-20 10:33:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 10:33:46,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 10:33:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_open [2022-11-20 10:33:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_open [2022-11-20 10:33:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-20 10:33:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-20 10:33:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 10:33:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 10:33:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-20 10:33:46,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-20 10:33:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-20 10:33:46,589 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-20 10:33:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-20 10:33:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-20 10:33:46,589 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-20 10:33:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 10:33:46,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 10:33:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-20 10:33:46,590 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-20 10:33:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-20 10:33:46,590 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-20 10:33:47,473 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:33:47,477 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:33:59,988 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:34:27,091 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume 32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-20 10:34:27,092 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume !(32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-20 10:34:27,092 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957-1: tlan_eisa_probe_~device_id~1#1 := tlan_eisa_probe_#t~ret331#1;havoc tlan_eisa_probe_#t~ret331#1; [2022-11-20 10:34:27,092 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957: SUMMARY for call tlan_eisa_probe_#t~ret331#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-20 10:34:27,092 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6991: tlan_eisa_probe_~irq~0#1 := 9bv32; [2022-11-20 10:34:27,093 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0);havoc tlan_eisa_probe_#t~nondet328#1; [2022-11-20 10:34:27,093 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-20 10:34:27,093 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume 0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset); [2022-11-20 10:34:27,093 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume !(0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset)); [2022-11-20 10:34:27,093 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume 8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1); [2022-11-20 10:34:27,094 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume !(8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1)); [2022-11-20 10:34:27,094 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume ~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2022-11-20 10:34:27,094 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume !~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2022-11-20 10:34:27,094 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976-2: SUMMARY for call tlan_eisa_probe_#t~ret334#1 := inb(~bvadd32(3264bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-20 10:34:27,094 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet333#1; [2022-11-20 10:34:27,095 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume !(16bv32 == ~debug~0); [2022-11-20 10:34:27,095 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927-1: tlan_eisa_probe_~tmp___0~12#1 := tlan_eisa_probe_#t~ret326#1;havoc tlan_eisa_probe_#t~ret326#1;havoc tlan_eisa_probe_#t~nondet327#1; [2022-11-20 10:34:27,095 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927: SUMMARY for call tlan_eisa_probe_#t~ret326#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-20 10:34:27,095 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume 64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-20 10:34:27,095 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume !(64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-20 10:34:27,096 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6961: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-20 10:34:27,096 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2022-11-20 10:34:27,096 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-20 10:34:27,096 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6995: tlan_eisa_probe_~irq~0#1 := 10bv32; [2022-11-20 10:34:27,096 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947-1: tlan_eisa_probe_~tmp___2~2#1 := tlan_eisa_probe_#t~ret330#1;havoc tlan_eisa_probe_#t~ret330#1; [2022-11-20 10:34:27,096 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947: SUMMARY for call tlan_eisa_probe_#t~ret330#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-20 10:34:27,097 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7014: SUMMARY for call tlan_eisa_probe_#t~ret335#1 := tlan_probe1(0bv64, 0bv64, tlan_eisa_probe_~ioaddr~0#1, tlan_eisa_probe_~irq~0#1, 12bv32, 0bv64, 0bv64); srcloc: null [2022-11-20 10:34:27,097 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume 128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-20 10:34:27,097 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume !(128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-20 10:34:27,097 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6932-1: call tlan_eisa_probe_#t~ret329#1.base, tlan_eisa_probe_#t~ret329#1.offset := __request_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64, ~#tlan_signature~0.base, ~#tlan_signature~0.offset, 0bv32);tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset := tlan_eisa_probe_#t~ret329#1.base, tlan_eisa_probe_#t~ret329#1.offset;havoc tlan_eisa_probe_#t~ret329#1.base, tlan_eisa_probe_#t~ret329#1.offset; [2022-11-20 10:34:27,097 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume 4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1); [2022-11-20 10:34:27,098 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume !(4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1)); [2022-11-20 10:34:27,098 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6999: tlan_eisa_probe_~irq~0#1 := 11bv32; [2022-11-20 10:34:27,098 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6983: tlan_eisa_probe_~tmp___4~0#1 := tlan_eisa_probe_#t~ret334#1;havoc tlan_eisa_probe_#t~ret334#1; [2022-11-20 10:34:27,098 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967-1: tlan_eisa_probe_~tmp___3~1#1 := tlan_eisa_probe_#t~ret332#1;havoc tlan_eisa_probe_#t~ret332#1; [2022-11-20 10:34:27,098 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967: SUMMARY for call tlan_eisa_probe_#t~ret332#1 := inb(~bvadd32(3204bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-20 10:34:27,098 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7033-1: tlan_eisa_probe_~ioaddr~0#1 := ~bvadd64(4096bv64, tlan_eisa_probe_~ioaddr~0#1); [2022-11-20 10:34:27,098 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6951: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet336#1; [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume !(16bv32 == ~debug~0); [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume 1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1); [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume !(1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1)); [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume 16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume !(16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-20 10:34:27,099 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920-1: tlan_eisa_probe_~tmp~35#1 := tlan_eisa_probe_#t~ret324#1;havoc tlan_eisa_probe_#t~ret324#1;havoc tlan_eisa_probe_#t~nondet325#1; [2022-11-20 10:34:27,100 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920: SUMMARY for call tlan_eisa_probe_#t~ret324#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-20 10:34:27,100 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6987: tlan_eisa_probe_~irq~0#1 := 5bv32; [2022-11-20 10:34:27,100 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet337#1; [2022-11-20 10:34:27,100 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume !(16bv32 == ~debug~0); [2022-11-20 10:34:27,100 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-20 10:34:27,100 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7021: tlan_eisa_probe_~rc~2#1 := tlan_eisa_probe_#t~ret335#1;havoc tlan_eisa_probe_#t~ret335#1; [2022-11-20 10:34:27,244 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:34:27,263 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:34:27,264 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:34:27,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:34:27 BoogieIcfgContainer [2022-11-20 10:34:27,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:34:27,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:34:27,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:34:27,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:34:27,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:40" (1/3) ... [2022-11-20 10:34:27,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79628952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:34:27, skipping insertion in model container [2022-11-20 10:34:27,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:45" (2/3) ... [2022-11-20 10:34:27,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79628952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:34:27, skipping insertion in model container [2022-11-20 10:34:27,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:34:27" (3/3) ... [2022-11-20 10:34:27,277 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-20 10:34:27,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:34:27,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 10:34:27,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:34:27,397 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;@a872531, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:34:27,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 10:34:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 1968 states, 1256 states have (on average 1.2468152866242037) internal successors, (1566), 1312 states have internal predecessors, (1566), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) [2022-11-20 10:34:27,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 10:34:27,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:27,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 10:34:27,423 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash 737863230, now seen corresponding path program 1 times [2022-11-20 10:34:27,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:27,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83646780] [2022-11-20 10:34:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:27,449 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 10:34:27,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:27,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:27,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:29,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:34:29,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:34:29,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:34:29,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:29,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83646780] [2022-11-20 10:34:29,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83646780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:29,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:29,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:34:29,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530870817] [2022-11-20 10:34:29,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:29,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:34:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:34:29,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:29,573 INFO L87 Difference]: Start difference. First operand has 1968 states, 1256 states have (on average 1.2468152866242037) internal successors, (1566), 1312 states have internal predecessors, (1566), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:34:31,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:34:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:32,678 INFO L93 Difference]: Finished difference Result 5631 states and 8198 transitions. [2022-11-20 10:34:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:34:32,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-20 10:34:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:32,780 INFO L225 Difference]: With dead ends: 5631 [2022-11-20 10:34:32,781 INFO L226 Difference]: Without dead ends: 3656 [2022-11-20 10:34:32,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 10:34:32,825 INFO L413 NwaCegarLoop]: 3865 mSDtfsCounter, 2375 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 6523 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:32,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2375 Valid, 6523 Invalid, 119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 10:34:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2022-11-20 10:34:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3614. [2022-11-20 10:34:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 2325 states have (on average 1.2258064516129032) internal successors, (2850), 2426 states have internal predecessors, (2850), 1080 states have call successors, (1080), 207 states have call predecessors, (1080), 206 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-20 10:34:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5016 transitions. [2022-11-20 10:34:33,252 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5016 transitions. Word has length 52 [2022-11-20 10:34:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:33,253 INFO L495 AbstractCegarLoop]: Abstraction has 3614 states and 5016 transitions. [2022-11-20 10:34:33,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:34:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5016 transitions. [2022-11-20 10:34:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 10:34:33,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:33,264 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 10:34:33,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:34:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:33,487 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 722344512, now seen corresponding path program 1 times [2022-11-20 10:34:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:33,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224112630] [2022-11-20 10:34:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:33,491 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 10:34:33,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:33,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:33,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:35,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:34:35,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:34:35,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:34:35,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:35,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224112630] [2022-11-20 10:34:35,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224112630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:35,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:35,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:34:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864877842] [2022-11-20 10:34:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:35,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:34:35,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:35,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:34:35,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:34:35,995 INFO L87 Difference]: Start difference. First operand 3614 states and 5016 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:34:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:36,546 INFO L93 Difference]: Finished difference Result 3620 states and 5021 transitions. [2022-11-20 10:34:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:34:36,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-20 10:34:36,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:36,573 INFO L225 Difference]: With dead ends: 3620 [2022-11-20 10:34:36,573 INFO L226 Difference]: Without dead ends: 3618 [2022-11-20 10:34:36,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 