./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-dec-tulip-de4x5.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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_5c676a4d-b618-47a1-853a-baeeb80320b4/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 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- 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 10:51:49,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:51:49,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:51:49,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:51:49,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:51:49,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:51:49,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:51:49,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:51:49,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:51:49,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:51:49,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:51:49,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:51:49,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:51:49,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:51:49,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:51:49,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:51:49,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:51:49,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:51:49,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:51:49,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:51:49,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:51:49,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:51:49,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:51:49,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:51:49,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:51:49,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:51:49,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:51:49,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:51:49,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:51:49,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:51:49,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:51:49,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:51:49,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:51:49,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:51:49,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:51:49,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:51:49,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:51:49,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:51:49,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:51:49,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:51:49,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:51:49,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:51:49,497 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:51:49,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:51:49,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:51:49,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:51:49,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:51:49,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:51:49,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:51:49,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:51:49,500 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:51:49,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:51:49,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:51:49,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:51:49,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:51:49,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:51:49,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:51:49,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:51:49,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:51:49,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:51:49,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:51:49,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:51:49,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:51:49,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:51:49,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:51:49,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:51:49,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:51:49,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:51:49,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:51:49,505 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:51:49,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:51:49,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:51:49,505 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_5c676a4d-b618-47a1-853a-baeeb80320b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2022-11-20 10:51:49,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:51:49,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:51:49,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:51:49,759 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:51:49,764 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:51:49,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-20 10:51:52,874 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:51:53,654 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:51:53,654 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-20 10:51:53,722 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/data/df10be7d7/6dcab751e14240418c22dae56928a479/FLAG9964d7c1a [2022-11-20 10:51:53,748 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/data/df10be7d7/6dcab751e14240418c22dae56928a479 [2022-11-20 10:51:53,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:51:53,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:51:53,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:51:53,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:51:53,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:51:53,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:53" (1/1) ... [2022-11-20 10:51:53,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bf0495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:53, skipping insertion in model container [2022-11-20 10:51:53,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:53" (1/1) ... [2022-11-20 10:51:53,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:51:53,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:51:54,573 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 10:51:54,583 INFO L158 Benchmark]: Toolchain (without parser) took 826.79ms. Allocated memory is still 148.9MB. Free memory was 106.4MB in the beginning and 84.8MB in the end (delta: 21.7MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2022-11-20 10:51:54,583 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:51:54,585 INFO L158 Benchmark]: CACSL2BoogieTranslator took 822.38ms. Allocated memory is still 148.9MB. Free memory was 106.0MB in the beginning and 84.8MB in the end (delta: 21.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2022-11-20 10:51:54,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 822.38ms. Allocated memory is still 148.9MB. Free memory was 106.0MB in the beginning and 84.8MB in the end (delta: 21.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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_5c676a4d-b618-47a1-853a-baeeb80320b4/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 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- 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 10:51:56,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:51:56,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:51:56,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:51:56,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:51:56,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:51:56,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:51:56,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:51:56,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:51:56,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:51:56,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:51:56,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:51:56,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:51:56,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:51:56,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:51:56,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:51:56,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:51:56,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:51:56,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:51:56,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:51:56,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:51:56,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:51:56,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:51:56,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:51:56,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:51:56,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:51:56,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:51:56,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:51:56,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:51:56,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:51:56,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:51:56,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:51:56,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:51:56,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:51:56,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:51:56,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:51:56,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:51:56,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:51:56,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:51:56,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:51:56,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:51:56,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:51:56,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:51:56,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:51:56,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:51:56,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:51:56,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:51:56,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:51:56,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:51:56,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:51:56,986 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:51:56,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:51:56,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:51:56,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:51:56,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:51:56,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:51:56,988 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:51:56,988 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:51:56,988 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:51:56,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:51:56,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:51:56,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:51:56,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:51:56,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:51:56,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:51:56,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:51:56,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:51:56,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:51:56,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:51:56,990 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:51:56,991 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:51:56,991 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:51:56,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:51:56,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:51:56,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:51:56,992 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_5c676a4d-b618-47a1-853a-baeeb80320b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2022-11-20 10:51:57,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:51:57,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:51:57,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:51:57,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:51:57,429 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:51:57,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-20 10:52:00,522 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:52:01,322 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:52:01,323 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-20 10:52:01,403 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/data/22b63ad92/9e15a30c564141e988d61ed4c08ad727/FLAG4538733e6 [2022-11-20 10:52:01,425 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/data/22b63ad92/9e15a30c564141e988d61ed4c08ad727 [2022-11-20 10:52:01,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:52:01,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:52:01,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:01,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:52:01,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:52:01,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:01" (1/1) ... [2022-11-20 10:52:01,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bcd517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:01, skipping insertion in model container [2022-11-20 10:52:01,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:01" (1/1) ... [2022-11-20 10:52:01,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:52:01,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:52:05,926 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-11-20 10:52:05,931 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-11-20 10:52:05,936 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-11-20 10:52:05,938 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-11-20 10:52:05,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:06,037 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:52:06,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:52:06,656 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-11-20 10:52:06,657 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-11-20 10:52:06,657 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-11-20 10:52:06,658 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-11-20 10:52:06,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:06,716 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:52:07,315 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-11-20 10:52:07,316 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-11-20 10:52:07,316 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-11-20 10:52:07,317 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_5c676a4d-b618-47a1-853a-baeeb80320b4/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-11-20 10:52:07,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:07,693 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:52:07,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07 WrapperNode [2022-11-20 10:52:07,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:07,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:07,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:52:07,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:52:07,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:07,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,171 INFO L138 Inliner]: procedures = 540, calls = 4210, calls flagged for inlining = 232, calls inlined = 215, statements flattened = 8245 [2022-11-20 10:52:08,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:08,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:52:08,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:52:08,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:52:08,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,522 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:52:08,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:52:08,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:52:08,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:52:08,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (1/1) ... [2022-11-20 10:52:08,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:08,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:08,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:52:08,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:52:08,765 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2022-11-20 10:52:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2022-11-20 10:52:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 10:52:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 10:52:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 10:52:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 10:52:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:52:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:52:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2022-11-20 10:52:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2022-11-20 10:52:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2022-11-20 10:52:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2022-11-20 10:52:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-20 10:52:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-20 10:52:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_de4x5_private [2022-11-20 10:52:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_de4x5_private [2022-11-20 10:52:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 10:52:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 10:52:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-11-20 10:52:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-11-20 10:52:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2022-11-20 10:52:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2022-11-20 10:52:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2022-11-20 10:52:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2022-11-20 10:52:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 10:52:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 10:52:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2022-11-20 10:52:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2022-11-20 10:52:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-20 10:52:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-20 10:52:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 10:52:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 10:52:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2022-11-20 10:52:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2022-11-20 10:52:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2022-11-20 10:52:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2022-11-20 10:52:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 10:52:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 10:52:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2022-11-20 10:52:08,773 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2022-11-20 10:52:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-20 10:52:08,773 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-20 10:52:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2022-11-20 10:52:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2022-11-20 10:52:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-20 10:52:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-20 10:52:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 10:52:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 10:52:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2022-11-20 10:52:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2022-11-20 10:52:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-20 10:52:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-20 10:52:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 10:52:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 10:52:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 10:52:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 10:52:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-11-20 10:52:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2022-11-20 10:52:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2022-11-20 10:52:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:52:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-20 10:52:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-20 10:52:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:52:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-20 10:52:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-20 10:52:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:52:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 10:52:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-20 10:52:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-20 10:52:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2022-11-20 10:52:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2022-11-20 10:52:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 10:52:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 10:52:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 10:52:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~C_INT [2022-11-20 10:52:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 10:52:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 10:52:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2022-11-20 10:52:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2022-11-20 10:52:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2022-11-20 10:52:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2022-11-20 10:52:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 10:52:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 10:52:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 10:52:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 10:52:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 10:52:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 10:52:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~C_INT [2022-11-20 10:52:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~C_INT [2022-11-20 10:52:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 10:52:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 10:52:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 10:52:08,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 10:52:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-20 10:52:08,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-20 10:52:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 10:52:08,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 10:52:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2022-11-20 10:52:08,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2022-11-20 10:52:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 10:52:08,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 10:52:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2022-11-20 10:52:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2022-11-20 10:52:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 10:52:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 10:52:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 10:52:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 10:52:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2022-11-20 10:52:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2022-11-20 10:52:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:52:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:52:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-20 10:52:08,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-20 10:52:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2022-11-20 10:52:08,796 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2022-11-20 10:52:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:52:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2022-11-20 10:52:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2022-11-20 10:52:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:52:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2022-11-20 10:52:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2022-11-20 10:52:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 10:52:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 10:52:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 10:52:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 10:52:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:52:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 10:52:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 10:52:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:52:08,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:52:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 10:52:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2022-11-20 10:52:08,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2022-11-20 10:52:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-20 10:52:08,799 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-20 10:52:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2022-11-20 10:52:08,799 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2022-11-20 10:52:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2022-11-20 10:52:08,799 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2022-11-20 10:52:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2022-11-20 10:52:08,799 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2022-11-20 10:52:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 10:52:08,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 10:52:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2022-11-20 10:52:08,800 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2022-11-20 10:52:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 10:52:08,800 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 10:52:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2022-11-20 10:52:08,800 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2022-11-20 10:52:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 10:52:08,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 10:52:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-20 10:52:08,800 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-20 10:52:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 10:52:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2022-11-20 10:52:08,801 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2022-11-20 10:52:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2022-11-20 10:52:08,801 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2022-11-20 10:52:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:52:08,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:52:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2022-11-20 10:52:08,801 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2022-11-20 10:52:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:52:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-20 10:52:08,802 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-20 10:52:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:52:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2022-11-20 10:52:08,802 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2022-11-20 10:52:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:52:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:52:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 10:52:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:52:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:52:08,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:52:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2022-11-20 10:52:08,803 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2022-11-20 10:52:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 10:52:08,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 10:52:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-20 10:52:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-20 10:52:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2022-11-20 10:52:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2022-11-20 10:52:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2022-11-20 10:52:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2022-11-20 10:52:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-20 10:52:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-20 10:52:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2022-11-20 10:52:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2022-11-20 10:52:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2022-11-20 10:52:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2022-11-20 10:52:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2022-11-20 10:52:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2022-11-20 10:52:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2022-11-20 10:52:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2022-11-20 10:52:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2022-11-20 10:52:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2022-11-20 10:52:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 10:52:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 10:52:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2022-11-20 10:52:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2022-11-20 10:52:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 10:52:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 10:52:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2022-11-20 10:52:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2022-11-20 10:52:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-20 10:52:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-20 10:52:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2022-11-20 10:52:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2022-11-20 10:52:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2022-11-20 10:52:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2022-11-20 