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 10:34:36,578 INFO L413 NwaCegarLoop]: 2731 mSDtfsCounter, 2701 mSDsluCounter, 5450 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 8181 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:36,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 8181 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2022-11-20 10:34:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 3618. [2022-11-20 10:34:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 2328 states have (on average 1.2255154639175259) internal successors, (2853), 2429 states have internal predecessors, (2853), 1080 states have call successors, (1080), 208 states have call predecessors, (1080), 207 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-20 10:34:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5019 transitions. [2022-11-20 10:34:36,899 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5019 transitions. Word has length 52 [2022-11-20 10:34:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:36,900 INFO L495 AbstractCegarLoop]: Abstraction has 3618 states and 5019 transitions. [2022-11-20 10:34:36,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:34:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5019 transitions. [2022-11-20 10:34:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 10:34:36,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:36,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-20 10:34:36,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:37,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:37,127 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:37,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1060299599, now seen corresponding path program 1 times [2022-11-20 10:34:37,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:37,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125030674] [2022-11-20 10:34:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:37,130 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 10:34:37,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:37,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:37,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:38,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:34:38,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:34:39,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:34:39,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:39,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125030674] [2022-11-20 10:34:39,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125030674] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:39,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:34:39,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:34:39,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230485770] [2022-11-20 10:34:39,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:39,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:34:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:39,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:34:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:39,669 INFO L87 Difference]: Start difference. First operand 3618 states and 5019 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:34:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:40,290 INFO L93 Difference]: Finished difference Result 3624 states and 5024 transitions. [2022-11-20 10:34:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:34:40,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-20 10:34:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:40,319 INFO L225 Difference]: With dead ends: 3624 [2022-11-20 10:34:40,319 INFO L226 Difference]: Without dead ends: 3622 [2022-11-20 10:34:40,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 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 10:34:40,326 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2712 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:40,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2712 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-11-20 10:34:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-11-20 10:34:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 2331 states have (on average 1.2252252252252251) internal successors, (2856), 2432 states have internal predecessors, (2856), 1080 states have call successors, (1080), 209 states have call predecessors, (1080), 208 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-20 10:34:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5022 transitions. [2022-11-20 10:34:40,680 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5022 transitions. Word has length 57 [2022-11-20 10:34:40,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:40,682 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 5022 transitions. [2022-11-20 10:34:40,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:34:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5022 transitions. [2022-11-20 10:34:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 10:34:40,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:40,687 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:34:40,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:40,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:40,903 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 962167648, now seen corresponding path program 1 times [2022-11-20 10:34:40,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:40,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742476336] [2022-11-20 10:34:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:40,905 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 10:34:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:40,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:40,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:42,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:34:42,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 10:34:42,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 10:34:43,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:43,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742476336] [2022-11-20 10:34:43,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742476336] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:43,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:34:43,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:34:43,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688943636] [2022-11-20 10:34:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:43,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:34:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:34:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:43,304 INFO L87 Difference]: Start difference. First operand 3622 states and 5022 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:34:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:43,916 INFO L93 Difference]: Finished difference Result 3628 states and 5027 transitions. [2022-11-20 10:34:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:34:43,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-11-20 10:34:43,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:43,938 INFO L225 Difference]: With dead ends: 3628 [2022-11-20 10:34:43,939 INFO L226 Difference]: Without dead ends: 3626 [2022-11-20 10:34:43,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 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 10:34:43,943 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:43,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2022-11-20 10:34:44,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3626. [2022-11-20 10:34:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 2334 states have (on average 1.224935732647815) internal successors, (2859), 2435 states have internal predecessors, (2859), 1080 states have call successors, (1080), 210 states have call predecessors, (1080), 209 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-20 10:34:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 5025 transitions. [2022-11-20 10:34:44,326 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 5025 transitions. Word has length 62 [2022-11-20 10:34:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:44,326 INFO L495 AbstractCegarLoop]: Abstraction has 3626 states and 5025 transitions. [2022-11-20 10:34:44,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:34:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 5025 transitions. [2022-11-20 10:34:44,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 10:34:44,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:44,328 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2022-11-20 10:34:44,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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)] Ended with exit code 0 [2022-11-20 10:34:44,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:44,543 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:44,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash -881435217, now seen corresponding path program 1 times [2022-11-20 10:34:44,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:44,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707071918] [2022-11-20 10:34:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:44,545 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 10:34:44,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:44,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:44,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:46,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:34:46,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 10:34:46,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 10:34:46,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707071918] [2022-11-20 10:34:46,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707071918] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:46,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:34:46,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:34:46,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049273805] [2022-11-20 10:34:46,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:46,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:34:46,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:34:46,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:46,965 INFO L87 Difference]: Start difference. First operand 3626 states and 5025 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 10:34:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:47,634 INFO L93 Difference]: Finished difference Result 3632 states and 5030 transitions. [2022-11-20 10:34:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:34:47,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2022-11-20 10:34:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:47,654 INFO L225 Difference]: With dead ends: 3632 [2022-11-20 10:34:47,654 INFO L226 Difference]: Without dead ends: 3630 [2022-11-20 10:34:47,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 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 10:34:47,657 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:47,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2710 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2022-11-20 10:34:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 3630. [2022-11-20 10:34:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 2337 states have (on average 1.2246469833119384) internal successors, (2862), 2438 states have internal predecessors, (2862), 1080 states have call successors, (1080), 211 states have call predecessors, (1080), 210 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-20 10:34:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5028 transitions. [2022-11-20 10:34:48,091 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5028 transitions. Word has length 67 [2022-11-20 10:34:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:48,092 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 5028 transitions. [2022-11-20 10:34:48,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 10:34:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5028 transitions. [2022-11-20 10:34:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 10:34:48,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:48,094 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2022-11-20 10:34:48,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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)] Ended with exit code 0 [2022-11-20 10:34:48,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:48,307 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:48,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1304578944, now seen corresponding path program 1 times [2022-11-20 10:34:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:48,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513574934] [2022-11-20 10:34:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:48,310 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 10:34:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:48,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:48,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:49,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:34:49,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 10:34:50,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 10:34:50,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:50,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513574934] [2022-11-20 10:34:50,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513574934] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:50,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:34:50,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:34:50,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785284564] [2022-11-20 10:34:50,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:50,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:34:50,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:50,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:34:50,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:50,858 INFO L87 Difference]: Start difference. First operand 3630 states and 5028 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 10:34:51,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:51,604 INFO L93 Difference]: Finished difference Result 3636 states and 5033 transitions. [2022-11-20 10:34:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:34:51,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-11-20 10:34:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:51,626 INFO L225 Difference]: With dead ends: 3636 [2022-11-20 10:34:51,626 INFO L226 Difference]: Without dead ends: 3634 [2022-11-20 10:34:51,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 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 10:34:51,631 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:51,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2709 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-11-20 10:34:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2022-11-20 10:34:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 2340 states have (on average 1.2243589743589745) internal successors, (2865), 2441 states have internal predecessors, (2865), 1080 states have call successors, (1080), 212 states have call predecessors, (1080), 211 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-20 10:34:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5031 transitions. [2022-11-20 10:34:52,051 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5031 transitions. Word has length 72 [2022-11-20 10:34:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:52,052 INFO L495 AbstractCegarLoop]: Abstraction has 3634 states and 5031 transitions. [2022-11-20 10:34:52,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 10:34:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5031 transitions. [2022-11-20 10:34:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:34:52,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:52,054 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 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] [2022-11-20 10:34:52,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:52,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:52,275 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:52,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:52,275 INFO L85 PathProgramCache]: Analyzing trace with hash 358486031, now seen corresponding path program 1 times [2022-11-20 10:34:52,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:52,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496124357] [2022-11-20 10:34:52,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:52,277 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 10:34:52,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:52,278 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:52,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:53,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:34:53,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 10:34:54,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 10:34:54,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:54,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496124357] [2022-11-20 10:34:54,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496124357] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:54,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:34:54,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:34:54,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946482650] [2022-11-20 10:34:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:54,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:34:54,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:34:54,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:54,763 INFO L87 Difference]: Start difference. First operand 3634 states and 5031 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:34:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:55,436 INFO L93 Difference]: Finished difference Result 3640 states and 5036 transitions. [2022-11-20 10:34:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:34:55,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2022-11-20 10:34:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:55,459 INFO L225 Difference]: With dead ends: 3640 [2022-11-20 10:34:55,459 INFO L226 Difference]: Without dead ends: 3638 [2022-11-20 10:34:55,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 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 10:34:55,462 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:55,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2708 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-11-20 10:34:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2022-11-20 10:34:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 2343 states have (on average 1.2240717029449424) internal successors, (2868), 2444 states have internal predecessors, (2868), 1080 states have call successors, (1080), 213 states have call predecessors, (1080), 212 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-20 10:34:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5034 transitions. [2022-11-20 10:34:55,989 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5034 transitions. Word has length 77 [2022-11-20 10:34:55,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:55,990 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5034 transitions. [2022-11-20 10:34:55,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:34:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5034 transitions. [2022-11-20 10:34:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 10:34:55,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:55,993 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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] [2022-11-20 10:34:56,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:56,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:56,213 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:56,213 INFO L85 PathProgramCache]: Analyzing trace with hash -480203360, now seen corresponding path program 1 times [2022-11-20 10:34:56,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:56,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938694115] [2022-11-20 10:34:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:56,215 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 10:34:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:56,216 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:56,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:34:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:57,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:34:57,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-20 10:34:58,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-20 10:34:58,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:58,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938694115] [2022-11-20 10:34:58,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938694115] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:58,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:34:58,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:34:58,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815044543] [2022-11-20 10:34:58,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:58,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:34:58,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:34:58,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:58,695 INFO L87 Difference]: Start difference. First operand 3638 states and 5034 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 10:34:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:59,685 INFO L93 Difference]: Finished difference Result 6705 states and 9602 transitions. [2022-11-20 10:34:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:34:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2022-11-20 10:34:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:59,729 INFO L225 Difference]: With dead ends: 6705 [2022-11-20 10:34:59,729 INFO L226 Difference]: Without dead ends: 6703 [2022-11-20 10:34:59,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 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 10:34:59,734 INFO L413 NwaCegarLoop]: 3610 mSDtfsCounter, 2328 mSDsluCounter, 9949 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 13559 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:59,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2333 Valid, 13559 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6703 states. [2022-11-20 10:35:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6703 to 6689. [2022-11-20 10:35:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6689 states, 4296 states have (on average 1.220903165735568) internal successors, (5245), 4493 states have internal predecessors, (5245), 1980 states have call successors, (1980), 422 states have call predecessors, (1980), 410 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-20 10:35:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6689 states to 6689 states and 9589 transitions. [2022-11-20 10:35:00,838 INFO L78 Accepts]: Start accepts. Automaton has 6689 states and 9589 transitions. Word has length 82 [2022-11-20 10:35:00,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:00,839 INFO L495 AbstractCegarLoop]: Abstraction has 6689 states and 9589 transitions. [2022-11-20 10:35:00,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 10:35:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6689 states and 9589 transitions. [2022-11-20 10:35:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 10:35:00,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:00,845 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 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] [2022-11-20 10:35:00,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:01,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:01,067 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:01,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:01,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2018658944, now seen corresponding path program 1 times [2022-11-20 10:35:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:01,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767959743] [2022-11-20 10:35:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:01,070 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 10:35:01,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:01,072 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:01,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:02,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:35:02,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-20 10:35:03,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 10:35:04,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:04,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767959743] [2022-11-20 10:35:04,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767959743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:35:04,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:35:04,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2022-11-20 10:35:04,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927305425] [2022-11-20 10:35:04,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:35:04,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:35:04,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:35:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:35:04,860 INFO L87 Difference]: Start difference. First operand 6689 states and 9589 transitions. Second operand has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 6 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2022-11-20 10:35:10,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:10,616 INFO L93 Difference]: Finished difference Result 10630 states and 15248 transitions. [2022-11-20 10:35:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:35:10,616 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 6 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) Word has length 101 [2022-11-20 10:35:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:10,659 INFO L225 Difference]: With dead ends: 10630 [2022-11-20 10:35:10,659 INFO L226 Difference]: Without dead ends: 6749 [2022-11-20 10:35:10,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:35:10,700 INFO L413 NwaCegarLoop]: 2697 mSDtfsCounter, 187 mSDsluCounter, 37545 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 40242 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 40242 Invalid, 773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 10:35:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6749 states. [2022-11-20 10:35:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6749 to 6724. [2022-11-20 10:35:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6724 states, 4323 states have (on average 1.2195234790654639) internal successors, (5272), 4520 states have internal predecessors, (5272), 1988 states have call successors, (1988), 422 states have call predecessors, (1988), 410 states have return successors, (2372), 1886 states have call predecessors, (2372), 1982 states have call successors, (2372) [2022-11-20 10:35:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 9632 transitions. [2022-11-20 10:35:11,885 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 9632 transitions. Word has length 101 [2022-11-20 10:35:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:11,885 INFO L495 AbstractCegarLoop]: Abstraction has 6724 states and 9632 transitions. [2022-11-20 10:35:11,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 6 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2022-11-20 10:35:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 9632 transitions. [2022-11-20 10:35:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 10:35:11,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:11,888 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 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] [2022-11-20 10:35:11,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:12,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:12,105 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:12,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:12,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1728313967, now seen corresponding path program 1 times [2022-11-20 10:35:12,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:12,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145785060] [2022-11-20 10:35:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:12,108 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 10:35:12,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:12,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:12,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:13,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:13,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-20 10:35:14,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-20 10:35:15,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:15,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145785060] [2022-11-20 10:35:15,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145785060] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:15,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:15,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:15,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645128657] [2022-11-20 10:35:15,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:15,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:15,118 INFO L87 Difference]: Start difference. First operand 6724 states and 9632 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 10:35:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:16,033 INFO L93 Difference]: Finished difference Result 6734 states and 9641 transitions. [2022-11-20 10:35:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:16,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2022-11-20 10:35:16,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:16,063 INFO L225 Difference]: With dead ends: 6734 [2022-11-20 10:35:16,063 INFO L226 Difference]: Without dead ends: 6732 [2022-11-20 10:35:16,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 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 10:35:16,068 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:16,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2706 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:35:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6732 states. [2022-11-20 10:35:17,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6732 to 6732. [2022-11-20 10:35:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6732 states, 4329 states have (on average 1.2192192192192193) internal successors, (5278), 4526 states have internal predecessors, (5278), 1988 states have call successors, (1988), 424 states have call predecessors, (1988), 412 states have return successors, (2372), 1886 states have call predecessors, (2372), 1982 states have call successors, (2372) [2022-11-20 10:35:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 9638 transitions. [2022-11-20 10:35:17,100 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 9638 transitions. Word has length 87 [2022-11-20 10:35:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:17,100 INFO L495 AbstractCegarLoop]: Abstraction has 6732 states and 9638 transitions. [2022-11-20 10:35:17,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 10:35:17,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 9638 transitions. [2022-11-20 10:35:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 10:35:17,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:17,102 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2022-11-20 10:35:17,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:17,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:17,319 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1024954688, now seen corresponding path program 1 times [2022-11-20 10:35:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:17,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275860031] [2022-11-20 10:35:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:17,322 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 10:35:17,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:17,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:17,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:18,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:18,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-20 10:35:19,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-20 10:35:20,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:20,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275860031] [2022-11-20 10:35:20,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275860031] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:20,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:20,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:20,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375036975] [2022-11-20 10:35:20,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:20,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:20,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:20,109 INFO L87 Difference]: Start difference. First operand 6732 states and 9638 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 10:35:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:21,359 