10:52:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-20 10:52:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-20 10:52:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_pci_remove [2022-11-20 10:52:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_pci_remove [2022-11-20 10:52:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:52:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2022-11-20 10:52:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2022-11-20 10:52:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2022-11-20 10:52:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2022-11-20 10:52:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2022-11-20 10:52:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2022-11-20 10:52:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2022-11-20 10:52:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2022-11-20 10:52:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:52:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2022-11-20 10:52:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2022-11-20 10:52:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-11-20 10:52:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-11-20 10:52:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:52:08,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:52:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 10:52:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:52:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:52:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 10:52:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 10:52:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2022-11-20 10:52:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2022-11-20 10:52:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-20 10:52:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-20 10:52:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2022-11-20 10:52:08,816 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2022-11-20 10:52:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2022-11-20 10:52:08,816 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2022-11-20 10:52:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 10:52:08,817 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 10:52:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 10:52:08,817 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 10:52:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-20 10:52:08,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-20 10:52:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2022-11-20 10:52:08,817 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2022-11-20 10:52:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 10:52:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 10:52:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-20 10:52:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-20 10:52:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2022-11-20 10:52:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2022-11-20 10:52:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2022-11-20 10:52:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2022-11-20 10:52:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2022-11-20 10:52:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2022-11-20 10:52:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-20 10:52:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-20 10:52:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 10:52:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 10:52:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 10:52:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 10:52:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 10:52:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 10:52:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2022-11-20 10:52:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2022-11-20 10:52:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 10:52:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 10:52:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-20 10:52:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-20 10:52:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_73 [2022-11-20 10:52:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_73 [2022-11-20 10:52:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_infoleaf [2022-11-20 10:52:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_infoleaf [2022-11-20 10:52:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2022-11-20 10:52:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2022-11-20 10:52:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 10:52:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 10:52:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 10:52:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 10:52:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:52:08,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:52:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2022-11-20 10:52:08,821 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2022-11-20 10:52:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 10:52:08,821 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 10:52:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2022-11-20 10:52:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2022-11-20 10:52:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 10:52:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 10:52:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2022-11-20 10:52:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2022-11-20 10:52:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2022-11-20 10:52:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2022-11-20 10:52:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2022-11-20 10:52:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2022-11-20 10:52:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2022-11-20 10:52:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2022-11-20 10:52:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 10:52:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 10:52:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2022-11-20 10:52:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2022-11-20 10:52:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2022-11-20 10:52:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2022-11-20 10:52:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2022-11-20 10:52:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2022-11-20 10:52:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2022-11-20 10:52:08,823 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2022-11-20 10:52:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2022-11-20 10:52:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2022-11-20 10:52:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2022-11-20 10:52:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2022-11-20 10:52:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 10:52:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 10:52:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2022-11-20 10:52:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2022-11-20 10:52:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_strncmp [2022-11-20 10:52:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_strncmp [2022-11-20 10:52:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-20 10:52:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-20 10:52:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2022-11-20 10:52:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2022-11-20 10:52:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2022-11-20 10:52:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2022-11-20 10:52:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2022-11-20 10:52:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2022-11-20 10:52:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 10:52:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 10:52:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-20 10:52:10,211 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:52:10,219 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:52:15,125 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:53:44,647 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:53:44,669 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:53:44,670 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-20 10:53:44,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:53:44 BoogieIcfgContainer [2022-11-20 10:53:44,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:53:44,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:53:44,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:53:44,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:53:44,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:52:01" (1/3) ... [2022-11-20 10:53:44,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91c0528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:53:44, skipping insertion in model container [2022-11-20 10:53:44,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:07" (2/3) ... [2022-11-20 10:53:44,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91c0528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:53:44, skipping insertion in model container [2022-11-20 10:53:44,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:53:44" (3/3) ... [2022-11-20 10:53:44,684 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-20 10:53:44,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:53:44,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 10:53:44,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:53:44,819 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;@165b2c0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:53:44,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 10:53:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 3695 states, 2585 states have (on average 1.3470019342359767) internal successors, (3482), 2662 states have internal predecessors, (3482), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) [2022-11-20 10:53:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:53:44,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:44,845 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] [2022-11-20 10:53:44,846 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 10:53:44,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:44,851 INFO L85 PathProgramCache]: Analyzing trace with hash 512926582, now seen corresponding path program 1 times [2022-11-20 10:53:44,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:53:44,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390574587] [2022-11-20 10:53:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:44,870 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 10:53:44,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:53:44,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:44,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:46,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:53:46,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:47,957 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 10:53:47,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:53:47,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:53:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390574587] [2022-11-20 10:53:47,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390574587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:47,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:47,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:53:47,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172145759] [2022-11-20 10:53:47,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:47,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:53:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:53:48,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:53:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:53:48,036 INFO L87 Difference]: Start difference. First operand has 3695 states, 2585 states have (on average 1.3470019342359767) internal successors, (3482), 2662 states have internal predecessors, (3482), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 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 10:53:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:49,005 INFO L93 Difference]: Finished difference Result 7317 states and 10937 transitions. [2022-11-20 10:53:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:53:49,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 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 48 [2022-11-20 10:53:49,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:49,053 INFO L225 Difference]: With dead ends: 7317 [2022-11-20 10:53:49,053 INFO L226 Difference]: Without dead ends: 3633 [2022-11-20 10:53:49,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:53:49,097 INFO L413 NwaCegarLoop]: 5307 mSDtfsCounter, 5281 mSDsluCounter, 10601 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5282 SdHoareTripleChecker+Valid, 15908 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:49,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5282 Valid, 15908 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:53:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-11-20 10:53:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3633. [2022-11-20 10:53:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 2533 states have (on average 1.3418870904066325) internal successors, (3399), 2591 states have internal predecessors, (3399), 947 states have call successors, (947), 151 states have call predecessors, (947), 150 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-20 10:53:49,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5290 transitions. [2022-11-20 10:53:49,452 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5290 transitions. Word has length 48 [2022-11-20 10:53:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:49,452 INFO L495 AbstractCegarLoop]: Abstraction has 3633 states and 5290 transitions. [2022-11-20 10:53:49,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 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 10:53:49,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5290 transitions. [2022-11-20 10:53:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 10:53:49,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:49,457 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] [2022-11-20 10:53:49,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:49,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:49,682 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 10:53:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash 481795984, now seen corresponding path program 1 times [2022-11-20 10:53:49,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:53:49,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150496329] [2022-11-20 10:53:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:49,686 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 10:53:49,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:53:49,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:49,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:51,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:53:51,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:52,631 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 10:53:52,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:53,184 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 10:53:53,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:53:53,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150496329] [2022-11-20 10:53:53,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150496329] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:53,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:53:53,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:53:53,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367710542] [2022-11-20 10:53:53,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:53,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:53:53,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:53:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:53:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:53:53,188 INFO L87 Difference]: Start difference. First operand 3633 states and 5290 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:53:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:53,961 INFO L93 Difference]: Finished difference Result 3639 states and 5295 transitions. [2022-11-20 10:53:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:53:53,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 53 [2022-11-20 10:53:53,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:53,991 INFO L225 Difference]: With dead ends: 3639 [2022-11-20 10:53:53,991 INFO L226 Difference]: Without dead ends: 3637 [2022-11-20 10:53:53,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:53:53,998 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5269 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:53,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5269 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:53:54,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2022-11-20 10:53:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3637. [2022-11-20 10:53:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3637 states, 2536 states have (on average 1.3414826498422714) internal successors, (3402), 2594 states have internal predecessors, (3402), 947 states have call successors, (947), 152 states have call predecessors, (947), 151 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-20 10:53:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5293 transitions. [2022-11-20 10:53:54,338 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5293 transitions. Word has length 53 [2022-11-20 10:53:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:54,339 INFO L495 AbstractCegarLoop]: Abstraction has 3637 states and 5293 transitions. [2022-11-20 10:53:54,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:53:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5293 transitions. [2022-11-20 10:53:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 10:53:54,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:54,349 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, 1, 1, 1] [2022-11-20 10:53:54,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:54,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:54,572 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 10:53:54,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash -833464525, now seen corresponding path program 1 times [2022-11-20 10:53:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:53:54,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496823590] [2022-11-20 10:53:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:54,576 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 10:53:54,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:53:54,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:54,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:53:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:56,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:53:56,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:53:58,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:53:59,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:53:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496823590] [2022-11-20 10:53:59,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496823590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:59,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:59,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 18 [2022-11-20 10:53:59,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904736632] [2022-11-20 10:53:59,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:59,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:53:59,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:53:59,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:53:59,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:53:59,669 INFO L87 Difference]: Start difference. First operand 3637 states and 5293 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-20 10:54:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:07,256 INFO L93 Difference]: Finished difference Result 3687 states and 5357 transitions. [2022-11-20 10:54:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:54:07,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 65 [2022-11-20 10:54:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:07,280 INFO L225 Difference]: With dead ends: 3687 [2022-11-20 10:54:07,281 INFO L226 Difference]: Without dead ends: 3651 [2022-11-20 10:54:07,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:54:07,285 INFO L413 NwaCegarLoop]: 5251 mSDtfsCounter, 56 mSDsluCounter, 83869 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 89120 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:07,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 89120 Invalid, 815 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [25 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 10:54:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2022-11-20 10:54:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 3647. [2022-11-20 10:54:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 2544 states have (on average 1.3404088050314464) internal successors, (3410), 2602 states have internal predecessors, (3410), 949 states have call successors, (949), 152 states have call predecessors, (949), 151 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-11-20 10:54:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 5305 transitions. [2022-11-20 10:54:07,598 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 5305 transitions. Word has length 65 [2022-11-20 10:54:07,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:07,600 INFO L495 AbstractCegarLoop]: Abstraction has 3647 states and 5305 transitions. [2022-11-20 10:54:07,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-20 10:54:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 5305 transitions. [2022-11-20 10:54:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 10:54:07,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:07,605 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] [2022-11-20 10:54:07,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:07,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:07,829 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 10:54:07,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:07,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2033501322, now seen corresponding path program 1 times [2022-11-20 10:54:07,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:07,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803512023] [2022-11-20 10:54:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:07,832 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 10:54:07,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:07,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:07,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:09,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:09,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:10,376 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 10:54:10,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:10,854 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 10:54:10,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:10,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803512023] [2022-11-20 10:54:10,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803512023] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:10,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:10,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:10,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129001926] [2022-11-20 10:54:10,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:10,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:10,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:10,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:10,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:10,856 INFO L87 Difference]: Start difference. First operand 3647 states and 5305 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:11,544 INFO L93 Difference]: Finished difference Result 3653 states and 5310 transitions. [2022-11-20 10:54:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:11,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 58 [2022-11-20 10:54:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:11,568 INFO L225 Difference]: With dead ends: 3653 [2022-11-20 10:54:11,569 INFO L226 Difference]: Without dead ends: 3651 [2022-11-20 10:54:11,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:11,574 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5268 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:11,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5268 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:54:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2022-11-20 10:54:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 3651. [2022-11-20 10:54:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 2547 states have (on average 1.3400078523753436) internal successors, (3413), 2605 states have internal predecessors, (3413), 949 states have call successors, (949), 153 states have call predecessors, (949), 152 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-11-20 10:54:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5308 transitions. [2022-11-20 10:54:11,889 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5308 transitions. Word has length 58 [2022-11-20 10:54:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:11,889 INFO L495 AbstractCegarLoop]: Abstraction has 3651 states and 5308 transitions. [2022-11-20 10:54:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5308 transitions. [2022-11-20 10:54:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 10:54:11,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:11,891 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] [2022-11-20 10:54:11,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:12,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:12,104 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 10:54:12,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2019047184, now seen corresponding path program 1 times [2022-11-20 10:54:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:12,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927844998] [2022-11-20 10:54:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:12,107 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 10:54:12,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:12,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:12,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:13,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:13,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:14,913 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 10:54:14,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:15,410 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 10:54:15,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927844998] [2022-11-20 10:54:15,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927844998] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:15,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:15,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377322143] [2022-11-20 10:54:15,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:15,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:15,412 INFO L87 Difference]: Start difference. First operand 3651 states and 5308 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:16,138 INFO L93 Difference]: Finished difference Result 3657 states and 5313 transitions. [2022-11-20 10:54:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:16,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 63 [2022-11-20 10:54:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:16,165 INFO L225 Difference]: With dead ends: 3657 [2022-11-20 10:54:16,165 INFO L226 Difference]: Without dead ends: 3655 [2022-11-20 10:54:16,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:16,170 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5267 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:16,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5267 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2022-11-20 10:54:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3655. [2022-11-20 10:54:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2550 states have (on average 1.339607843137255) internal successors, (3416), 2608 states have internal predecessors, (3416), 949 states have call successors, (949), 154 states have call predecessors, (949), 153 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-11-20 10:54:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5311 transitions. [2022-11-20 10:54:16,526 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5311 transitions. Word has length 63 [2022-11-20 10:54:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:16,527 INFO L495 AbstractCegarLoop]: Abstraction has 3655 states and 5311 transitions. [2022-11-20 10:54:16,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5311 transitions. [2022-11-20 10:54:16,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 10:54:16,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:16,529 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] [2022-11-20 10:54:16,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:16,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:16,752 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 10:54:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash -174619786, now seen corresponding path program 1 times [2022-11-20 10:54:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:16,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440426273] [2022-11-20 10:54:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:16,755 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 10:54:16,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:16,756 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:16,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:18,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:18,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:19,387 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 10:54:19,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:19,852 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 10:54:19,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:19,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440426273] [2022-11-20 10:54:19,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440426273] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:19,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:19,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030041003] [2022-11-20 10:54:19,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:19,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:19,855 INFO L87 Difference]: Start difference. First operand 3655 states and 5311 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:20,556 INFO L93 Difference]: Finished difference Result 3661 states and 5316 transitions. [2022-11-20 10:54:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 68 [2022-11-20 10:54:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:20,579 INFO L225 Difference]: With dead ends: 3661 [2022-11-20 10:54:20,580 INFO L226 Difference]: Without dead ends: 3659 [2022-11-20 10:54:20,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:20,586 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5266 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:20,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5266 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2022-11-20 10:54:21,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3659. [2022-11-20 10:54:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2553 states have (on average 1.3392087739913827) internal successors, (3419), 2611 states have internal predecessors, (3419), 949 states have call successors, (949), 155 states have call predecessors, (949), 154 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-11-20 10:54:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5314 transitions. [2022-11-20 10:54:21,078 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5314 transitions. Word has length 68 [2022-11-20 10:54:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:21,078 INFO L495 AbstractCegarLoop]: Abstraction has 3659 states and 5314 transitions. [2022-11-20 10:54:21,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5314 transitions. [2022-11-20 10:54:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 10:54:21,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:21,081 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] [2022-11-20 10:54:21,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:21,304 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 10:54:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1177755280, now seen corresponding path program 1 times [2022-11-20 10:54:21,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:21,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418786516] [2022-11-20 10:54:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:21,306 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 10:54:21,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:21,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:21,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:23,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:24,259 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 10:54:24,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:24,794 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 10:54:24,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:24,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418786516] [2022-11-20 10:54:24,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418786516] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:24,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:24,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091828703] [2022-11-20 10:54:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:24,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:24,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:24,796 INFO L87 Difference]: Start difference. First operand 3659 states and 5314 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:25,532 INFO L93 Difference]: Finished difference Result 3665 states and 5319 transitions. [2022-11-20 10:54:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:25,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 73 [2022-11-20 10:54:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:25,556 INFO L225 Difference]: With dead ends: 3665 [2022-11-20 10:54:25,557 INFO L226 Difference]: Without dead ends: 3663 [2022-11-20 10:54:25,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:25,561 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5265 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:25,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5265 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:54:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2022-11-20 10:54:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3663. [2022-11-20 10:54:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 2556 states have (on average 1.338810641627543) internal successors, (3422), 2614 states have internal predecessors, (3422), 949 states have call successors, (949), 156 states have call predecessors, (949), 155 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-11-20 10:54:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 5317 transitions. [2022-11-20 10:54:26,060 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 5317 transitions. Word has length 73 [2022-11-20 10:54:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:26,060 INFO L495 AbstractCegarLoop]: Abstraction has 3663 states and 5317 transitions. [2022-11-20 10:54:26,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:26,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 5317 transitions. [2022-11-20 10:54:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 10:54:26,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:26,062 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] [2022-11-20 10:54:26,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:26,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:26,276 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 10:54:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash -904168586, now seen corresponding path program 1 times [2022-11-20 10:54:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:26,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642383955] [2022-11-20 10:54:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:26,278 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 10:54:26,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:26,279 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:26,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:28,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:29,247 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 10:54:29,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:29,780 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 10:54:29,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642383955] [2022-11-20 10:54:29,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642383955] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:29,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:29,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125351547] [2022-11-20 10:54:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:29,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:29,782 INFO L87 Difference]: Start difference. First operand 3663 states and 5317 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:30,483 INFO L93 Difference]: Finished difference Result 3669 states and 5322 transitions. [2022-11-20 10:54:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:30,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 78 [2022-11-20 10:54:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:30,504 INFO L225 Difference]: With dead ends: 3669 [2022-11-20 10:54:30,505 INFO L226 Difference]: Without dead ends: 3667 [2022-11-20 10:54:30,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:30,509 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:30,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5264 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:54:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2022-11-20 10:54:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3667. [2022-11-20 10:54:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 2559 states have (on average 1.3384134427510745) internal successors, (3425), 2617 states have internal predecessors, (3425), 949 states have call successors, (949), 157 states have call predecessors, (949), 156 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-11-20 10:54:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5320 transitions. [2022-11-20 10:54:31,121 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5320 transitions. Word has length 78 [2022-11-20 10:54:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:31,122 INFO L495 AbstractCegarLoop]: Abstraction has 3667 states and 5320 transitions. [2022-11-20 10:54:31,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5320 transitions. [2022-11-20 10:54:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 10:54:31,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:31,124 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] [2022-11-20 10:54:31,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:31,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:31,350 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 10:54:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:31,350 INFO L85 PathProgramCache]: Analyzing trace with hash -39561712, now seen corresponding path program 1 times [2022-11-20 10:54:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:31,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266201968] [2022-11-20 10:54:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:31,352 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 10:54:31,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:31,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:31,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:33,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:34,557 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 10:54:34,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:35,151 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 10:54:35,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:35,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266201968] [2022-11-20 10:54:35,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266201968] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:35,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:35,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076139424] [2022-11-20 10:54:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:35,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:35,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:35,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:35,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:35,154 INFO L87 Difference]: Start difference. First operand 3667 states and 5320 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:36,076 INFO L93 Difference]: Finished difference Result 3960 states and 5677 transitions. [2022-11-20 10:54:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:36,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 83 [2022-11-20 10:54:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:36,096 INFO L225 Difference]: With dead ends: 3960 [2022-11-20 10:54:36,096 INFO L226 Difference]: Without dead ends: 3958 [2022-11-20 10:54:36,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:36,101 INFO L413 NwaCegarLoop]: 5395 mSDtfsCounter, 4975 mSDsluCounter, 11401 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 16796 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:36,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4980 Valid, 16796 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:54:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2022-11-20 10:54:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3952. [2022-11-20 10:54:36,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 2755 states have (on average 1.3295825771324863) internal successors, (3663), 2820 states have internal predecessors, (3663), 1005 states have call successors, (1005), 193 states have call predecessors, (1005), 189 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-11-20 10:54:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5671 transitions. [2022-11-20 10:54:36,732 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5671 transitions. Word has length 83 [2022-11-20 10:54:36,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:36,732 INFO L495 AbstractCegarLoop]: Abstraction has 3952 states and 5671 transitions. [2022-11-20 10:54:36,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:36,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5671 transitions. [2022-11-20 10:54:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 10:54:36,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:36,734 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] [2022-11-20 10:54:36,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:36,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:36,955 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 10:54:36,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash -965008522, now seen corresponding path program 1 times [2022-11-20 10:54:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:36,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886191581] [2022-11-20 10:54:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:36,959 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 10:54:36,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:36,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:37,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:38,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:38,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:39,979 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 10:54:39,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:40,573 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 10:54:40,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:40,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886191581] [2022-11-20 10:54:40,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886191581] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:40,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:40,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:40,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19399895] [2022-11-20 10:54:40,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:40,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:40,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:40,576 INFO L87 Difference]: Start difference. First operand 3952 states and 5671 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:41,408 INFO L93 Difference]: Finished difference Result 3958 states and 5676 transitions. [2022-11-20 10:54:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:41,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 88 [2022-11-20 10:54:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:41,426 INFO L225 Difference]: With dead ends: 3958 [2022-11-20 10:54:41,427 INFO L226 Difference]: Without dead ends: 3956 [2022-11-20 10:54:41,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:41,431 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5262 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:41,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5262 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2022-11-20 10:54:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3956. [2022-11-20 10:54:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 2758 states have (on average 1.3292240754169689) internal successors, (3666), 2823 states have internal predecessors, (3666), 1005 states have call successors, (1005), 194 states have call predecessors, (1005), 190 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-11-20 10:54:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 5674 transitions. [2022-11-20 10:54:41,956 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 5674 transitions. Word has length 88 [2022-11-20 10:54:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:41,956 INFO L495 AbstractCegarLoop]: Abstraction has 3956 states and 5674 transitions. [2022-11-20 10:54:41,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 5674 transitions. [2022-11-20 10:54:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 10:54:41,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:41,958 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] [2022-11-20 10:54:41,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:42,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:42,186 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 10:54:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:42,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1828201072, now seen corresponding path program 1 times [2022-11-20 10:54:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:42,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025865904] [2022-11-20 10:54:42,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:42,189 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 10:54:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:42,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:42,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:44,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:44,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:45,628 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 10:54:45,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:46,202 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 10:54:46,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:46,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025865904] [2022-11-20 10:54:46,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025865904] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:46,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:46,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718562728] [2022-11-20 10:54:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:46,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:46,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:46,205 INFO L87 Difference]: Start difference. First operand 3956 states and 5674 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:47,017 INFO L93 Difference]: Finished difference Result 3962 states and 5679 transitions. [2022-11-20 10:54:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 93 [2022-11-20 10:54:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:47,035 INFO L225 Difference]: With dead ends: 3962 [2022-11-20 10:54:47,035 INFO L226 Difference]: Without dead ends: 3960 [2022-11-20 10:54:47,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:47,039 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5261 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:47,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5261 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3960 states. [2022-11-20 10:54:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3960 to 3960. [2022-11-20 10:54:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3960 states, 2761 states have (on average 1.3288663527707352) internal successors, (3669), 2826 states have internal predecessors, (3669), 1005 states have call successors, (1005), 195 states have call predecessors, (1005), 191 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-11-20 10:54:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 5677 transitions. [2022-11-20 10:54:47,536 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 5677 transitions. Word has length 93 [2022-11-20 10:54:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:47,537 INFO L495 AbstractCegarLoop]: Abstraction has 3960 states and 5677 transitions. [2022-11-20 10:54:47,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 5677 transitions. [2022-11-20 10:54:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 10:54:47,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:47,539 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] [2022-11-20 10:54:47,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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)] Ended with exit code 0 [2022-11-20 10:54:47,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:47,752 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 10:54:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1339718518, now seen corresponding path program 1 times [2022-11-20 10:54:47,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:47,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775797308] [2022-11-20 10:54:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:47,755 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 10:54:47,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:47,757 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:47,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:49,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:49,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:51,134 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 10:54:51,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:51,765 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 10:54:51,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:51,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775797308] [2022-11-20 10:54:51,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775797308] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:51,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:51,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:51,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662897623] [2022-11-20 10:54:51,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:51,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:51,768 INFO L87 Difference]: Start difference. First operand 3960 states and 5677 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:52,600 INFO L93 Difference]: Finished difference Result 3966 states and 5682 transitions. [2022-11-20 10:54:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:52,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 98 [2022-11-20 10:54:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:52,623 INFO L225 Difference]: With dead ends: 3966 [2022-11-20 10:54:52,623 INFO L226 Difference]: Without dead ends: 3964 [2022-11-20 10:54:52,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:52,627 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5260 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:52,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5260 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2022-11-20 10:54:53,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 3964. [2022-11-20 10:54:53,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3964 states, 2764 states have (on average 1.3285094066570189) internal successors, (3672), 2829 states have internal predecessors, (3672), 1005 states have call successors, (1005), 196 states have call predecessors, (1005), 192 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-11-20 10:54:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 5680 transitions. [2022-11-20 10:54:53,300 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 5680 transitions. Word has length 98 [2022-11-20 10:54:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:53,300 INFO L495 AbstractCegarLoop]: Abstraction has 3964 states and 5680 transitions. [2022-11-20 10:54:53,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 5680 transitions. [2022-11-20 10:54:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 10:54:53,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:53,302 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] [2022-11-20 10:54:53,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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)] Ended with exit code 0 [2022-11-20 10:54:53,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:53,512 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 10:54:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 934917392, now seen corresponding path program 1 times [2022-11-20 10:54:53,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:53,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054504031] [2022-11-20 10:54:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:53,514 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 10:54:53,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:53,515 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:53,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:55,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:55,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:56,837 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 10:54:56,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:57,502 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 10:54:57,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:54:57,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054504031] [2022-11-20 10:54:57,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054504031] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:57,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:57,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:54:57,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142935547] [2022-11-20 10:54:57,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:57,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:57,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:54:57,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:57,505 INFO L87 Difference]: Start difference. First operand 3964 states and 5680 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:58,367 INFO L93 Difference]: Finished difference Result 3970 states and 5685 transitions. [2022-11-20 10:54:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:54:58,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 103 [2022-11-20 10:54:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:58,383 INFO L225 Difference]: With dead ends: 3970 [2022-11-20 10:54:58,383 INFO L226 Difference]: Without dead ends: 3966 [2022-11-20 10:54:58,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:58,385 INFO L413 NwaCegarLoop]: 5287 mSDtfsCounter, 5258 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5259 SdHoareTripleChecker+Valid, 15841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:58,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5259 Valid, 15841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:58,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3966 states. [2022-11-20 10:54:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3966 to 3966. [2022-11-20 10:54:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3966 states, 2766 states have (on average 1.3279103398409255) internal successors, (3673), 2830 states have internal predecessors, (3673), 1005 states have call successors, (1005), 197 states have call predecessors, (1005), 192 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-11-20 10:54:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3966 states to 3966 states and 5681 transitions. [2022-11-20 10:54:59,051 INFO L78 Accepts]: Start accepts. Automaton has 3966 states and 5681 transitions. Word has length 103 [2022-11-20 10:54:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:59,051 INFO L495 AbstractCegarLoop]: Abstraction has 3966 states and 5681 transitions. [2022-11-20 10:54:59,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 10:54:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3966 states and 5681 transitions. [2022-11-20 10:54:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 10:54:59,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:59,054 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 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 10:54:59,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:59,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:59,272 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 10:54:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1369603210, now seen corresponding path program 1 times [2022-11-20 10:54:59,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:54:59,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633114312] [2022-11-20 10:54:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:59,274 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 10:54:59,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:54:59,275 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:54:59,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:01,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:55:01,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-20 10:55:02,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-20 10:55:03,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:55:03,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633114312] [2022-11-20 10:55:03,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633114312] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:03,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:55:03,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:55:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613271270] [2022-11-20 