INFO L93 Difference]: Finished difference Result 6742 states and 9647 transitions. [2022-11-20 10:35:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:21,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2022-11-20 10:35:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:21,389 INFO L225 Difference]: With dead ends: 6742 [2022-11-20 10:35:21,390 INFO L226 Difference]: Without dead ends: 6740 [2022-11-20 10:35:21,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 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 10:35:21,394 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:21,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:35:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2022-11-20 10:35:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 6740. [2022-11-20 10:35:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6740 states, 4335 states have (on average 1.2189158016147636) internal successors, (5284), 4532 states have internal predecessors, (5284), 1988 states have call successors, (1988), 426 states have call predecessors, (1988), 414 states have return successors, (2372), 1886 states have call predecessors, (2372), 1982 states have call successors, (2372) [2022-11-20 10:35:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6740 states to 6740 states and 9644 transitions. [2022-11-20 10:35:22,180 INFO L78 Accepts]: Start accepts. Automaton has 6740 states and 9644 transitions. Word has length 92 [2022-11-20 10:35:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:22,181 INFO L495 AbstractCegarLoop]: Abstraction has 6740 states and 9644 transitions. [2022-11-20 10:35:22,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 10:35:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6740 states and 9644 transitions. [2022-11-20 10:35:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 10:35:22,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:22,183 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 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] [2022-11-20 10:35:22,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:22,386 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:22,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1308484401, now seen corresponding path program 1 times [2022-11-20 10:35:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:22,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772498218] [2022-11-20 10:35:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:22,388 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 10:35:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:22,389 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:22,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:23,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:23,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 10:35:24,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 10:35:25,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:25,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772498218] [2022-11-20 10:35:25,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772498218] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:25,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:25,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:25,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901926247] [2022-11-20 10:35:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:25,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:25,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:25,082 INFO L87 Difference]: Start difference. First operand 6740 states and 9644 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 10:35:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:25,926 INFO L93 Difference]: Finished difference Result 6750 states and 9653 transitions. [2022-11-20 10:35:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:25,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2022-11-20 10:35:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:25,960 INFO L225 Difference]: With dead ends: 6750 [2022-11-20 10:35:25,960 INFO L226 Difference]: Without dead ends: 6748 [2022-11-20 10:35:25,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 187 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 10:35:25,966 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:25,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:35:25,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2022-11-20 10:35:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6748. [2022-11-20 10:35:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6748 states, 4341 states have (on average 1.2186132227597328) internal successors, (5290), 4538 states have internal predecessors, (5290), 1988 states have call successors, (1988), 428 states have call predecessors, (1988), 416 states have return successors, (2372), 1886 states have call predecessors, (2372), 1982 states have call successors, (2372) [2022-11-20 10:35:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 9650 transitions. [2022-11-20 10:35:26,997 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 9650 transitions. Word has length 97 [2022-11-20 10:35:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:26,998 INFO L495 AbstractCegarLoop]: Abstraction has 6748 states and 9650 transitions. [2022-11-20 10:35:26,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 10:35:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 9650 transitions. [2022-11-20 10:35:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 10:35:27,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:27,000 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 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] [2022-11-20 10:35:27,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:27,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:27,202 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1333458912, now seen corresponding path program 1 times [2022-11-20 10:35:27,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:27,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813747882] [2022-11-20 10:35:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:27,204 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 10:35:27,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:27,205 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:27,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:28,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:28,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:35:29,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:35:30,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:30,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813747882] [2022-11-20 10:35:30,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813747882] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:30,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:30,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:30,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628012039] [2022-11-20 10:35:30,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:30,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:30,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:30,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:30,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:30,262 INFO L87 Difference]: Start difference. First operand 6748 states and 9650 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:35:31,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:31,194 INFO L93 Difference]: Finished difference Result 6758 states and 9659 transitions. [2022-11-20 10:35:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:31,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2022-11-20 10:35:31,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:31,221 INFO L225 Difference]: With dead ends: 6758 [2022-11-20 10:35:31,221 INFO L226 Difference]: Without dead ends: 6754 [2022-11-20 10:35:31,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 197 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 10:35:31,225 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:31,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:35:31,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6754 states. [2022-11-20 10:35:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6754 to 6754. [2022-11-20 10:35:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6754 states, 4346 states have (on average 1.218131615278417) internal successors, (5294), 4542 states have internal predecessors, (5294), 1988 states have call successors, (1988), 430 states have call predecessors, (1988), 417 states have return successors, (2372), 1886 states have call predecessors, (2372), 1982 states have call successors, (2372) [2022-11-20 10:35:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6754 states to 6754 states and 9654 transitions. [2022-11-20 10:35:32,392 INFO L78 Accepts]: Start accepts. Automaton has 6754 states and 9654 transitions. Word has length 102 [2022-11-20 10:35:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:32,393 INFO L495 AbstractCegarLoop]: Abstraction has 6754 states and 9654 transitions. [2022-11-20 10:35:32,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:35:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6754 states and 9654 transitions. [2022-11-20 10:35:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 10:35:32,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:32,395 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 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] [2022-11-20 10:35:32,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:32,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:32,620 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash 796030767, now seen corresponding path program 1 times [2022-11-20 10:35:32,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:32,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973131980] [2022-11-20 10:35:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:32,623 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 10:35:32,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:32,624 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:32,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:34,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:34,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 10:35:35,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 10:35:35,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:35,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973131980] [2022-11-20 10:35:35,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973131980] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:35,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:35,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:35,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742209262] [2022-11-20 10:35:35,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:35,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:35,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:35,505 INFO L87 Difference]: Start difference. First operand 6754 states and 9654 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:35:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:36,802 INFO L93 Difference]: Finished difference Result 6760 states and 9659 transitions. [2022-11-20 10:35:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:36,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 107 [2022-11-20 10:35:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:36,842 INFO L225 Difference]: With dead ends: 6760 [2022-11-20 10:35:36,843 INFO L226 Difference]: Without dead ends: 6635 [2022-11-20 10:35:36,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 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 10:35:36,850 INFO L413 NwaCegarLoop]: 2735 mSDtfsCounter, 2702 mSDsluCounter, 5451 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 8186 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 10:35:36,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 8186 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:35:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2022-11-20 10:35:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 6635. [2022-11-20 10:35:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6635 states, 4273 states have (on average 1.2190498478820502) internal successors, (5209), 4466 states have internal predecessors, (5209), 1958 states have call successors, (1958), 413 states have call predecessors, (1958), 401 states have return successors, (2345), 1860 states have call predecessors, (2345), 1955 states have call successors, (2345) [2022-11-20 10:35:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6635 states to 6635 states and 9512 transitions. [2022-11-20 10:35:38,014 INFO L78 Accepts]: Start accepts. Automaton has 6635 states and 9512 transitions. Word has length 107 [2022-11-20 10:35:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:38,015 INFO L495 AbstractCegarLoop]: Abstraction has 6635 states and 9512 transitions. [2022-11-20 10:35:38,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:35:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6635 states and 9512 transitions. [2022-11-20 10:35:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-20 10:35:38,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:38,019 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:38,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:38,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:38,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:38,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1447345340, now seen corresponding path program 1 times [2022-11-20 10:35:38,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:38,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101744662] [2022-11-20 10:35:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:38,245 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 10:35:38,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:38,246 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:38,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:40,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 10:35:40,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-20 10:35:41,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:41,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:41,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101744662] [2022-11-20 10:35:41,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101744662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:41,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:41,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:35:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067282825] [2022-11-20 10:35:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:41,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:35:41,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:35:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:35:41,438 INFO L87 Difference]: Start difference. First operand 6635 states and 9512 transitions. Second operand has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 10:35:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:44,475 INFO L93 Difference]: Finished difference Result 13263 states and 19012 transitions. [2022-11-20 10:35:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:35:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2022-11-20 10:35:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:44,523 INFO L225 Difference]: With dead ends: 13263 [2022-11-20 10:35:44,523 INFO L226 Difference]: Without dead ends: 6643 [2022-11-20 10:35:44,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:35:44,583 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 117 mSDsluCounter, 18575 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 21262 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:44,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 21262 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 10:35:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6643 states. [2022-11-20 10:35:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 6635. [2022-11-20 10:35:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6635 states, 4273 states have (on average 1.2188158202667916) internal successors, (5208), 4465 states have internal predecessors, (5208), 1958 states have call successors, (1958), 413 states have call predecessors, (1958), 401 states have return successors, (2345), 1860 states have call predecessors, (2345), 1955 states have call successors, (2345) [2022-11-20 10:35:45,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6635 states to 6635 states and 9511 transitions. [2022-11-20 10:35:45,595 INFO L78 Accepts]: Start accepts. Automaton has 6635 states and 9511 transitions. Word has length 150 [2022-11-20 10:35:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:45,596 INFO L495 AbstractCegarLoop]: Abstraction has 6635 states and 9511 transitions. [2022-11-20 10:35:45,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 10:35:45,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6635 states and 9511 transitions. [2022-11-20 10:35:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 10:35:45,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:45,599 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:45,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:45,815 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:45,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1257777345, now seen corresponding path program 1 times [2022-11-20 10:35:45,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:45,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902711958] [2022-11-20 10:35:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:45,817 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 10:35:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:45,818 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:45,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:47,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:35:47,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 10:35:48,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:48,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:48,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902711958] [2022-11-20 10:35:48,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902711958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:48,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:48,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 10:35:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321163926] [2022-11-20 10:35:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:48,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:35:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:35:48,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:35:48,693 INFO L87 Difference]: Start difference. First operand 6635 states and 9511 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-20 10:35:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:53,953 INFO L93 Difference]: Finished difference Result 13809 states and 19807 transitions. [2022-11-20 10:35:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:35:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 154 [2022-11-20 10:35:53,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:53,998 INFO L225 Difference]: With dead ends: 13809 [2022-11-20 10:35:53,999 INFO L226 Difference]: Without dead ends: 7189 [2022-11-20 10:35:54,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2022-11-20 10:35:54,058 INFO L413 NwaCegarLoop]: 2782 mSDtfsCounter, 282 mSDsluCounter, 32938 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 35720 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:54,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 35720 Invalid, 791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [114 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 10:35:54,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7189 states. [2022-11-20 10:35:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7189 to 6679. [2022-11-20 10:35:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 4305 states have (on average 1.2171893147502904) internal successors, (5240), 4497 states have internal predecessors, (5240), 1966 states have call successors, (1966), 413 states have call predecessors, (1966), 405 states have return successors, (2357), 1872 states have call predecessors, (2357), 1963 states have call successors, (2357) [2022-11-20 10:35:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 9563 transitions. [2022-11-20 10:35:55,291 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 9563 transitions. Word has length 154 [2022-11-20 10:35:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:55,292 INFO L495 AbstractCegarLoop]: Abstraction has 6679 states and 9563 transitions. [2022-11-20 10:35:55,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-20 10:35:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 9563 transitions. [2022-11-20 10:35:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-20 10:35:55,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:55,294 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:55,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:55,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:55,507 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1272649753, now seen corresponding path program 1 times [2022-11-20 10:35:55,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:55,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131391012] [2022-11-20 10:35:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:55,510 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 10:35:55,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:55,511 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:55,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:35:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:57,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:35:57,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-20 10:35:57,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:57,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:57,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131391012] [2022-11-20 10:35:57,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131391012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:57,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:57,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731659489] [2022-11-20 10:35:57,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:57,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:57,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:57,595 INFO L87 Difference]: Start difference. First operand 6679 states and 9563 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:35:59,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:36:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:00,812 INFO L93 Difference]: Finished difference Result 13439 states and 19273 transitions. [2022-11-20 10:36:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:00,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2022-11-20 10:36:00,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:00,852 INFO L225 Difference]: With dead ends: 13439 [2022-11-20 10:36:00,852 INFO L226 Difference]: Without dead ends: 6779 [2022-11-20 10:36:00,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 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 10:36:00,897 INFO L413 NwaCegarLoop]: 2722 mSDtfsCounter, 34 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:00,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5406 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 10:36:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6779 states. [2022-11-20 10:36:01,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6779 to 6763. [2022-11-20 10:36:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 4365 states have (on average 1.2160366552119128) internal successors, (5308), 4557 states have internal predecessors, (5308), 1990 states have call successors, (1990), 413 states have call predecessors, (1990), 405 states have return successors, (2381), 1896 states have call predecessors, (2381), 1987 states have call successors, (2381) [2022-11-20 10:36:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9679 transitions. [2022-11-20 10:36:01,967 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9679 transitions. Word has length 158 [2022-11-20 10:36:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:01,967 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9679 transitions. [2022-11-20 10:36:01,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:36:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9679 transitions. [2022-11-20 10:36:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-20 10:36:01,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:01,970 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:02,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:02,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:02,195 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:36:02,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1714890858, now seen corresponding path program 1 times [2022-11-20 10:36:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:02,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373651576] [2022-11-20 10:36:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:02,197 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 10:36:02,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:02,198 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:02,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:04,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:36:04,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 10:36:05,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:05,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:05,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373651576] [2022-11-20 10:36:05,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373651576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:05,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:05,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 10:36:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006106735] [2022-11-20 10:36:05,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:05,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:36:05,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:36:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:36:05,222 INFO L87 Difference]: Start difference. First operand 6763 states and 9679 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-20 10:36:10,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:10,738 INFO L93 Difference]: Finished difference Result 14264 states and 20469 transitions. [2022-11-20 10:36:10,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:36:10,739 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 162 [2022-11-20 10:36:10,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:10,771 INFO L225 Difference]: With dead ends: 14264 [2022-11-20 10:36:10,772 INFO L226 Difference]: Without dead ends: 7516 [2022-11-20 10:36:10,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:36:10,811 INFO L413 NwaCegarLoop]: 2867 mSDtfsCounter, 410 mSDsluCounter, 36718 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 39585 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:10,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 39585 Invalid, 871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 10:36:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2022-11-20 10:36:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 6771. [2022-11-20 10:36:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6771 states, 4369 states have (on average 1.2158388647287708) internal successors, (5312), 4565 states have internal predecessors, (5312), 1990 states have call successors, (1990), 413 states have call predecessors, (1990), 409 states have return successors, (2397), 1896 states have call predecessors, (2397), 1987 states have call successors, (2397) [2022-11-20 10:36:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 9699 transitions. [2022-11-20 10:36:11,920 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 9699 transitions. Word has length 162 [2022-11-20 10:36:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:11,921 INFO L495 AbstractCegarLoop]: Abstraction has 6771 states and 9699 transitions. [2022-11-20 10:36:11,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-20 10:36:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 9699 transitions. [2022-11-20 10:36:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:36:11,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:11,923 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:11,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:12,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:12,123 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:36:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash 260895441, now seen corresponding path program 1 times [2022-11-20 10:36:12,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:12,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174515847] [2022-11-20 10:36:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:12,126 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 10:36:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:12,127 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:12,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 10:36:14,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-20 10:36:16,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-20 10:36:20,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:20,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174515847] [2022-11-20 10:36:20,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174515847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:20,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:36:20,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 25 [2022-11-20 10:36:20,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055005440] [2022-11-20 10:36:20,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:20,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:36:20,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:20,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:36:20,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:36:20,377 INFO L87 Difference]: Start difference. First operand 6771 states and 9699 transitions. Second operand has 25 states, 20 states have (on average 6.25) internal successors, (125), 18 states have internal predecessors, (125), 10 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (37), 11 states have call predecessors, (37), 8 states have call successors, (37) [2022-11-20 10:36:26,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:36:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:31,382 INFO L93 Difference]: Finished difference Result 13574 states and 19484 transitions. [2022-11-20 10:36:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:36:31,383 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 6.25) internal successors, (125), 18 states have internal predecessors, (125), 10 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (37), 11 states have call predecessors, (37), 8 states have call successors, (37) Word has length 179 [2022-11-20 10:36:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:31,414 INFO L225 Difference]: With dead ends: 13574 [2022-11-20 10:36:31,414 INFO L226 Difference]: Without dead ends: 6822 [2022-11-20 10:36:31,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2022-11-20 10:36:31,450 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 484 mSDsluCounter, 42867 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 45590 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:31,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 45590 Invalid, 1192 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [170 Valid, 1021 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-20 10:36:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6822 states. [2022-11-20 10:36:32,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6822 to 6715. [2022-11-20 10:36:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6715 states, 4325 states have (on average 1.2138728323699421) internal successors, (5250), 4520 states have internal predecessors, (5250), 1979 states have call successors, (1979), 412 states have call predecessors, (1979), 408 states have return successors, (2386), 1886 states have call predecessors, (2386), 1976 states have call successors, (2386) [2022-11-20 10:36:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 9615 transitions. [2022-11-20 10:36:32,670 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 9615 transitions. Word has length 179 [2022-11-20 10:36:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:32,670 INFO L495 AbstractCegarLoop]: Abstraction has 6715 states and 9615 transitions. [2022-11-20 10:36:32,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 6.25) internal successors, (125), 18 states have internal predecessors, (125), 10 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (37), 11 states have call predecessors, (37), 8 states have call successors, (37) [2022-11-20 10:36:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 9615 transitions. [2022-11-20 10:36:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-20 