10:55:03,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:03,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:55:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:55:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:55:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:55:03,282 INFO L87 Difference]: Start difference. First operand 3966 states and 5681 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:55:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:04,088 INFO L93 Difference]: Finished difference Result 3966 states and 5681 transitions. [2022-11-20 10:55:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:55:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108 [2022-11-20 10:55:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:04,106 INFO L225 Difference]: With dead ends: 3966 [2022-11-20 10:55:04,106 INFO L226 Difference]: Without dead ends: 3863 [2022-11-20 10:55:04,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:55:04,110 INFO L413 NwaCegarLoop]: 5285 mSDtfsCounter, 5254 mSDsluCounter, 10553 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5254 SdHoareTripleChecker+Valid, 15838 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:04,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5254 Valid, 15838 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:55:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2022-11-20 10:55:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3863. [2022-11-20 10:55:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 2700 states have (on average 1.334814814814815) internal successors, (3604), 2762 states have internal predecessors, (3604), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-11-20 10:55:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5567 transitions. [2022-11-20 10:55:04,836 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5567 transitions. Word has length 108 [2022-11-20 10:55:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:04,836 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5567 transitions. [2022-11-20 10:55:04,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:55:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5567 transitions. [2022-11-20 10:55:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-20 10:55:04,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:04,848 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 10:55:04,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:05,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:05,073 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 10:55:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash -539631427, now seen corresponding path program 1 times [2022-11-20 10:55:05,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:55:05,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074833906] [2022-11-20 10:55:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:05,076 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 10:55:05,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:55:05,078 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:05,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:07,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:55:07,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 106 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 10:55:08,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-20 10:55:09,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:55:09,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074833906] [2022-11-20 10:55:09,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074833906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:09,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:55:09,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-20 10:55:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381008023] [2022-11-20 10:55:09,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:09,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:55:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:55:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:55:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:55:09,351 INFO L87 Difference]: Start difference. First operand 3863 states and 5567 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-20 10:55:13,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:13,080 INFO L93 Difference]: Finished difference Result 7715 states and 11118 transitions. [2022-11-20 10:55:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:55:13,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) Word has length 178 [2022-11-20 10:55:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:13,100 INFO L225 Difference]: With dead ends: 7715 [2022-11-20 10:55:13,101 INFO L226 Difference]: Without dead ends: 3865 [2022-11-20 10:55:13,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:55:13,128 INFO L413 NwaCegarLoop]: 5192 mSDtfsCounter, 733 mSDsluCounter, 35367 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 40559 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:13,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 40559 Invalid, 299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 10:55:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2022-11-20 10:55:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3863. [2022-11-20 10:55:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 2700 states have (on average 1.3344444444444445) internal successors, (3603), 2761 states have internal predecessors, (3603), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-11-20 10:55:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5566 transitions. [2022-11-20 10:55:13,934 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5566 transitions. Word has length 178 [2022-11-20 10:55:13,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:13,935 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5566 transitions. [2022-11-20 10:55:13,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-20 10:55:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5566 transitions. [2022-11-20 10:55:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-20 10:55:13,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:13,947 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 10:55:13,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:14,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:14,168 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 10:55:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1241769498, now seen corresponding path program 1 times [2022-11-20 10:55:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:55:14,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805464549] [2022-11-20 10:55:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:14,172 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 10:55:14,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:55:14,172 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:14,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:16,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:55:16,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-20 10:55:17,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:55:17,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:55:17,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805464549] [2022-11-20 10:55:17,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805464549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:17,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:17,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:55:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304262850] [2022-11-20 10:55:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:17,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:55:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:17,716 INFO L87 Difference]: Start difference. First operand 3863 states and 5566 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 10:55:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:18,463 INFO L93 Difference]: Finished difference Result 7708 states and 11107 transitions. [2022-11-20 10:55:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:18,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 182 [2022-11-20 10:55:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:18,475 INFO L225 Difference]: With dead ends: 7708 [2022-11-20 10:55:18,475 INFO L226 Difference]: Without dead ends: 3862 [2022-11-20 10:55:18,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 10:55:18,488 INFO L413 NwaCegarLoop]: 5214 mSDtfsCounter, 5168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5168 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:18,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5168 Valid, 5214 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:55:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2022-11-20 10:55:19,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 3862. [2022-11-20 10:55:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 2699 states have (on average 1.333827343460541) internal successors, (3600), 2760 states have internal predecessors, (3600), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-11-20 10:55:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 5563 transitions. [2022-11-20 10:55:19,216 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 5563 transitions. Word has length 182 [2022-11-20 10:55:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:19,217 INFO L495 AbstractCegarLoop]: Abstraction has 3862 states and 5563 transitions. [2022-11-20 10:55:19,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 10:55:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 5563 transitions. [2022-11-20 10:55:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-20 10:55:19,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:19,226 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-20 10:55:19,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:19,440 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 10:55:19,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1148822958, now seen corresponding path program 1 times [2022-11-20 10:55:19,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:55:19,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020773498] [2022-11-20 10:55:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:19,442 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 10:55:19,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:55:19,444 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:19,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:21,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:55:21,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-20 10:55:22,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:55:22,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:55:22,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020773498] [2022-11-20 10:55:22,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020773498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:22,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:22,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:55:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805321320] [2022-11-20 10:55:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:55:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:55:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:55:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:55:22,903 INFO L87 Difference]: Start difference. First operand 3862 states and 5563 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-20 10:55:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:29,124 INFO L93 Difference]: Finished difference Result 8352 states and 12073 transitions. [2022-11-20 10:55:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:55:29,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 183 [2022-11-20 10:55:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:29,140 INFO L225 Difference]: With dead ends: 8352 [2022-11-20 10:55:29,140 INFO L226 Difference]: Without dead ends: 4506 [2022-11-20 10:55:29,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:55:29,161 INFO L413 NwaCegarLoop]: 6134 mSDtfsCounter, 2088 mSDsluCounter, 58776 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 64910 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:29,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 64910 Invalid, 921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [416 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 10:55:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2022-11-20 10:55:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 3870. [2022-11-20 10:55:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2705 states have (on average 1.333086876155268) internal successors, (3606), 2766 states have internal predecessors, (3606), 983 states have call successors, (983), 183 states have call predecessors, (983), 180 states have return successors, (984), 963 states have call predecessors, (984), 983 states have call successors, (984) [2022-11-20 10:55:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5573 transitions. [2022-11-20 10:55:29,983 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5573 transitions. Word has length 183 [2022-11-20 10:55:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:29,984 INFO L495 AbstractCegarLoop]: Abstraction has 3870 states and 5573 transitions. [2022-11-20 10:55:29,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-20 10:55:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5573 transitions. [2022-11-20 10:55:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 10:55:29,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:29,994 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1] [2022-11-20 10:55:30,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:30,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:30,208 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 10:55:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:30,209 INFO L85 PathProgramCache]: Analyzing trace with hash -538660880, now seen corresponding path program 1 times [2022-11-20 10:55:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:55:30,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58880536] [2022-11-20 10:55:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:30,211 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 10:55:30,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:55:30,216 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:30,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:32,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:55:32,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-20 10:55:33,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:55:33,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:55:33,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58880536] [2022-11-20 10:55:33,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58880536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:33,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:33,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:55:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902269953] [2022-11-20 10:55:33,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:33,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:55:33,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:55:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:55:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:55:33,664 INFO L87 Difference]: Start difference. First operand 3870 states and 5573 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-20 10:55:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:40,591 INFO L93 Difference]: Finished difference Result 9005 states and 13050 transitions. [2022-11-20 10:55:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:55:40,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 186 [2022-11-20 10:55:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:40,621 INFO L225 Difference]: With dead ends: 9005 [2022-11-20 10:55:40,621 INFO L226 Difference]: Without dead ends: 5151 [2022-11-20 10:55:40,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:55:40,636 INFO L413 NwaCegarLoop]: 6260 mSDtfsCounter, 2094 mSDsluCounter, 59912 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 66172 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:40,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 66172 Invalid, 961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 10:55:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2022-11-20 10:55:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 3870. [2022-11-20 10:55:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2705 states have (on average 1.333086876155268) internal successors, (3606), 2766 states have internal predecessors, (3606), 983 states have call successors, (983), 183 states have call predecessors, (983), 180 states have return successors, (984), 963 states have call predecessors, (984), 983 states have call successors, (984) [2022-11-20 10:55:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5573 transitions. [2022-11-20 10:55:41,597 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5573 transitions. Word has length 186 [2022-11-20 10:55:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:41,598 INFO L495 AbstractCegarLoop]: Abstraction has 3870 states and 5573 transitions. [2022-11-20 10:55:41,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-20 10:55:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5573 transitions. [2022-11-20 10:55:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-20 10:55:41,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:41,606 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 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, 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 10:55:41,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:41,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:41,828 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 10:55:41,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:41,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1054903163, now seen corresponding path program 1 times [2022-11-20 10:55:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:55:41,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607891330] [2022-11-20 10:55:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:41,830 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 10:55:41,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:55:41,831 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:41,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:44,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:55:44,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-20 10:55:45,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:55:45,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:55:45,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607891330] [2022-11-20 10:55:45,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607891330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:45,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:45,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:55:45,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806585974] [2022-11-20 10:55:45,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:45,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:55:45,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:55:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:55:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:55:45,508 INFO L87 Difference]: Start difference. First operand 3870 states and 5573 transitions. Second operand has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-20 10:55:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:52,439 INFO L93 Difference]: Finished difference Result 8374 states and 12101 transitions. [2022-11-20 10:55:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:55:52,439 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 211 [2022-11-20 10:55:52,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:52,453 INFO L225 Difference]: With dead ends: 8374 [2022-11-20 10:55:52,453 INFO L226 Difference]: Without dead ends: 4520 [2022-11-20 10:55:52,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:55:52,465 INFO L413 NwaCegarLoop]: 6142 mSDtfsCounter, 2098 mSDsluCounter, 64929 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 71071 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:52,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 71071 Invalid, 1016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [423 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 10:55:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-11-20 10:55:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 3872. [2022-11-20 10:55:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 2706 states have (on average 1.3329637841832964) internal successors, (3607), 2767 states have internal predecessors, (3607), 984 states have call successors, (984), 183 states have call predecessors, (984), 180 states have return successors, (985), 964 states have call predecessors, (985), 984 states have call successors, (985) [2022-11-20 10:55:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 5576 transitions. [2022-11-20 10:55:53,145 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 5576 transitions. Word has length 211 [2022-11-20 10:55:53,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:53,145 INFO L495 AbstractCegarLoop]: Abstraction has 3872 states and 5576 transitions. [2022-11-20 10:55:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-20 10:55:53,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 5576 transitions. [2022-11-20 10:55:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 10:55:53,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:53,155 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:53,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:53,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:53,380 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 10:55:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1580776597, now seen corresponding path program 1 times [2022-11-20 10:55:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:55:53,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344168077] [2022-11-20 10:55:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:53,383 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 10:55:53,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:55:53,384 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:53,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:55,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:55:55,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-20 10:55:56,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:55:56,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:55:56,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344168077] [2022-11-20 10:55:56,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344168077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:56,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:56,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142771400] [2022-11-20 10:55:56,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:55:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:55:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:55:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:55:56,206 INFO L87 Difference]: Start difference. First operand 3872 states and 5576 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 10:55:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:57,412 INFO L93 Difference]: Finished difference Result 7766 states and 11181 transitions. [2022-11-20 10:55:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:55:57,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 235 [2022-11-20 10:55:57,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:57,426 INFO L225 Difference]: With dead ends: 7766 [2022-11-20 10:55:57,426 INFO L226 Difference]: Without dead ends: 3911 [2022-11-20 10:55:57,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:55:57,443 INFO L413 NwaCegarLoop]: 5245 mSDtfsCounter, 67 mSDsluCounter, 15668 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 20913 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:57,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 20913 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:55:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2022-11-20 10:55:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3875. [2022-11-20 10:55:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3875 states, 2709 states have (on average 1.3325950535252862) internal successors, (3610), 2770 states have internal predecessors, (3610), 984 states have call successors, (984), 183 states have call predecessors, (984), 180 states have return successors, (985), 964 states have call predecessors, (985), 984 states have call successors, (985) [2022-11-20 10:55:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 5579 transitions. [2022-11-20 10:55:58,238 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 5579 transitions. Word has length 235 [2022-11-20 10:55:58,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:58,238 INFO L495 AbstractCegarLoop]: Abstraction has 3875 states and 5579 transitions. [2022-11-20 10:55:58,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 10:55:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 5579 transitions. [2022-11-20 10:55:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 10:55:58,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:58,246 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:55:58,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:58,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:58,468 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 10:55:58,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash -387690262, now seen corresponding path program 1 times [2022-11-20 10:55:58,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:55:58,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744593189] [2022-11-20 10:55:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:58,472 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 10:55:58,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:55:58,473 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:55:58,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:01,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:56:01,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:02,306 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-20 10:56:02,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:02,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:02,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744593189] [2022-11-20 10:56:02,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744593189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:02,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:02,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:56:02,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297196417] [2022-11-20 10:56:02,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:02,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:56:02,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:56:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:56:02,309 INFO L87 Difference]: Start difference. First operand 3875 states and 5579 transitions. Second operand has 13 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 6 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 10:56:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:10,382 INFO L93 Difference]: Finished difference Result 8412 states and 12150 transitions. [2022-11-20 10:56:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:56:10,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 6 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 257 [2022-11-20 10:56:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:10,393 INFO L225 Difference]: With dead ends: 8412 [2022-11-20 10:56:10,393 INFO L226 Difference]: Without dead ends: 4553 [2022-11-20 10:56:10,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:56:10,403 INFO L413 NwaCegarLoop]: 6156 mSDtfsCounter, 2104 mSDsluCounter, 65030 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 71186 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:10,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2104 Valid, 71186 Invalid, 1115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [450 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 10:56:10,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-11-20 10:56:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 3879. [2022-11-20 10:56:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 2711 states have (on average 1.33234968646256) internal successors, (3612), 2772 states have internal predecessors, (3612), 986 states have call successors, (986), 183 states have call predecessors, (986), 180 states have return successors, (987), 966 states have call predecessors, (987), 986 states have call successors, (987) [2022-11-20 10:56:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5585 transitions. [2022-11-20 10:56:11,015 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5585 transitions. Word has length 257 [2022-11-20 10:56:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:11,016 INFO L495 AbstractCegarLoop]: Abstraction has 3879 states and 5585 transitions. [2022-11-20 10:56:11,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 6 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 10:56:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5585 transitions. [2022-11-20 10:56:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-20 10:56:11,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:11,021 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:56:11,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:11,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:11,244 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 