10:36:32,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:32,673 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:32,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:32,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:32,874 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:36:32,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash -996137672, now seen corresponding path program 1 times [2022-11-20 10:36:32,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:32,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179543942] [2022-11-20 10:36:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:32,876 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 10:36:32,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:32,877 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:32,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (21)] Waiting until timeout for monitored process [2022-11-20 10:36:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:36,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:36:36,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 10:36:36,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:36,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:36,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179543942] [2022-11-20 10:36:36,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179543942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:36,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:36,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:36:36,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563587902] [2022-11-20 10:36:36,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:36,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:36,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:36,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:36,368 INFO L87 Difference]: Start difference. First operand 6715 states and 9615 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 10:36:37,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:36:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:38,995 INFO L93 Difference]: Finished difference Result 13451 states and 19293 transitions. [2022-11-20 10:36:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:38,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 211 [2022-11-20 10:36:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:39,024 INFO L225 Difference]: With dead ends: 13451 [2022-11-20 10:36:39,024 INFO L226 Difference]: Without dead ends: 6755 [2022-11-20 10:36:39,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 207 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 10:36:39,058 INFO L413 NwaCegarLoop]: 2715 mSDtfsCounter, 18 mSDsluCounter, 8113 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10828 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:39,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10828 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 10:36:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6755 states. [2022-11-20 10:36:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6755 to 6727. [2022-11-20 10:36:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6727 states, 4337 states have (on average 1.2132810698639613) internal successors, (5262), 4532 states have internal predecessors, (5262), 1979 states have call successors, (1979), 412 states have call predecessors, (1979), 408 states have return successors, (2386), 1886 states have call predecessors, (2386), 1976 states have call successors, (2386) [2022-11-20 10:36:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 9627 transitions. [2022-11-20 10:36:40,288 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 9627 transitions. Word has length 211 [2022-11-20 10:36:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:40,289 INFO L495 AbstractCegarLoop]: Abstraction has 6727 states and 9627 transitions. [2022-11-20 10:36:40,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 10:36:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 9627 transitions. [2022-11-20 10:36:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-20 10:36:40,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:40,291 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:40,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:40,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:40,492 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:36:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1383289935, now seen corresponding path program 1 times [2022-11-20 10:36:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:40,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112559293] [2022-11-20 10:36:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:40,494 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 10:36:40,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:40,497 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:40,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (22)] Waiting until timeout for monitored process [2022-11-20 10:36:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:43,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:36:43,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 10:36:43,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:43,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:43,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112559293] [2022-11-20 10:36:43,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112559293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:43,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:43,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575024085] [2022-11-20 10:36:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:43,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:43,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:43,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:43,838 INFO L87 Difference]: Start difference. First operand 6727 states and 9627 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 10:36:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:45,009 INFO L93 Difference]: Finished difference Result 14252 states and 20505 transitions. [2022-11-20 10:36:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:45,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 232 [2022-11-20 10:36:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:45,052 INFO L225 Difference]: With dead ends: 14252 [2022-11-20 10:36:45,052 INFO L226 Difference]: Without dead ends: 7544 [2022-11-20 10:36:45,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 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 10:36:45,101 INFO L413 NwaCegarLoop]: 2943 mSDtfsCounter, 268 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:45,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 5687 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7544 states. [2022-11-20 10:36:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7544 to 6731. [2022-11-20 10:36:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6731 states, 4341 states have (on average 1.2130845427320893) internal successors, (5266), 4536 states have internal predecessors, (5266), 1979 states have call successors, (1979), 412 states have call predecessors, (1979), 408 states have return successors, (2386), 1886 states have call predecessors, (2386), 1976 states have call successors, (2386) [2022-11-20 10:36:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 9631 transitions. [2022-11-20 10:36:46,269 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 9631 transitions. Word has length 232 [2022-11-20 10:36:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:46,270 INFO L495 AbstractCegarLoop]: Abstraction has 6731 states and 9631 transitions. [2022-11-20 10:36:46,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 10:36:46,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 9631 transitions. [2022-11-20 10:36:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 10:36:46,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:46,272 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:46,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (22)] Ended with exit code 0 [2022-11-20 10:36:46,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:46,473 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:36:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash 338783980, now seen corresponding path program 1 times [2022-11-20 10:36:46,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:46,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185812857] [2022-11-20 10:36:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:46,475 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 10:36:46,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:46,476 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:46,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (23)] Waiting until timeout for monitored process [2022-11-20 10:36:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:49,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2903 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:36:49,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 10:36:50,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 10:36:50,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:50,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185812857] [2022-11-20 10:36:50,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185812857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:50,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:36:50,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 10:36:50,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145971269] [2022-11-20 10:36:50,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:50,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:36:50,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:50,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:36:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:36:50,255 INFO L87 Difference]: Start difference. First operand 6731 states and 9631 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 10:36:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:54,914 INFO L93 Difference]: Finished difference Result 16695 states and 24207 transitions. [2022-11-20 10:36:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:54,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 235 [2022-11-20 10:36:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:54,944 INFO L225 Difference]: With dead ends: 16695 [2022-11-20 10:36:54,944 INFO L226 Difference]: Without dead ends: 9983 [2022-11-20 10:36:54,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:54,972 INFO L413 NwaCegarLoop]: 3618 mSDtfsCounter, 1356 mSDsluCounter, 6868 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 10486 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:54,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 10486 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 10:36:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9983 states. [2022-11-20 10:36:56,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9983 to 6767. [2022-11-20 10:36:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6767 states, 4377 states have (on average 1.2140735663696596) internal successors, (5314), 4572 states have internal predecessors, (5314), 1979 states have call successors, (1979), 412 states have call predecessors, (1979), 408 states have return successors, (2386), 1886 states have call predecessors, (2386), 1976 states have call successors, (2386) [2022-11-20 10:36:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 9679 transitions. [2022-11-20 10:36:56,327 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 9679 transitions. Word has length 235 [2022-11-20 10:36:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:56,328 INFO L495 AbstractCegarLoop]: Abstraction has 6767 states and 9679 transitions. [2022-11-20 10:36:56,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 10:36:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 9679 transitions. [2022-11-20 10:36:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 10:36:56,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:56,330 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:56,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:56,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:56,549 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:36:56,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:56,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1121462797, now seen corresponding path program 1 times [2022-11-20 10:36:56,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:56,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664187528] [2022-11-20 10:36:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:56,551 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 10:36:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:56,552 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:36:56,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (24)] Waiting until timeout for monitored process [2022-11-20 10:36:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:00,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2903 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:00,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-20 10:37:00,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:00,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:00,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664187528] [2022-11-20 10:37:00,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664187528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:00,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:00,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:00,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270029562] [2022-11-20 10:37:00,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:00,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:37:00,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:37:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:37:00,355 INFO L87 Difference]: Start difference. First operand 6767 states and 9679 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 10:37:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:01,541 INFO L93 Difference]: Finished difference Result 13517 states and 19369 transitions. [2022-11-20 10:37:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:37:01,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 235 [2022-11-20 10:37:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:01,562 INFO L225 Difference]: With dead ends: 13517 [2022-11-20 10:37:01,562 INFO L226 Difference]: Without dead ends: 6769 [2022-11-20 10:37:01,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:01,590 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 228 mSDsluCounter, 5130 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 7853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:01,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 7853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:01,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2022-11-20 10:37:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6769. [2022-11-20 10:37:02,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6769 states, 4379 states have (on average 1.2139757935601736) internal successors, (5316), 4574 states have internal predecessors, (5316), 1979 states have call successors, (1979), 412 states have call predecessors, (1979), 408 states have return successors, (2386), 1886 states have call predecessors, (2386), 1976 states have call successors, (2386) [2022-11-20 10:37:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 9681 transitions. [2022-11-20 10:37:02,627 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 9681 transitions. Word has length 235 [2022-11-20 10:37:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:02,628 INFO L495 AbstractCegarLoop]: Abstraction has 6769 states and 9681 transitions. [2022-11-20 10:37:02,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 10:37:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 9681 transitions. [2022-11-20 10:37:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-20 10:37:02,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:02,630 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:02,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:02,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:37:02,835 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:37:02,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1372994336, now seen corresponding path program 1 times [2022-11-20 10:37:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:02,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228680107] [2022-11-20 10:37:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:02,838 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 10:37:02,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:02,839 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:37:02,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (25)] Waiting until timeout for monitored process [2022-11-20 10:37:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:37:06,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-20 10:37:06,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 10:37:07,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:07,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228680107] [2022-11-20 10:37:07,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228680107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:07,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:07,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:37:07,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224616624] [2022-11-20 10:37:07,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:07,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:37:07,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:07,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:37:07,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:37:07,279 INFO L87 Difference]: Start difference. First operand 6769 states and 9681 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 4 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 10:37:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:08,727 INFO L93 Difference]: Finished difference Result 13525 states and 19381 transitions. [2022-11-20 10:37:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:37:08,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 4 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 236 [2022-11-20 10:37:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:08,748 INFO L225 Difference]: With dead ends: 13525 [2022-11-20 10:37:08,748 INFO L226 Difference]: Without dead ends: 6775 [2022-11-20 10:37:08,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:37:08,777 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 231 mSDsluCounter, 10260 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 12983 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:08,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 12983 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:37:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2022-11-20 10:37:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 6775. [2022-11-20 10:37:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6775 states, 4385 states have (on average 1.2136830102622578) internal successors, (5322), 4580 states have internal predecessors, (5322), 1979 states have call successors, (1979), 412 states have call predecessors, (1979), 408 states have return successors, (2386), 1886 states have call predecessors, (2386), 1976 states have call successors, (2386) [2022-11-20 10:37:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6775 states to 6775 states and 9687 transitions. [2022-11-20 10:37:09,813 INFO L78 Accepts]: Start accepts. Automaton has 6775 states and 9687 transitions. Word has length 236 [2022-11-20 10:37:09,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:09,814 INFO L495 AbstractCegarLoop]: Abstraction has 6775 states and 9687 transitions. [2022-11-20 10:37:09,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 4 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 10:37:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6775 states and 9687 transitions. [2022-11-20 10:37:09,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 10:37:09,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:09,816 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:09,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:10,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:37:10,031 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:37:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash 442324685, now seen corresponding path program 2 times [2022-11-20 10:37:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:10,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613909666] [2022-11-20 10:37:10,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:37:10,035 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 10:37:10,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:10,037 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:37:10,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (26)] Waiting until timeout for monitored process [2022-11-20 10:42:15,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:42:15,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:42:16,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:42:16,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-20 10:42:17,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:42:17,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:17,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613909666] [2022-11-20 10:42:17,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613909666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:17,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:17,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:42:17,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931281749] [2022-11-20 10:42:17,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:17,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:42:17,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:17,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:42:17,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:42:17,808 INFO L87 Difference]: Start difference. First operand 6775 states and 9687 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-20 10:42:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:19,441 INFO L93 Difference]: Finished difference Result 6783 states and 9693 transitions. [2022-11-20 10:42:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:42:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 239 [2022-11-20 10:42:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:19,459 INFO L225 Difference]: With dead ends: 6783 [2022-11-20 10:42:19,459 INFO L226 Difference]: Without dead ends: 6781 [2022-11-20 10:42:19,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:42:19,464 INFO L413 NwaCegarLoop]: 3488 mSDtfsCounter, 2145 mSDsluCounter, 9705 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 13193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:19,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 13193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:42:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2022-11-20 10:42:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6775. [2022-11-20 10:42:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6775 states, 4385 states have (on average 1.2132269099201825) internal successors, (5320), 4580 states have internal predecessors, (5320), 1979 states have call successors, (1979), 412 states have call predecessors, (1979), 408 states have return successors, (2386), 1886 states have call predecessors, (2386), 1976 states have call successors, (2386) [2022-11-20 10:42:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6775 states to 6775 states and 9685 transitions. [2022-11-20 10:42:20,595 INFO L78 Accepts]: Start accepts. Automaton has 6775 states and 9685 transitions. Word has length 239 [2022-11-20 10:42:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:20,595 INFO L495 AbstractCegarLoop]: Abstraction has 6775 states and 9685 transitions. [2022-11-20 10:42:20,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-20 10:42:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6775 states and 9685 transitions. [2022-11-20 10:42:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-20 10:42:20,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:20,601 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:20,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:20,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:42:20,815 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:42:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1374476956, now seen corresponding path program 1 times [2022-11-20 10:42:20,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:42:20,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971875519] [2022-11-20 10:42:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:20,819 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 10:42:20,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:42:20,822 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:42:20,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (27)] Waiting until timeout for monitored process [2022-11-20 10:42:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:24,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:42:24,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-20 10:42:24,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:42:24,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:24,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971875519] [2022-11-20 10:42:24,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971875519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:24,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:24,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:42:24,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303159197] [2022-11-20 10:42:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:24,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:42:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:42:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:42:24,736 INFO L87 Difference]: Start difference. First operand 6775 states and 9685 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 10:42:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:25,979 INFO L93 Difference]: Finished difference Result 13587 states and 19457 transitions. [2022-11-20 10:42:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:42:25,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 323 [2022-11-20 10:42:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:26,001 INFO L225 Difference]: With dead ends: 13587 [2022-11-20 10:42:26,001 INFO L226 Difference]: Without dead ends: 6831 [2022-11-20 10:42:26,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:42:26,030 INFO L413 NwaCegarLoop]: 2729 mSDtfsCounter, 19 mSDsluCounter, 5417 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8146 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:26,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8146 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:42:26,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6831 states. [2022-11-20 10:42:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6831 to 6803. [2022-11-20 10:42:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6803 states, 4403 states have (on average 1.213263683851919) internal successors, (5342), 4602 states have internal predecessors, (5342), 1987 states have call successors, (1987), 412 states have call predecessors, (1987), 410 states have return successors, (2398), 1894 states have call predecessors, (2398), 1984 states have call successors, (2398) [2022-11-20 10:42:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6803 states to 6803 states and 9727 transitions. [2022-11-20 10:42:27,056 INFO L78 Accepts]: Start accepts. Automaton has 6803 states and 9727 transitions. Word has length 323 [2022-11-20 10:42:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:27,057 INFO L495 AbstractCegarLoop]: Abstraction has 6803 states and 9727 transitions. [2022-11-20 10:42:27,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 10:42:27,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6803 states and 9727 transitions. [2022-11-20 10:42:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-20 10:42:27,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:27,062 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:27,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:27,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:42:27,275 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:42:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1526939749, now seen corresponding path program 1 times [2022-11-20 10:42:27,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:42:27,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635893220] [2022-11-20 10:42:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:27,278 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 10:42:27,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:42:27,279 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:42:27,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (28)] Waiting until timeout for monitored process [2022-11-20 10:42:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:31,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 3195 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:42:31,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 218 proven. 10 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-20 10:42:32,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-20 10:42:33,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:33,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635893220] [2022-11-20 10:42:33,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635893220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:42:33,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:42:33,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 10:42:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786741837] [2022-11-20 10:42:33,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:33,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:42:33,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:42:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:42:33,482 INFO L87 Difference]: Start difference. First operand 6803 states and 9727 transitions. Second operand has 14 states, 14 states have (on average 14.071428571428571) internal successors, (197), 14 states have internal predecessors, (197), 4 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-20 10:42:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:37,104 INFO L93 Difference]: Finished difference Result 13599 states and 19485 transitions. [2022-11-20 10:42:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:42:37,105 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.071428571428571) internal successors, (197), 14 states have internal predecessors, (197), 4 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) Word has length 337 [2022-11-20 10:42:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:37,126 INFO L225 Difference]: With dead ends: 13599 [2022-11-20 10:42:37,126 INFO L226 Difference]: Without dead ends: 6815 [2022-11-20 10:42:37,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:42:37,153 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 474 mSDsluCounter, 24184 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 26907 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:37,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 26907 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 10:42:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2022-11-20 10:42:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 6815. [2022-11-20 10:42:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6815 states, 4415 states have (on average 1.2126840317100793) internal successors, (5354), 4614 states have internal predecessors, (5354), 1987 states have call successors, (1987), 412 states have call predecessors, (1987), 410 states have return successors, (2398), 1894 states have call predecessors, (2398), 1984 states have call successors, (2398) [2022-11-20 10:42:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6815 states to 6815 states and 9739 transitions. [2022-11-20 10:42:38,071 INFO L78 Accepts]: Start accepts. Automaton has 6815 states and 9739 transitions. Word has length 337 [2022-11-20 10:42:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:38,071 INFO L495 AbstractCegarLoop]: Abstraction has 6815 states and 9739 transitions. [2022-11-20 10:42:38,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.071428571428571) internal successors, (197), 14 states have internal predecessors, (197), 4 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-20 10:42:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6815 states and 9739 transitions. [2022-11-20 10:42:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-20 10:42:38,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:38,075 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 10, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:38,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (28)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:42:38,276 