10:56:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1795028038, now seen corresponding path program 1 times [2022-11-20 10:56:11,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:11,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874444519] [2022-11-20 10:56:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:11,248 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 10:56:11,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:11,249 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:11,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2382 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:56:14,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-20 10:56:14,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:14,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:14,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874444519] [2022-11-20 10:56:14,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874444519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:14,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:14,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:14,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632915214] [2022-11-20 10:56:14,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:14,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:14,371 INFO L87 Difference]: Start difference. First operand 3879 states and 5585 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 10:56:15,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:15,087 INFO L93 Difference]: Finished difference Result 7747 states and 11159 transitions. [2022-11-20 10:56:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:15,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 297 [2022-11-20 10:56:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:15,105 INFO L225 Difference]: With dead ends: 7747 [2022-11-20 10:56:15,105 INFO L226 Difference]: Without dead ends: 3885 [2022-11-20 10:56:15,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 295 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 10:56:15,117 INFO L413 NwaCegarLoop]: 5213 mSDtfsCounter, 2 mSDsluCounter, 5204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10417 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:15,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10417 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2022-11-20 10:56:15,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3881. [2022-11-20 10:56:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3881 states, 2713 states have (on average 1.3321046811647623) internal successors, (3614), 2774 states have internal predecessors, (3614), 986 states have call successors, (986), 183 states have call predecessors, (986), 180 states have return successors, (987), 966 states have call predecessors, (987), 986 states have call successors, (987) [2022-11-20 10:56:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 5587 transitions. [2022-11-20 10:56:15,780 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 5587 transitions. Word has length 297 [2022-11-20 10:56:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:15,781 INFO L495 AbstractCegarLoop]: Abstraction has 3881 states and 5587 transitions. [2022-11-20 10:56:15,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 10:56:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 5587 transitions. [2022-11-20 10:56:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-20 10:56:15,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:15,786 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:56:15,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:15,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:15,987 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 10:56:15,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:15,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1868369734, now seen corresponding path program 1 times [2022-11-20 10:56:15,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:15,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211878180] [2022-11-20 10:56:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:15,990 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 10:56:15,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:15,991 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:15,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:19,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:56:19,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-20 10:56:19,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:19,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:19,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211878180] [2022-11-20 10:56:19,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211878180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:19,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:19,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:19,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194916916] [2022-11-20 10:56:19,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:19,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:19,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:19,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:19,129 INFO L87 Difference]: Start difference. First operand 3881 states and 5587 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 10:56:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:19,803 INFO L93 Difference]: Finished difference Result 7751 states and 11163 transitions. [2022-11-20 10:56:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:19,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 298 [2022-11-20 10:56:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:19,819 INFO L225 Difference]: With dead ends: 7751 [2022-11-20 10:56:19,819 INFO L226 Difference]: Without dead ends: 3887 [2022-11-20 10:56:19,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:19,832 INFO L413 NwaCegarLoop]: 5213 mSDtfsCounter, 3 mSDsluCounter, 5207 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10420 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:19,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10420 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:19,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2022-11-20 10:56:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3882. [2022-11-20 10:56:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2714 states have (on average 1.3319823139277818) internal successors, (3615), 2775 states have internal predecessors, (3615), 986 states have call successors, (986), 183 states have call predecessors, (986), 180 states have return successors, (987), 966 states have call predecessors, (987), 986 states have call successors, (987) [2022-11-20 10:56:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5588 transitions. [2022-11-20 10:56:20,610 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5588 transitions. Word has length 298 [2022-11-20 10:56:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:20,610 INFO L495 AbstractCegarLoop]: Abstraction has 3882 states and 5588 transitions. [2022-11-20 10:56:20,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 10:56:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5588 transitions. [2022-11-20 10:56:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-20 10:56:20,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:20,615 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:56:20,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:20,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:20,823 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 10:56:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:20,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1277393350, now seen corresponding path program 1 times [2022-11-20 10:56:20,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:20,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513158816] [2022-11-20 10:56:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:20,826 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 10:56:20,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:20,828 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:20,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:56:24,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-11-20 10:56:25,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:25,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:25,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513158816] [2022-11-20 10:56:25,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513158816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:25,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:25,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:56:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385545870] [2022-11-20 10:56:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:25,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:56:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:25,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:56:25,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:56:25,393 INFO L87 Difference]: Start difference. First operand 3882 states and 5588 transitions. Second operand has 13 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-20 10:56:32,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:32,397 INFO L93 Difference]: Finished difference Result 8415 states and 12155 transitions. [2022-11-20 10:56:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:56:32,398 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 299 [2022-11-20 10:56:32,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:32,413 INFO L225 Difference]: With dead ends: 8415 [2022-11-20 10:56:32,413 INFO L226 Difference]: Without dead ends: 4549 [2022-11-20 10:56:32,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:56:32,425 INFO L413 NwaCegarLoop]: 6158 mSDtfsCounter, 2095 mSDsluCounter, 65078 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 71236 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:32,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2095 Valid, 71236 Invalid, 1022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [429 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 10:56:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2022-11-20 10:56:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 3882. [2022-11-20 10:56:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2714 states have (on average 1.3319823139277818) internal successors, (3615), 2774 states have internal predecessors, (3615), 986 states have call successors, (986), 183 states have call predecessors, (986), 180 states have return successors, (987), 966 states have call predecessors, (987), 986 states have call successors, (987) [2022-11-20 10:56:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5588 transitions. [2022-11-20 10:56:33,281 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5588 transitions. Word has length 299 [2022-11-20 10:56:33,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:33,282 INFO L495 AbstractCegarLoop]: Abstraction has 3882 states and 5588 transitions. [2022-11-20 10:56:33,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 6 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-20 10:56:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5588 transitions. [2022-11-20 10:56:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-20 10:56:33,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:33,287 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:56:33,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:33,488 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 10:56:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 889928138, now seen corresponding path program 1 times [2022-11-20 10:56:33,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:33,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605468776] [2022-11-20 10:56:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:33,492 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 10:56:33,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:33,493 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:33,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:36,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:56:36,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-20 10:56:37,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:37,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:37,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605468776] [2022-11-20 10:56:37,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605468776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:37,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:37,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:56:37,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129281069] [2022-11-20 10:56:37,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:37,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:56:37,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:37,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:56:37,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:56:37,352 INFO L87 Difference]: Start difference. First operand 3882 states and 5588 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (45), 3 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-20 10:56:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:38,524 INFO L93 Difference]: Finished difference Result 7857 states and 11313 transitions. [2022-11-20 10:56:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:56:38,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (45), 3 states have call predecessors, (45), 2 states have call successors, (45) Word has length 361 [2022-11-20 10:56:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:38,545 INFO L225 Difference]: With dead ends: 7857 [2022-11-20 10:56:38,546 INFO L226 Difference]: Without dead ends: 3992 [2022-11-20 10:56:38,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:38,564 INFO L413 NwaCegarLoop]: 5337 mSDtfsCounter, 107 mSDsluCounter, 21222 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 26559 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:38,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 26559 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:56:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2022-11-20 10:56:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3887. [2022-11-20 10:56:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3887 states, 2718 states have (on average 1.3314937454010303) internal successors, (3619), 2778 states have internal predecessors, (3619), 986 states have call successors, (986), 183 states have call predecessors, (986), 181 states have return successors, (991), 967 states have call predecessors, (991), 986 states have call successors, (991) [2022-11-20 10:56:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 5596 transitions. [2022-11-20 10:56:39,454 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 5596 transitions. Word has length 361 [2022-11-20 10:56:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:39,454 INFO L495 AbstractCegarLoop]: Abstraction has 3887 states and 5596 transitions. [2022-11-20 10:56:39,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (45), 3 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-20 10:56:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 5596 transitions. [2022-11-20 10:56:39,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-20 10:56:39,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:39,460 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-20 10:56:39,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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)] Ended with exit code 0 [2022-11-20 10:56:39,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:39,661 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 10:56:39,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:39,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1994175319, now seen corresponding path program 1 times [2022-11-20 10:56:39,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:39,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016058276] [2022-11-20 10:56:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:39,663 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 10:56:39,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:39,664 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:39,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:43,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:56:43,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2022-11-20 10:56:43,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:43,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:43,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016058276] [2022-11-20 10:56:43,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016058276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:43,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:43,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:43,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810322761] [2022-11-20 10:56:43,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:43,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:43,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:43,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:43,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:43,175 INFO L87 Difference]: Start difference. First operand 3887 states and 5596 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-20 10:56:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:44,065 INFO L93 Difference]: Finished difference Result 7761 states and 11175 transitions. [2022-11-20 10:56:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 378 [2022-11-20 10:56:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:44,078 INFO L225 Difference]: With dead ends: 7761 [2022-11-20 10:56:44,078 INFO L226 Difference]: Without dead ends: 3891 [2022-11-20 10:56:44,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:44,091 INFO L413 NwaCegarLoop]: 5215 mSDtfsCounter, 1 mSDsluCounter, 10423 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15638 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 10:56:44,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15638 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2022-11-20 10:56:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3889. [2022-11-20 10:56:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3889 states, 2720 states have (on average 1.33125) internal successors, (3621), 2779 states have internal predecessors, (3621), 986 states have call successors, (986), 183 states have call predecessors, (986), 181 states have return successors, (991), 967 states have call predecessors, (991), 986 states have call successors, (991) [2022-11-20 10:56:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 5598 transitions. [2022-11-20 10:56:44,805 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 5598 transitions. Word has length 378 [2022-11-20 10:56:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:44,806 INFO L495 AbstractCegarLoop]: Abstraction has 3889 states and 5598 transitions. [2022-11-20 10:56:44,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-20 10:56:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 5598 transitions. [2022-11-20 10:56:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-20 10:56:44,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:44,813 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:56:44,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:45,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:45,040 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 10:56:45,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash 537222787, now seen corresponding path program 1 times [2022-11-20 10:56:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:45,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581826767] [2022-11-20 10:56:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:45,043 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 10:56:45,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:45,044 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:45,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:48,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:56:48,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2022-11-20 10:56:48,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-20 10:56:49,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:49,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581826767] [2022-11-20 10:56:49,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581826767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:49,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:56:49,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:56:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479277425] [2022-11-20 10:56:49,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:49,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:56:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:56:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:49,158 INFO L87 Difference]: Start difference. First operand 3889 states and 5598 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 4 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2022-11-20 10:56:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:50,471 INFO L93 Difference]: Finished difference Result 7770 states and 11188 transitions. [2022-11-20 10:56:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:56:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 4 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 383 [2022-11-20 10:56:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:50,486 INFO L225 Difference]: With dead ends: 7770 [2022-11-20 10:56:50,486 INFO L226 Difference]: Without dead ends: 3898 [2022-11-20 10:56:50,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:56:50,497 INFO L413 NwaCegarLoop]: 5217 mSDtfsCounter, 6 mSDsluCounter, 20846 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 26063 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:50,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 26063 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:56:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2022-11-20 10:56:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3898. [2022-11-20 10:56:51,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 2726 states have (on average 1.330520909757887) internal successors, (3627), 2785 states have internal predecessors, (3627), 989 states have call successors, (989), 183 states have call predecessors, (989), 181 states have return successors, (994), 970 states have call predecessors, (994), 989 states have call successors, (994) [2022-11-20 10:56:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5610 transitions. [2022-11-20 10:56:51,345 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5610 transitions. Word has length 383 [2022-11-20 10:56:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:51,346 INFO L495 AbstractCegarLoop]: Abstraction has 3898 states and 5610 transitions. [2022-11-20 10:56:51,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 4 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2022-11-20 10:56:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5610 transitions. [2022-11-20 10:56:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-11-20 10:56:51,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:51,352 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 8, 8, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-20 10:56:51,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:51,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:51,552 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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 10:56:51,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1837795130, now seen corresponding path program 2 times [2022-11-20 10:56:51,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:51,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690879623] [2022-11-20 10:56:51,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:56:51,555 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 10:56:51,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:51,556 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:56:51,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:41,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:57:41,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:57:41,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:57:41,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 218 proven. 26 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2022-11-20 10:57:42,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2022-11-20 10:57:43,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:43,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690879623] [2022-11-20 10:57:43,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690879623] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:43,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:57:43,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 10:57:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826568772] [2022-11-20 10:57:43,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:43,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:57:43,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:43,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:57:43,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:57:43,465 INFO L87 Difference]: Start difference. First operand 3898 states and 5610 transitions. Second operand has 14 states, 14 states have (on average 13.214285714285714) internal successors, (185), 14 states have internal predecessors, (185), 10 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (74), 10 states have call predecessors, (74), 10 states have call successors, (74) [2022-11-20 10:57:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:46,179 INFO L93 Difference]: Finished difference Result 7797 states and 11227 transitions. [2022-11-20 10:57:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:57:46,179 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.214285714285714) internal successors, (185), 14 states have internal predecessors, (185), 10 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (74), 10 states have call predecessors, (74), 10 states have call successors, (74) Word has length 401 [2022-11-20 10:57:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:46,193 INFO L225 Difference]: With dead ends: 7797 [2022-11-20 10:57:46,194 INFO L226 Difference]: Without dead ends: 3916 [2022-11-20 10:57:46,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:57:46,211 INFO L413 NwaCegarLoop]: 5226 mSDtfsCounter, 15 mSDsluCounter, 36503 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41729 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:46,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 41729 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:57:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2022-11-20 10:57:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3916. [2022-11-20 10:57:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3916 states, 2738 states have (on average 1.329072315558802) internal successors, (3639), 2797 states have internal predecessors, (3639), 995 states have call successors, (995), 183 states have call predecessors, (995), 181 states have return successors, (1000), 976 states have call predecessors, (1000), 995 states have call successors, (1000) [2022-11-20 10:57:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 5634 transitions. [2022-11-20 10:57:47,025 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 5634 transitions. Word has length 401 [2022-11-20 10:57:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:47,026 INFO L495 AbstractCegarLoop]: Abstraction has 3916 states and 5634 transitions. [2022-11-20 10:57:47,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.214285714285714) internal successors, (185), 14 states have internal predecessors, (185), 10 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (74), 10 states have call predecessors, (74), 10 states have call successors, (74) [2022-11-20 10:57:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 5634 transitions. [2022-11-20 10:57:47,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-20 10:57:47,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:47,032 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 11, 10, 10, 10, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-20 10:57:47,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:47,233 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 10:57:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1274347275, now seen corresponding path program 1 times [2022-11-20 10:57:47,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:47,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920596255] [2022-11-20 10:57:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:47,236 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 10:57:47,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:47,237 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:47,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:57:50,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2022-11-20 10:57:50,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:50,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:50,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920596255] [2022-11-20 10:57:50,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920596255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:50,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:50,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:50,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610806776] [2022-11-20 10:57:50,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:50,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:50,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:50,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:50,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:50,776 INFO L87 Difference]: Start difference. First operand 3916 states and 5634 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 10:57:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:51,536 INFO L93 Difference]: Finished difference Result 7820 states and 11253 transitions. [2022-11-20 10:57:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:51,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 438 [2022-11-20 10:57:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:51,553 INFO L225 Difference]: With dead ends: 7820 [2022-11-20 10:57:51,553 INFO L226 Difference]: Without dead ends: 3921 [2022-11-20 10:57:51,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 436 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 10:57:51,571 INFO L413 NwaCegarLoop]: 5215 mSDtfsCounter, 2 mSDsluCounter, 5207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10422 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:51,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10422 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:57:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2022-11-20 10:57:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3917. [2022-11-20 10:57:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3917 states, 2739 states have (on average 1.3289521723256663) internal successors, (3640), 2798 states have internal predecessors, (3640), 995 states have call successors, (995), 183 states have call predecessors, (995), 181 states have return successors, (1000), 976 states have call predecessors, (1000), 995 states have call successors, (1000) [2022-11-20 10:57:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 5635 transitions. [2022-11-20 10:57:52,579 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 5635 transitions. Word has length 438 [2022-11-20 10:57:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:52,580 INFO L495 AbstractCegarLoop]: Abstraction has 3917 states and 5635 transitions. [2022-11-20 10:57:52,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 10:57:52,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 5635 transitions. [2022-11-20 10:57:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-20 10:57:52,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:52,588 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 11, 10, 10, 10, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:57:52,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:52,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:52,789 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 10:57:52,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:52,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1706721152, now seen corresponding path program 1 times [2022-11-20 10:57:52,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:52,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469230655] [2022-11-20 10:57:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:52,792 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 10:57:52,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:52,793 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:52,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:56,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:57:56,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 224 proven. 1 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2022-11-20 10:57:56,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2022-11-20 10:57:56,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:56,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469230655] [2022-11-20 10:57:56,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469230655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:56,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:57:56,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 10:57:56,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801805972] [2022-11-20 10:57:56,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:56,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:56,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:56,935 INFO L87 Difference]: Start difference. First operand 3917 states and 5635 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 4 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2022-11-20 10:57:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:58,130 INFO L93 Difference]: Finished difference Result 7832 states and 11271 transitions. [2022-11-20 10:57:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:57:58,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 4 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) Word has length 448 [2022-11-20 10:57:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:58,149 INFO L225 Difference]: With dead ends: 7832 [2022-11-20 10:57:58,149 INFO L226 Difference]: Without dead ends: 3932 [2022-11-20 10:57:58,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 890 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 10:57:58,166 INFO L413 NwaCegarLoop]: 5222 mSDtfsCounter, 8 mSDsluCounter, 20827 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26049 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:58,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 26049 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:57:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-11-20 10:57:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3932. [2022-11-20 10:57:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 2748 states have (on average 1.3278748180494906) internal successors, (3649), 2807 states have internal predecessors, (3649), 1001 states have call successors, (1001), 183 states have call predecessors, (1001), 181 states have return successors, (1006), 982 states have call predecessors, (1006), 1001 states have call successors, (1006) [2022-11-20 10:57:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 5656 transitions. [2022-11-20 10:57:59,168 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 5656 transitions. Word has length 448 [2022-11-20 10:57:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:59,168 INFO L495 AbstractCegarLoop]: Abstraction has 3932 states and 5656 transitions. [2022-11-20 10:57:59,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 4 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2022-11-20 10:57:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 5656 transitions. [2022-11-20 10:57:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-20 10:57:59,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:59,175 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 15, 11, 10, 10, 10, 7, 7, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:57:59,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:59,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:59,380 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 10:57:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1018008728, now seen corresponding path program 2 times [2022-11-20 10:57:59,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:59,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697721622] [2022-11-20 10:57:59,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:57:59,384 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 10:57:59,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:59,385 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:57:59,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:58:47,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:58:47,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:58:47,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:58:47,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 251 proven. 34 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2022-11-20 10:58:48,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1322 trivial. 0 not checked. [2022-11-20 10:58:49,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:49,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697721622] [2022-11-20 10:58:49,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697721622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:49,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:58:49,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 10:58:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462543349] [2022-11-20 10:58:49,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:49,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:58:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:58:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:58:49,315 INFO L87 Difference]: Start difference. First operand 3932 states and 5656 transitions. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 10 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (77), 10 states have call predecessors, (77), 10 states have call successors, (77) [2022-11-20 10:58:51,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:51,302 INFO L93 Difference]: Finished difference Result 7856 states and 11303 transitions. [2022-11-20 10:58:51,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:58:51,302 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 10 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (77), 10 states have call predecessors, (77), 10 states have call successors, (77) Word has length 481 [2022-11-20 10:58:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:51,316 INFO L225 Difference]: With dead ends: 7856 [2022-11-20 10:58:51,316 INFO L226 Difference]: Without dead ends: 3941 [2022-11-20 10:58:51,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 950 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:58:51,328 INFO L413 NwaCegarLoop]: 5235 mSDtfsCounter, 13 mSDsluCounter, 36510 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 41745 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:51,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 41745 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:58:51,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2022-11-20 10:58:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3937. [2022-11-20 10:58:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3937 states, 2751 states have (on average 1.3275172664485642) internal successors, (3652), 2810 states have internal predecessors, (3652), 1003 states have call successors, (1003), 183 states have call predecessors, (1003), 181 states have return successors, (1008), 984 states have call predecessors, (1008), 1003 states have call successors, (1008) [2022-11-20 10:58:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 5663 transitions. [2022-11-20 10:58:52,176 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 5663 transitions. Word has length 481 [2022-11-20 10:58:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:52,177 INFO L495 AbstractCegarLoop]: Abstraction has 3937 states and 5663 transitions. [2022-11-20 10:58:52,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 10 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (77), 10 states have call predecessors, (77), 10 states have call successors, (77) [2022-11-20 10:58:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 5663 transitions. [2022-11-20 10:58:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-20 10:58:52,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:52,183 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 15, 15, 15, 11, 10, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:58:52,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:58:52,384 INFO L420 AbstractCegarLoop]: === Iteration 32 === 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 10:58:52,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1283932544, now seen corresponding path program 3 times [2022-11-20 10:58:52,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:52,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057978277] [2022-11-20 10:58:52,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:58:52,387 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 10:58:52,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:52,388 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:58:52,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (33)] Waiting until timeout for monitored process [2022-11-20 10:59:39,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 10:59:39,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:59:39,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:59:39,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-20 10:59:45,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:59:45,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:59:45,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057978277] [2022-11-20 10:59:45,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057978277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:45,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:59:45,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:59:45,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922189396] [2022-11-20 10:59:45,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:45,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:59:45,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:59:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:59:45,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:59:45,890 INFO L87 Difference]: Start difference. First operand 3937 states and 5663 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2022-11-20 10:59:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:47,002 INFO L93 Difference]: Finished difference Result 3943 states and 5667 transitions. [2022-11-20 10:59:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:59:47,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 492 [2022-11-20 10:59:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:47,015 INFO L225 Difference]: With dead ends: 3943 [2022-11-20 10:59:47,016 INFO L226 Difference]: Without dead ends: 3941 [2022-11-20 10:59:47,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 488 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 10:59:47,019 INFO L413 NwaCegarLoop]: 5316 mSDtfsCounter, 4676 mSDsluCounter, 11262 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 16578 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:47,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 16578 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:59:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2022-11-20 10:59:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3937. [2022-11-20 10:59:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3937 states, 2751 states have (on average 1.327153762268266) internal successors, (3651), 2810 states have internal predecessors, (3651), 1003 states have call successors, (1003), 183 states have call predecessors, (1003), 181 states have return successors, (1008), 984 states have call predecessors, (1008), 1003 states have call successors, (1008) [2022-11-20 10:59:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 5662 transitions. [2022-11-20 10:59:47,804 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 5662 transitions. Word has length 492 [2022-11-20 10:59:47,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:59:47,804 INFO L495 AbstractCegarLoop]: Abstraction has 3937 states and 5662 transitions. [2022-11-20 10:59:47,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2022-11-20 10:59:47,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 5662 transitions. [2022-11-20 10:59:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-11-20 10:59:47,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:59:47,817 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:47,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (33)] Forceful destruction successful, exit code 0 [2022-11-20 10:59:48,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:59:48,032 INFO L420 AbstractCegarLoop]: === Iteration 33 === 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 10:59:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2131186034, now seen corresponding path program 1 times [2022-11-20 10:59:48,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:59:48,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161056498] [2022-11-20 10:59:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:48,035 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 10:59:48,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:59:48,036 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:59:48,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (34)] Waiting until timeout for monitored process [2022-11-20 10:59:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:52,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:59:52,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2022-11-20 10:59:52,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:59:52,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:59:52,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161056498] [2022-11-20 10:59:52,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161056498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:52,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:59:52,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:59:52,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959864661] [2022-11-20 10:59:52,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:52,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:59:52,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:59:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:59:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:59:52,282 INFO L87 Difference]: Start difference. First operand 3937 states and 5662 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-20 10:59:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:53,708 INFO L93 Difference]: Finished difference Result 8005 states and 11517 transitions. [2022-11-20 10:59:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:59:53,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 552 [2022-11-20 10:59:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:53,730 INFO L225 Difference]: With dead ends: 8005 [2022-11-20 10:59:53,730 INFO L226 Difference]: Without dead ends: 4085 [2022-11-20 10:59:53,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 550 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 10:59:53,750 INFO L413 NwaCegarLoop]: 5354 mSDtfsCounter, 177 mSDsluCounter, 10541 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 15895 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:53,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 15895 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:59:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2022-11-20 10:59:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 3939. [2022-11-20 10:59:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 2753 states have (on average 1.3269160915365057) internal successors, (3653), 2812 states have internal predecessors, (3653), 1003 states have call successors, (1003), 183 states have call predecessors, (1003), 181 states have return successors, (1008), 984 states have call predecessors, (1008), 1003 states have call successors, (1008) [2022-11-20 10:59:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5664 transitions. [2022-11-20 10:59:54,580 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5664 transitions. Word has length 552 [2022-11-20 10:59:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:59:54,581 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 5664 transitions. [2022-11-20 10:59:54,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-20 10:59:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5664 transitions. [2022-11-20 10:59:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-11-20 10:59:54,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:59:54,594 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:54,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (34)] Forceful destruction successful, exit code 0 [2022-11-20 10:59:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:59:54,801 INFO L420 AbstractCegarLoop]: === Iteration 34 === 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 10:59:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1852870507, now seen corresponding path program 1 times [2022-11-20 10:59:54,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:59:54,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813262075] [2022-11-20 10:59:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:54,804 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 10:59:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:59:54,805 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 10:59:54,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (35)] Waiting until timeout for monitored process [2022-11-20 10:59:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:58,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:59:58,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 1362 trivial. 0 not checked. [2022-11-20 11:00:00,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:00,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:00:00,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813262075] [2022-11-20 11:00:00,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813262075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:00,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:00:00,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:00:00,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086395018] [2022-11-20 11:00:00,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:00,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:00:00,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:00:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:00:00,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:00:00,423 INFO L87 Difference]: Start difference. First operand 3939 states and 5664 transitions. Second operand has 14 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 6 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (64), 6 states have call predecessors, (64), 6 states have call successors, (64) [2022-11-20 11:00:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:08,382 INFO L93 Difference]: Finished difference Result 8677 states and 12517 transitions. [2022-11-20 11:00:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:00:08,382 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 6 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (64), 6 states have call predecessors, (64), 6 states have call successors, (64) Word has length 559 [2022-11-20 11:00:08,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:08,394 INFO L225 Difference]: With dead ends: 8677 [2022-11-20 11:00:08,394 INFO L226 Difference]: Without dead ends: 4754 [2022-11-20 11:00:08,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:00:08,405 INFO L413 NwaCegarLoop]: 6176 mSDtfsCounter, 2291 mSDsluCounter, 71564 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 77740 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:08,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 77740 Invalid, 1178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [471 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 11:00:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2022-11-20 11:00:09,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 3940. [2022-11-20 11:00:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 2753 states have (on average 1.3269160915365057) internal successors, (3653), 2813 states have internal predecessors, (3653), 1004 states have call successors, (1004), 183 states have call predecessors, (1004), 181 states have return successors, (1009), 985 states have call predecessors, (1009), 1004 states have call successors, (1009) [2022-11-20 11:00:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 5666 transitions. [2022-11-20 11:00:09,214 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 5666 transitions. Word has length 559 [2022-11-20 11:00:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:09,214 INFO L495 AbstractCegarLoop]: Abstraction has 3940 states and 5666 transitions. [2022-11-20 11:00:09,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 6 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (64), 6 states have call predecessors, (64), 6 states have call successors, (64) [2022-11-20 11:00:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 5666 transitions. [2022-11-20 11:00:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-11-20 11:00:09,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:09,231 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 13, 13, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:09,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (35)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:09,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:00:09,435 INFO L420 AbstractCegarLoop]: === Iteration 35 === 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 11:00:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash -580791015, now seen corresponding path program 1 times [2022-11-20 11:00:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:00:09,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986114283] [2022-11-20 11:00:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:09,438 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 11:00:09,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:00:09,439 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:00:09,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (36)] Waiting until timeout for monitored process [2022-11-20 11:00:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:13,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 3586 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:00:13,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:13,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:00:14,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:00:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2022-11-20 11:00:14,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:14,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:00:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986114283] [2022-11-20 11:00:14,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986114283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:14,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:00:14,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:00:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055724675] [2022-11-20 11:00:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:14,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:00:14,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:00:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:00:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:00:14,086 INFO L87 Difference]: Start difference. First operand 3940 states and 5666 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-20 11:00:16,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:18,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:20,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:23,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:24,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:26,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:28,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:30,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:33,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:37,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:42,196 WARN L539 Checker$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 11:00:44,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:51,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:53,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:56,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:59,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:01,506 WARN L539 Checker$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 11:01:09,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:11,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:13,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:17,382 WARN L539 Checker$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 11:01:20,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:21,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:26,338 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 11:01:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:29,020 INFO L93 Difference]: Finished difference Result 7867 states and 11314 transitions. [2022-11-20 11:01:29,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:01:29,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 651 [2022-11-20 11:01:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:29,043 INFO L225 Difference]: With dead ends: 7867 [2022-11-20 11:01:29,043 INFO L226 Difference]: Without dead ends: 3944 [2022-11-20 11:01:29,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 648 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 11:01:29,056 INFO L413 NwaCegarLoop]: 5213 mSDtfsCounter, 2 mSDsluCounter, 9308 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 0 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14521 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:29,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14521 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1106 Invalid, 15 Unknown, 0 Unchecked, 73.9s Time] [2022-11-20 11:01:29,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-11-20 11:01:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3944. [2022-11-20 11:01:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3944 states, 2757 states have (on average 1.3264417845484222) internal successors, (3657), 2817 states have internal predecessors, (3657), 1004 states have call successors, (1004), 183 states have call predecessors, (1004), 181 states have return successors, (1009), 985 states have call predecessors, (1009), 1004 states have call successors, (1009) [2022-11-20 11:01:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 5670 transitions. [2022-11-20 11:01:29,791 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 5670 transitions. Word has length 651 [2022-11-20 11:01:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:29,791 INFO L495 AbstractCegarLoop]: Abstraction has 3944 states and 5670 transitions. [2022-11-20 11:01:29,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-20 11:01:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 5670 transitions. [2022-11-20 11:01:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2022-11-20 11:01:29,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:29,849 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 14, 14, 11, 10, 10, 10, 10, 10, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:29,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (36)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:30,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:01:30,051 INFO L420 AbstractCegarLoop]: === Iteration 36 === 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 11:01:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:30,052 INFO L85 PathProgramCache]: Analyzing trace with hash -601166267, now seen corresponding path program 1 times [2022-11-20 11:01:30,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:01:30,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213679349] [2022-11-20 11:01:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:30,054 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 11:01:30,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:01:30,055 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:01:30,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (37)] Waiting until timeout for monitored process [2022-11-20 11:01:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:34,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 3651 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:01:34,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1792 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 1444 trivial. 