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:42:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1497823355, now seen corresponding path program 2 times [2022-11-20 10:42:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:42:38,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5058166] [2022-11-20 10:42:38,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:42:38,279 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 10:42:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:42:38,280 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:42:38,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (29)] Waiting until timeout for monitored process [2022-11-20 10:42:40,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:42:40,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:42:40,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:42:40,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-11-20 10:42:40,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:42:40,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:40,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5058166] [2022-11-20 10:42:40,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5058166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:40,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:40,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:42:40,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692382982] [2022-11-20 10:42:40,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:40,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:42:40,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:42:40,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:42:40,615 INFO L87 Difference]: Start difference. First operand 6815 states and 9739 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 10:42:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:41,818 INFO L93 Difference]: Finished difference Result 6821 states and 9744 transitions. [2022-11-20 10:42:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:42:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 343 [2022-11-20 10:42:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:41,853 INFO L225 Difference]: With dead ends: 6821 [2022-11-20 10:42:41,853 INFO L226 Difference]: Without dead ends: 6819 [2022-11-20 10:42:41,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:42:41,861 INFO L413 NwaCegarLoop]: 4862 mSDtfsCounter, 2717 mSDsluCounter, 12017 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 16879 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:41,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 16879 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:42:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6819 states. [2022-11-20 10:42:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6819 to 6815. [2022-11-20 10:42:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6815 states, 4415 states have (on average 1.2122310305775765) internal successors, (5352), 4614 states have internal predecessors, (5352), 1987 states have call successors, (1987), 412 states have call predecessors, (1987), 410 states have return successors, (2398), 1894 states have call predecessors, (2398), 1984 states have call successors, (2398) [2022-11-20 10:42:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6815 states to 6815 states and 9737 transitions. [2022-11-20 10:42:43,291 INFO L78 Accepts]: Start accepts. Automaton has 6815 states and 9737 transitions. Word has length 343 [2022-11-20 10:42:43,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:43,292 INFO L495 AbstractCegarLoop]: Abstraction has 6815 states and 9737 transitions. [2022-11-20 10:42:43,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 10:42:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6815 states and 9737 transitions. [2022-11-20 10:42:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-20 10:42:43,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:43,300 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 10, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:43,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:43,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:42:43,521 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:42:43,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash -420528116, now seen corresponding path program 1 times [2022-11-20 10:42:43,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:42:43,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447141136] [2022-11-20 10:42:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:43,524 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 10:42:43,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:42:43,525 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:42:43,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (30)] Waiting until timeout for monitored process [2022-11-20 10:42:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:48,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 3413 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:42:48,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 230 proven. 55 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2022-11-20 10:42:49,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2022-11-20 10:42:53,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:53,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447141136] [2022-11-20 10:42:53,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447141136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:42:53,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:42:53,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-20 10:42:53,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628079080] [2022-11-20 10:42:53,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:53,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:42:53,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:42:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2022-11-20 10:42:53,694 INFO L87 Difference]: Start difference. First operand 6815 states and 9737 transitions. Second operand has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 26 states have internal predecessors, (250), 4 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-11-20 10:43:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:07,007 INFO L93 Difference]: Finished difference Result 13635 states and 19529 transitions. [2022-11-20 10:43:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 10:43:07,008 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 26 states have internal predecessors, (250), 4 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 397 [2022-11-20 10:43:07,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:07,036 INFO L225 Difference]: With dead ends: 13635 [2022-11-20 10:43:07,036 INFO L226 Difference]: Without dead ends: 6839 [2022-11-20 10:43:07,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=633, Invalid=1623, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 10:43:07,071 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 249 mSDsluCounter, 34758 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 37481 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:07,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 37481 Invalid, 190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 10:43:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2022-11-20 10:43:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 6839. [2022-11-20 10:43:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6839 states, 4439 states have (on average 1.2110835773822932) internal successors, (5376), 4638 states have internal predecessors, (5376), 1987 states have call successors, (1987), 412 states have call predecessors, (1987), 410 states have return successors, (2398), 1894 states have call predecessors, (2398), 1984 states have call successors, (2398) [2022-11-20 10:43:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6839 states to 6839 states and 9761 transitions. [2022-11-20 10:43:08,156 INFO L78 Accepts]: Start accepts. Automaton has 6839 states and 9761 transitions. Word has length 397 [2022-11-20 10:43:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:08,156 INFO L495 AbstractCegarLoop]: Abstraction has 6839 states and 9761 transitions. [2022-11-20 10:43:08,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.615384615384615) internal successors, (250), 26 states have internal predecessors, (250), 4 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-11-20 10:43:08,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6839 states and 9761 transitions. [2022-11-20 10:43:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-20 10:43:08,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:08,162 INFO L195 NwaCegarLoop]: trace histogram [22, 16, 16, 16, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:08,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:43:08,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:43:08,363 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:43:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -5213572, now seen corresponding path program 1 times [2022-11-20 10:43:08,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:43:08,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978771868] [2022-11-20 10:43:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:08,366 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 10:43:08,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:43:08,367 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:43:08,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (31)] Waiting until timeout for monitored process [2022-11-20 10:43:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:43:13,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 3729 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 10:43:13,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:43:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 315 proven. 253 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-20 10:43:16,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:43:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2022-11-20 10:43:28,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:43:28,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978771868] [2022-11-20 10:43:28,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978771868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:43:28,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:43:28,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-20 10:43:28,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019342513] [2022-11-20 10:43:28,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:43:28,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 10:43:28,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:43:28,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 10:43:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=627, Invalid=1823, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 10:43:28,205 INFO L87 Difference]: Start difference. First operand 6839 states and 9761 transitions. Second operand has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 4 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) [2022-11-20 10:43:42,728 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:44:36,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:36,152 INFO L93 Difference]: Finished difference Result 13707 states and 19625 transitions. [2022-11-20 10:44:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:44:36,154 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 4 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) Word has length 421 [2022-11-20 10:44:36,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:36,187 INFO L225 Difference]: With dead ends: 13707 [2022-11-20 10:44:36,187 INFO L226 Difference]: Without dead ends: 6887 [2022-11-20 10:44:36,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 74.8s TimeCoverageRelationStatistics Valid=2421, Invalid=6699, Unknown=0, NotChecked=0, Total=9120 [2022-11-20 10:44:36,225 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 273 mSDsluCounter, 75588 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 78311 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:36,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 78311 Invalid, 676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-20 10:44:36,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6887 states. [2022-11-20 10:44:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6887 to 6887. [2022-11-20 10:44:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6887 states, 4487 states have (on average 1.208825495876978) internal successors, (5424), 4686 states have internal predecessors, (5424), 1987 states have call successors, (1987), 412 states have call predecessors, (1987), 410 states have return successors, (2398), 1894 states have call predecessors, (2398), 1984 states have call successors, (2398) [2022-11-20 10:44:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 9809 transitions. [2022-11-20 10:44:37,344 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 9809 transitions. Word has length 421 [2022-11-20 10:44:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:37,344 INFO L495 AbstractCegarLoop]: Abstraction has 6887 states and 9809 transitions. [2022-11-20 10:44:37,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 4 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) [2022-11-20 10:44:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 9809 transitions. [2022-11-20 10:44:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-20 10:44:37,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:37,351 INFO L195 NwaCegarLoop]: trace histogram [46, 16, 16, 16, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:37,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:44:37,552 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:44:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1072512764, now seen corresponding path program 2 times [2022-11-20 10:44:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:44:37,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178606059] [2022-11-20 10:44:37,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:44:37,555 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 10:44:37,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:44:37,557 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 10:44:37,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bb292f-a631-4633-bf63-8f059123d23e/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 (32)] Waiting until timeout for monitored process [2022-11-20 10:45:02,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:45:02,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:02,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 10:45:02,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 315 proven. 1081 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-20 10:45:13,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 3 proven. 1081 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2022-11-20 10:45:54,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:45:54,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178606059] [2022-11-20 10:45:54,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178606059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:54,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:45:54,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2022-11-20 10:45:54,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636526206] [2022-11-20 10:45:54,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:54,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-11-20 10:45:54,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:45:54,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-11-20 10:45:54,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2403, Invalid=7103, Unknown=0, NotChecked=0, Total=9506 [2022-11-20 10:45:54,535 INFO L87 Difference]: Start difference. First operand 6887 states and 9809 transitions. Second operand has 98 states, 98 states have (on average 3.183673469387755) internal successors, (312), 98 states have internal predecessors, (312), 4 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) [2022-11-20 10:46:47,554 WARN L233 SmtUtils]: Spent 21.38s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:47:08,836 WARN L233 SmtUtils]: Spent 16.95s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:47:30,042 WARN L233 SmtUtils]: Spent 17.24s on a formula simplification that was a NOOP. DAG size: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:47:50,224 WARN L233 SmtUtils]: Spent 16.26s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)