0 not checked. [2022-11-20 11:01:34,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:34,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:01:34,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213679349] [2022-11-20 11:01:34,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213679349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:34,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:34,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:01:34,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990403553] [2022-11-20 11:01:34,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:34,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:34,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:01:34,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:34,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:34,930 INFO L87 Difference]: Start difference. First operand 3944 states and 5670 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-20 11:01:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:38,247 INFO L93 Difference]: Finished difference Result 9334 states and 13490 transitions. [2022-11-20 11:01:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:01:38,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 665 [2022-11-20 11:01:38,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:38,261 INFO L225 Difference]: With dead ends: 9334 [2022-11-20 11:01:38,261 INFO L226 Difference]: Without dead ends: 5407 [2022-11-20 11:01:38,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:38,270 INFO L413 NwaCegarLoop]: 6196 mSDtfsCounter, 1420 mSDsluCounter, 10754 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 16950 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:38,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 16950 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:01:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2022-11-20 11:01:39,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 3948. [2022-11-20 11:01:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2761 states have (on average 1.3263310394784498) internal successors, (3662), 2821 states have internal predecessors, (3662), 1004 states have call successors, (1004), 183 states have call predecessors, (1004), 181 states have return successors, (1009), 985 states have call predecessors, (1009), 1004 states have call successors, (1009) [2022-11-20 11:01:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5675 transitions. [2022-11-20 11:01:39,085 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5675 transitions. Word has length 665 [2022-11-20 11:01:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:39,086 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 5675 transitions. [2022-11-20 11:01:39,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-20 11:01:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5675 transitions. [2022-11-20 11:01:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2022-11-20 11:01:39,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:39,100 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 12, 12, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:39,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (37)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:39,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:01:39,301 INFO L420 AbstractCegarLoop]: === Iteration 37 === 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 11:01:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:39,301 INFO L85 PathProgramCache]: Analyzing trace with hash 349806443, now seen corresponding path program 1 times [2022-11-20 11:01:39,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:01:39,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138825406] [2022-11-20 11:01:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:39,304 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 11:01:39,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:01:39,305 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:01:39,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (38)] Waiting until timeout for monitored process [2022-11-20 11:01:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:44,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:01:44,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1699 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 1362 trivial. 0 not checked. [2022-11-20 11:01:44,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:44,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:01:44,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138825406] [2022-11-20 11:01:44,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138825406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:44,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:44,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:44,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470001455] [2022-11-20 11:01:44,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:44,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:01:44,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:01:44,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:01:44,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:01:44,466 INFO L87 Difference]: Start difference. First operand 3948 states and 5675 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-20 11:01:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:45,816 INFO L93 Difference]: Finished difference Result 8632 states and 12446 transitions. [2022-11-20 11:01:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:01:45,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 645 [2022-11-20 11:01:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:45,832 INFO L225 Difference]: With dead ends: 8632 [2022-11-20 11:01:45,832 INFO L226 Difference]: Without dead ends: 4701 [2022-11-20 11:01:45,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 643 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 11:01:45,844 INFO L413 NwaCegarLoop]: 6173 mSDtfsCounter, 716 mSDsluCounter, 5345 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 11518 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:45,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 11518 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:01:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2022-11-20 11:01:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 3956. [2022-11-20 11:01:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 2767 states have (on average 1.3263462233465848) internal successors, (3670), 2827 states have internal predecessors, (3670), 1006 states have call successors, (1006), 183 states have call predecessors, (1006), 181 states have return successors, (1011), 987 states have call predecessors, (1011), 1006 states have call successors, (1011) [2022-11-20 11:01:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 5687 transitions. [2022-11-20 11:01:46,702 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 5687 transitions. Word has length 645 [2022-11-20 11:01:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:46,702 INFO L495 AbstractCegarLoop]: Abstraction has 3956 states and 5687 transitions. [2022-11-20 11:01:46,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-20 11:01:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 5687 transitions. [2022-11-20 11:01:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2022-11-20 11:01:46,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:46,715 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 14, 14, 14, 14, 14, 11, 10, 10, 10, 9, 9, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:46,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (38)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:46,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:01:46,916 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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 11:01:46,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash -915521447, now seen corresponding path program 1 times [2022-11-20 11:01:46,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:01:46,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470908430] [2022-11-20 11:01:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:46,919 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 11:01:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:01:46,920 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:01:46,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (39)] Waiting until timeout for monitored process [2022-11-20 11:01:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:53,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 4338 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:01:53,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2022-11-20 11:01:53,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:53,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:01:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470908430] [2022-11-20 11:01:53,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470908430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:53,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:53,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:01:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750459851] [2022-11-20 11:01:53,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:53,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:01:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:53,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:53,446 INFO L87 Difference]: Start difference. First operand 3956 states and 5687 transitions. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 2 states have call successors, (78), 2 states have call predecessors, (78), 3 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-20 11:01:54,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:54,549 INFO L93 Difference]: Finished difference Result 7899 states and 11359 transitions. [2022-11-20 11:01:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:01:54,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 2 states have call successors, (78), 2 states have call predecessors, (78), 3 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 659 [2022-11-20 11:01:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:54,565 INFO L225 Difference]: With dead ends: 7899 [2022-11-20 11:01:54,565 INFO L226 Difference]: Without dead ends: 3958 [2022-11-20 11:01:54,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:01:54,581 INFO L413 NwaCegarLoop]: 5212 mSDtfsCounter, 3 mSDsluCounter, 10419 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15631 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:54,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15631 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:01:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2022-11-20 11:01:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3957. [2022-11-20 11:01:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3957 states, 2768 states have (on average 1.326228323699422) internal successors, (3671), 2828 states have internal predecessors, (3671), 1006 states have call successors, (1006), 183 states have call predecessors, (1006), 181 states have return successors, (1011), 987 states have call predecessors, (1011), 1006 states have call successors, (1011) [2022-11-20 11:01:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3957 states to 3957 states and 5688 transitions. [2022-11-20 11:01:55,450 INFO L78 Accepts]: Start accepts. Automaton has 3957 states and 5688 transitions. Word has length 659 [2022-11-20 11:01:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:55,451 INFO L495 AbstractCegarLoop]: Abstraction has 3957 states and 5688 transitions. [2022-11-20 11:01:55,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 2 states have call successors, (78), 2 states have call predecessors, (78), 3 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-20 11:01:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3957 states and 5688 transitions. [2022-11-20 11:01:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-11-20 11:01:55,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:55,464 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 13, 13, 11, 10, 10, 10, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:55,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (39)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:55,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:01:55,665 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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 11:01:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1518196170, now seen corresponding path program 1 times [2022-11-20 11:01:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:01:55,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634123789] [2022-11-20 11:01:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:55,668 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 11:01:55,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:01:55,669 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:01:55,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (40)] Waiting until timeout for monitored process [2022-11-20 11:02:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:00,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 3616 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:02:00,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 319 proven. 1 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2022-11-20 11:02:01,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1703 trivial. 0 not checked. [2022-11-20 11:02:01,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:01,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634123789] [2022-11-20 11:02:01,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634123789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:01,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:01,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 11:02:01,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241063473] [2022-11-20 11:02:01,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:01,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:02:01,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:02:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:02:01,702 INFO L87 Difference]: Start difference. First operand 3957 states and 5688 transitions. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 4 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) [2022-11-20 11:02:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:09,126 INFO L93 Difference]: Finished difference Result 9395 states and 13577 transitions. [2022-11-20 11:02:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 4 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) Word has length 668 [2022-11-20 11:02:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:09,148 INFO L225 Difference]: With dead ends: 9395 [2022-11-20 11:02:09,149 INFO L226 Difference]: Without dead ends: 5455 [2022-11-20 11:02:09,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1330 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:02:09,169 INFO L413 NwaCegarLoop]: 6968 mSDtfsCounter, 2153 mSDsluCounter, 18278 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 25246 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:09,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2446 Valid, 25246 Invalid, 634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [152 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 11:02:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2022-11-20 11:02:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 3966. [2022-11-20 11:02:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3966 states, 2775 states have (on average 1.3257657657657658) internal successors, (3679), 2835 states have internal predecessors, (3679), 1008 states have call successors, (1008), 183 states have call predecessors, (1008), 181 states have return successors, (1013), 989 states have call predecessors, (1013), 1008 states have call successors, (1013) [2022-11-20 11:02:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3966 states to 3966 states and 5700 transitions. [2022-11-20 11:02:10,032 INFO L78 Accepts]: Start accepts. Automaton has 3966 states and 5700 transitions. Word has length 668 [2022-11-20 11:02:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:10,033 INFO L495 AbstractCegarLoop]: Abstraction has 3966 states and 5700 transitions. [2022-11-20 11:02:10,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 4 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) [2022-11-20 11:02:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3966 states and 5700 transitions. [2022-11-20 11:02:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-11-20 11:02:10,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:10,048 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 14, 14, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:10,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (40)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:10,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:10,248 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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 11:02:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:10,249 INFO L85 PathProgramCache]: Analyzing trace with hash 621313878, now seen corresponding path program 1 times [2022-11-20 11:02:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934543864] [2022-11-20 11:02:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:10,252 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 11:02:10,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:10,253 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:10,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (41)] Waiting until timeout for monitored process [2022-11-20 11:02:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:15,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 3690 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:02:15,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 360 proven. 1 refuted. 0 times theorem prover too weak. 1414 trivial. 0 not checked. [2022-11-20 11:02:16,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-11-20 11:02:17,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:17,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934543864] [2022-11-20 11:02:17,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934543864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:17,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:17,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-20 11:02:17,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694672190] [2022-11-20 11:02:17,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:02:17,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:17,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:02:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:02:17,676 INFO L87 Difference]: Start difference. First operand 3966 states and 5700 transitions. Second operand has 10 states, 10 states have (on average 32.7) internal successors, (327), 9 states have internal predecessors, (327), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (108), 3 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-20 11:02:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:20,343 INFO L93 Difference]: Finished difference Result 8683 states and 12527 transitions. [2022-11-20 11:02:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:02:20,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.7) internal successors, (327), 9 states have internal predecessors, (327), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (108), 3 states have call predecessors, (108), 2 states have call successors, (108) Word has length 686 [2022-11-20 11:02:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:20,357 INFO L225 Difference]: With dead ends: 8683 [2022-11-20 11:02:20,357 INFO L226 Difference]: Without dead ends: 4734 [2022-11-20 11:02:20,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1362 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:02:20,368 INFO L413 NwaCegarLoop]: 5910 mSDtfsCounter, 722 mSDsluCounter, 28925 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 34835 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:20,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 34835 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:02:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-11-20 11:02:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 3976. [2022-11-20 11:02:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3976 states, 2784 states have (on average 1.3254310344827587) internal successors, (3690), 2843 states have internal predecessors, (3690), 1008 states have call successors, (1008), 183 states have call predecessors, (1008), 182 states have return successors, (1019), 991 states have call predecessors, (1019), 1008 states have call successors, (1019) [2022-11-20 11:02:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3976 states to 3976 states and 5717 transitions. [2022-11-20 11:02:21,215 INFO L78 Accepts]: Start accepts. Automaton has 3976 states and 5717 transitions. Word has length 686 [2022-11-20 11:02:21,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:21,216 INFO L495 AbstractCegarLoop]: Abstraction has 3976 states and 5717 transitions. [2022-11-20 11:02:21,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.7) internal successors, (327), 9 states have internal predecessors, (327), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (108), 3 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-20 11:02:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3976 states and 5717 transitions. [2022-11-20 11:02:21,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2022-11-20 11:02:21,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:21,231 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 14, 14, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:21,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (41)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:21,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:21,432 INFO L420 AbstractCegarLoop]: === Iteration 41 === 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 11:02:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2128613682, now seen corresponding path program 1 times [2022-11-20 11:02:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:21,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032595061] [2022-11-20 11:02:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:21,437 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 11:02:21,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:21,438 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:21,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (42)] Waiting until timeout for monitored process [2022-11-20 11:02:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:26,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 3715 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:02:26,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2022-11-20 11:02:26,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:26,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:26,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032595061] [2022-11-20 11:02:26,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032595061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:26,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:26,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592584349] [2022-11-20 11:02:26,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:26,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:02:26,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:02:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:26,935 INFO L87 Difference]: Start difference. First operand 3976 states and 5717 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2022-11-20 11:02:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:27,802 INFO L93 Difference]: Finished difference Result 7957 states and 11446 transitions. [2022-11-20 11:02:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:02:27,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 688 [2022-11-20 11:02:27,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:27,814 INFO L225 Difference]: With dead ends: 7957 [2022-11-20 11:02:27,814 INFO L226 Difference]: Without dead ends: 3998 [2022-11-20 11:02:27,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 686 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 11:02:27,825 INFO L413 NwaCegarLoop]: 5222 mSDtfsCounter, 25 mSDsluCounter, 5210 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 10432 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:27,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 10432 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:02:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-11-20 11:02:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3977. [2022-11-20 11:02:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 2785 states have (on average 1.325314183123878) internal successors, (3691), 2844 states have internal predecessors, (3691), 1008 states have call successors, (1008), 183 states have call predecessors, (1008), 182 states have return successors, (1019), 991 states have call predecessors, (1019), 1008 states have call successors, (1019) [2022-11-20 11:02:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 5718 transitions. [2022-11-20 11:02:28,642 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 5718 transitions. Word has length 688 [2022-11-20 11:02:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:28,642 INFO L495 AbstractCegarLoop]: Abstraction has 3977 states and 5718 transitions. [2022-11-20 11:02:28,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2022-11-20 11:02:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 5718 transitions. [2022-11-20 11:02:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2022-11-20 11:02:28,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:28,660 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 13, 13, 11, 10, 10, 10, 10, 10, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:28,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (42)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:28,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:28,862 INFO L420 AbstractCegarLoop]: === Iteration 42 === 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 11:02:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:28,862 INFO L85 PathProgramCache]: Analyzing trace with hash -472784706, now seen corresponding path program 1 times [2022-11-20 11:02:28,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:28,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518782597] [2022-11-20 11:02:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:28,865 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 11:02:28,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:28,867 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:28,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (43)] Waiting until timeout for monitored process [2022-11-20 11:02:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:34,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 3687 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:02:34,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-20 11:02:34,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:34,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:34,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518782597] [2022-11-20 11:02:34,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518782597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:34,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:34,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208957486] [2022-11-20 11:02:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:02:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:02:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:34,378 INFO L87 Difference]: Start difference. First operand 3977 states and 5718 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 2 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-20 11:02:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:35,879 INFO L93 Difference]: Finished difference Result 8671 states and 12503 transitions. [2022-11-20 11:02:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:02:35,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 2 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 685 [2022-11-20 11:02:35,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:35,892 INFO L225 Difference]: With dead ends: 8671 [2022-11-20 11:02:35,892 INFO L226 Difference]: Without dead ends: 4711 [2022-11-20 11:02:35,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 683 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 11:02:35,902 INFO L413 NwaCegarLoop]: 5536 mSDtfsCounter, 693 mSDsluCounter, 5236 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 10772 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:35,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 10772 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:02:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2022-11-20 11:02:36,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 3988. [2022-11-20 11:02:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 2796 states have (on average 1.3258226037195995) internal successors, (3707), 2855 states have internal predecessors, (3707), 1008 states have call successors, (1008), 183 states have call predecessors, (1008), 182 states have return successors, (1019), 991 states have call predecessors, (1019), 1008 states have call successors, (1019) [2022-11-20 11:02:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 5734 transitions. [2022-11-20 11:02:36,775 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 5734 transitions. Word has length 685 [2022-11-20 11:02:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:36,775 INFO L495 AbstractCegarLoop]: Abstraction has 3988 states and 5734 transitions. [2022-11-20 11:02:36,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 2 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-20 11:02:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 5734 transitions. [2022-11-20 11:02:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-11-20 11:02:36,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:36,788 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 12, 12, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:36,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (43)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:36,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:36,989 INFO L420 AbstractCegarLoop]: === Iteration 43 === 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 11:02:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2029208887, now seen corresponding path program 1 times [2022-11-20 11:02:36,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:36,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300795912] [2022-11-20 11:02:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:36,992 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 11:02:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:36,993 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:36,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (44)] Waiting until timeout for monitored process [2022-11-20 11:02:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:42,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:02:42,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 337 proven. 1 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2022-11-20 11:02:42,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1716 trivial. 0 not checked. [2022-11-20 11:02:43,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:43,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300795912] [2022-11-20 11:02:43,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300795912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:43,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:43,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 11:02:43,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578262381] [2022-11-20 11:02:43,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:43,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:02:43,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:43,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:02:43,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:02:43,088 INFO L87 Difference]: Start difference. First operand 3988 states and 5734 transitions. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2022-11-20 11:02:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:44,265 INFO L93 Difference]: Finished difference Result 8016 states and 11533 transitions. [2022-11-20 11:02:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:44,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) Word has length 676 [2022-11-20 11:02:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:44,275 INFO L225 Difference]: With dead ends: 8016 [2022-11-20 11:02:44,275 INFO L226 Difference]: Without dead ends: 4045 [2022-11-20 11:02:44,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1350 GetRequests, 1346 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:02:44,283 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 107 mSDsluCounter, 10445 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 15702 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:44,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 15702 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:02:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2022-11-20 11:02:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 4045. [2022-11-20 11:02:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 2845 states have (on average 1.32688927943761) internal successors, (3775), 2904 states have internal predecessors, (3775), 1016 states have call successors, (1016), 183 states have call predecessors, (1016), 182 states have return successors, (1027), 999 states have call predecessors, (1027), 1016 states have call successors, (1027) [2022-11-20 11:02:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 5818 transitions. [2022-11-20 11:02:45,129 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 5818 transitions. Word has length 676 [2022-11-20 11:02:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:45,129 INFO L495 AbstractCegarLoop]: Abstraction has 4045 states and 5818 transitions. [2022-11-20 11:02:45,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2022-11-20 11:02:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 5818 transitions. [2022-11-20 11:02:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2022-11-20 11:02:45,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:45,143 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 13, 13, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:45,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (44)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:45,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:45,344 INFO L420 AbstractCegarLoop]: === Iteration 44 === 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 11:02:45,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash 852167714, now seen corresponding path program 1 times [2022-11-20 11:02:45,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:45,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295261201] [2022-11-20 11:02:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:45,347 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 11:02:45,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:45,348 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:45,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (45)] Waiting until timeout for monitored process [2022-11-20 11:02:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:50,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 3746 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:02:50,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2022-11-20 11:02:50,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:50,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:50,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295261201] [2022-11-20 11:02:50,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295261201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:50,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:50,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787210692] [2022-11-20 11:02:50,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:50,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:02:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:50,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:02:50,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:50,906 INFO L87 Difference]: Start difference. First operand 4045 states and 5818 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-20 11:02:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:52,055 INFO L93 Difference]: Finished difference Result 8081 states and 11625 transitions. [2022-11-20 11:02:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:02:52,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 712 [2022-11-20 11:02:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:52,066 INFO L225 Difference]: With dead ends: 8081 [2022-11-20 11:02:52,066 INFO L226 Difference]: Without dead ends: 4053 [2022-11-20 11:02:52,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 710 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 11:02:52,075 INFO L413 NwaCegarLoop]: 5206 mSDtfsCounter, 4 mSDsluCounter, 5193 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10399 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:52,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10399 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:02:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2022-11-20 11:02:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 4049. [2022-11-20 11:02:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4049 states, 2849 states have (on average 1.3264303264303263) internal successors, (3779), 2908 states have internal predecessors, (3779), 1016 states have call successors, (1016), 183 states have call predecessors, (1016), 182 states have return successors, (1027), 999 states have call predecessors, (1027), 1016 states have call successors, (1027) [2022-11-20 11:02:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4049 states to 4049 states and 5822 transitions. [2022-11-20 11:02:52,924 INFO L78 Accepts]: Start accepts. Automaton has 4049 states and 5822 transitions. Word has length 712 [2022-11-20 11:02:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:52,924 INFO L495 AbstractCegarLoop]: Abstraction has 4049 states and 5822 transitions. [2022-11-20 11:02:52,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-20 11:02:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4049 states and 5822 transitions. [2022-11-20 11:02:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2022-11-20 11:02:52,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:52,937 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 14, 14, 14, 14, 14, 11, 10, 10, 10, 9, 9, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:52,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (45)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:53,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:53,138 INFO L420 AbstractCegarLoop]: === Iteration 45 === 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 11:02:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2104120215, now seen corresponding path program 1 times [2022-11-20 11:02:53,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:53,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085074016] [2022-11-20 11:02:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:53,141 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 11:02:53,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:53,142 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:02:53,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (46)] Waiting until timeout for monitored process [2022-11-20 11:02:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:59,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 4481 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:02:59,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 269 proven. 1 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2022-11-20 11:03:00,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2022-11-20 11:03:00,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:00,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085074016] [2022-11-20 11:03:00,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085074016] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:00,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:00,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 11:03:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786015173] [2022-11-20 11:03:00,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:00,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:00,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:00,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:00,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:03:00,523 INFO L87 Difference]: Start difference. First operand 4049 states and 5822 transitions. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-20 11:03:03,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:04,881 INFO L93 Difference]: Finished difference Result 8114 states and 11670 transitions. [2022-11-20 11:03:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:03:04,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 701 [2022-11-20 11:03:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:04,892 INFO L225 Difference]: With dead ends: 8114 [2022-11-20 11:03:04,892 INFO L226 Difference]: Without dead ends: 4082 [2022-11-20 11:03:04,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1401 GetRequests, 1396 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:04,902 INFO L413 NwaCegarLoop]: 5203 mSDtfsCounter, 33 mSDsluCounter, 15580 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 20783 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:04,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 20783 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 11:03:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2022-11-20 11:03:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 4073. [2022-11-20 11:03:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 2873 states have (on average 1.3237034458753916) internal successors, (3803), 2932 states have internal predecessors, (3803), 1016 states have call successors, (1016), 183 states have call predecessors, (1016), 182 states have return successors, (1027), 999 states have call predecessors, (1027), 1016 states have call successors, (1027) [2022-11-20 11:03:05,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 5846 transitions. [2022-11-20 11:03:05,794 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 5846 transitions. Word has length 701 [2022-11-20 11:03:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:05,794 INFO L495 AbstractCegarLoop]: Abstraction has 4073 states and 5846 transitions. [2022-11-20 11:03:05,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-20 11:03:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 5846 transitions. [2022-11-20 11:03:05,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-11-20 11:03:05,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:05,807 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 12, 12, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:05,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (46)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:03:06,008 INFO L420 AbstractCegarLoop]: === Iteration 46 === 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 11:03:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash 199154422, now seen corresponding path program 1 times [2022-11-20 11:03:06,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:06,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079156030] [2022-11-20 11:03:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:06,011 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 11:03:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:06,012 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:03:06,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (47)] Waiting until timeout for monitored process [2022-11-20 11:03:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:12,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 3698 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:03:12,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 349 proven. 16 refuted. 0 times theorem prover too weak. 1397 trivial. 0 not checked. [2022-11-20 11:03:12,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2022-11-20 11:03:13,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:13,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079156030] [2022-11-20 11:03:13,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079156030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:13,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:13,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 11:03:13,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131445086] [2022-11-20 11:03:13,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:13,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:03:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:03:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:03:13,579 INFO L87 Difference]: Start difference. First operand 4073 states and 5846 transitions. Second operand has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2022-11-20 11:03:16,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:18,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:20,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:22,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:27,448 INFO L93 Difference]: Finished difference Result 8167 states and 11725 transitions. [2022-11-20 11:03:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:03:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 703 [2022-11-20 11:03:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:27,463 INFO L225 Difference]: With dead ends: 8167 [2022-11-20 11:03:27,463 INFO L226 Difference]: Without dead ends: 4111 [2022-11-20 11:03:27,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1407 GetRequests, 1394 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:03:27,481 INFO L413 NwaCegarLoop]: 5207 mSDtfsCounter, 64 mSDsluCounter, 36369 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 89 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 41576 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:27,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 41576 Invalid, 491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 400 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2022-11-20 11:03:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2022-11-20 11:03:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4089. [2022-11-20 11:03:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 2889 states have (on average 1.3219106957424716) internal successors, (3819), 2948 states have internal predecessors, (3819), 1016 states have call successors, (1016), 183 states have call predecessors, (1016), 182 states have return successors, (1027), 999 states have call predecessors, (1027), 1016 states have call successors, (1027) [2022-11-20 11:03:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5862 transitions. [2022-11-20 11:03:28,391 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5862 transitions. Word has length 703 [2022-11-20 11:03:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:28,392 INFO L495 AbstractCegarLoop]: Abstraction has 4089 states and 5862 transitions. [2022-11-20 11:03:28,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2022-11-20 11:03:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5862 transitions. [2022-11-20 11:03:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2022-11-20 11:03:28,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:28,405 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 12, 12, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:28,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (47)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:28,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:03:28,606 INFO L420 AbstractCegarLoop]: === Iteration 47 === 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 11:03:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2046405617, now seen corresponding path program 1 times [2022-11-20 11:03:28,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:28,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97306756] [2022-11-20 11:03:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:28,609 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 11:03:28,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:28,610 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:03:28,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (48)] Waiting until timeout for monitored process [2022-11-20 11:03:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:35,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 3702 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:35,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2022-11-20 11:03:36,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:36,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:36,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97306756] [2022-11-20 11:03:36,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97306756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:36,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:36,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:36,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595291994] [2022-11-20 11:03:36,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:36,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:36,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:36,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:36,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:36,418 INFO L87 Difference]: Start difference. First operand 4089 states and 5862 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (73), 4 states have call predecessors, (73), 4 states have call successors, (73) [2022-11-20 11:03:38,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:39,964 INFO L93 Difference]: Finished difference Result 9073 states and 13035 transitions. [2022-11-20 11:03:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:39,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (73), 4 states have call predecessors, (73), 4 states have call successors, (73) Word has length 706 [2022-11-20 11:03:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:39,980 INFO L225 Difference]: With dead ends: 9073 [2022-11-20 11:03:39,980 INFO L226 Difference]: Without dead ends: 5001 [2022-11-20 11:03:39,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 703 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 11:03:39,991 INFO L413 NwaCegarLoop]: 5640 mSDtfsCounter, 807 mSDsluCounter, 10746 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 16386 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:39,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 16386 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 11:03:39,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5001 states. [2022-11-20 11:03:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5001 to 4117. [2022-11-20 11:03:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4117 states, 2912 states have (on average 1.3203983516483517) internal successors, (3845), 2971 states have internal predecessors, (3845), 1021 states have call successors, (1021), 183 states have call predecessors, (1021), 182 states have return successors, (1032), 1004 states have call predecessors, (1032), 1021 states have call successors, (1032) [2022-11-20 11:03:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 5898 transitions. [2022-11-20 11:03:41,087 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 5898 transitions. Word has length 706 [2022-11-20 11:03:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:41,088 INFO L495 AbstractCegarLoop]: Abstraction has 4117 states and 5898 transitions. [2022-11-20 11:03:41,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (73), 4 states have call predecessors, (73), 4 states have call successors, (73) [2022-11-20 11:03:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 5898 transitions. [2022-11-20 11:03:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2022-11-20 11:03:41,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:41,105 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 12, 12, 11, 10, 10, 10, 9, 9, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:41,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (48)] Ended with exit code 0 [2022-11-20 11:03:41,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:03:41,332 INFO L420 AbstractCegarLoop]: === Iteration 48 === 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 11:03:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash 846240637, now seen corresponding path program 1 times [2022-11-20 11:03:41,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:41,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735019330] [2022-11-20 11:03:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:41,337 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 11:03:41,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:41,338 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 11:03:41,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c676a4d-b618-47a1-853a-baeeb80320b4/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 (49)] Waiting until timeout for monitored process [2022-11-20 11:03:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:48,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 3710 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 11:03:48,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 363 proven. 46 refuted. 0 times theorem prover too weak. 1373 trivial. 0 not checked. [2022-11-20 11:04:01,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 19 proven. 51 refuted. 0 times theorem prover too weak. 1712 trivial. 0 not checked. [2022-11-20 11:04:19,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:19,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735019330] [2022-11-20 11:04:19,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735019330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:19,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:19,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 35 [2022-11-20 11:04:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411687757] [2022-11-20 11:04:19,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:19,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:04:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:19,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:04:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1097, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 11:04:19,014 INFO L87 Difference]: Start difference. First operand 4117 states and 5898 transitions. Second operand has 35 states, 28 states have (on average 15.142857142857142) internal successors, (424), 27 states have internal predecessors, (424), 15 states have call successors, (139), 2 states have call predecessors, (139), 10 states have return successors, (134), 17 states have call predecessors, (134), 15 states have call successors, (134) [2022-11-20 11:04:27,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:29,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:31,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:33,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:34,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:36,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:38,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:39,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:41,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:43,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:45,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:47,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:50,484 WARN L539 Checker$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 11:04:52,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:53,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:55,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:04:57,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:04,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:17,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:19,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:21,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:23,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:25,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:27,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:29,443 WARN L539 Checker$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 11:05:31,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:33,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:35,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:37,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:39,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:41,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:47,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:49,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:56,121 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 []