./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/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 fb901e431a7ee0706f0e51d89ec94e4336f8310f955de577abd9c91b26865dbf --- 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 10:34:12,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:34:12,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:34:12,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:34:12,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:34:12,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:34:12,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:34:12,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:34:12,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:34:12,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:34:12,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:34:12,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:34:12,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:34:12,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:34:12,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:34:12,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:34:12,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:34:12,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:34:12,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:34:12,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:34:12,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:34:12,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:34:12,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:34:12,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:34:12,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:34:12,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:34:12,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:34:12,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:34:12,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:34:12,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:34:12,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:34:12,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:34:12,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:34:12,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:34:12,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:34:12,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:34:12,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:34:12,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:34:12,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:34:12,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:34:12,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:34:12,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:34:12,399 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:34:12,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:34:12,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:34:12,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:34:12,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:34:12,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:34:12,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:34:12,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:34:12,405 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:34:12,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:34:12,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:34:12,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:34:12,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:34:12,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:34:12,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:34:12,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:34:12,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:34:12,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:34:12,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:34:12,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:34:12,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:34:12,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:34:12,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:34:12,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:34:12,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:34:12,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:34:12,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:34:12,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:34:12,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:34:12,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:34:12,412 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb901e431a7ee0706f0e51d89ec94e4336f8310f955de577abd9c91b26865dbf [2022-11-20 10:34:12,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:34:12,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:34:12,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:34:12,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:34:12,736 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:34:12,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i [2022-11-20 10:34:15,854 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:34:16,751 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:34:16,752 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i [2022-11-20 10:34:16,826 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/data/761e4e5aa/9085a0d5266d40b59f4eedb0be0db1db/FLAGf4532d516 [2022-11-20 10:34:16,845 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/data/761e4e5aa/9085a0d5266d40b59f4eedb0be0db1db [2022-11-20 10:34:16,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:34:16,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:34:16,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:34:16,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:34:16,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:34:16,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:34:16" (1/1) ... [2022-11-20 10:34:16,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc8d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:16, skipping insertion in model container [2022-11-20 10:34:16,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:34:16" (1/1) ... [2022-11-20 10:34:16,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:34:17,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:34:17,924 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 10:34:17,930 INFO L158 Benchmark]: Toolchain (without parser) took 1076.35ms. Allocated memory is still 188.7MB. Free memory was 118.5MB in the beginning and 133.6MB in the end (delta: -15.1MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2022-11-20 10:34:17,930 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:34:17,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1072.70ms. Allocated memory is still 188.7MB. Free memory was 118.2MB in the beginning and 133.6MB in the end (delta: -15.4MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2022-11-20 10:34:17,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1072.70ms. Allocated memory is still 188.7MB. Free memory was 118.2MB in the beginning and 133.6MB in the end (delta: -15.4MB). Peak memory consumption was 43.4MB. 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/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 fb901e431a7ee0706f0e51d89ec94e4336f8310f955de577abd9c91b26865dbf --- 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 10:34:20,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:34:20,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:34:20,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:34:20,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:34:20,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:34:20,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:34:20,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:34:20,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:34:20,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:34:20,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:34:20,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:34:20,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:34:20,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:34:20,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:34:20,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:34:20,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:34:20,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:34:20,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:34:20,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:34:20,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:34:20,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:34:20,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:34:20,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:34:20,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:34:20,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:34:20,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:34:20,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:34:20,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:34:20,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:34:20,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:34:20,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:34:20,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:34:20,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:34:20,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:34:20,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:34:20,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:34:20,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:34:20,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:34:20,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:34:20,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:34:20,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:34:20,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:34:20,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:34:20,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:34:20,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:34:20,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:34:20,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:34:20,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:34:20,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:34:20,382 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:34:20,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:34:20,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:34:20,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:34:20,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:34:20,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:34:20,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:34:20,385 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:34:20,385 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:34:20,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:34:20,385 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:34:20,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:34:20,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:34:20,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:34:20,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:34:20,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:34:20,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:34:20,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:34:20,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:34:20,387 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:34:20,387 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:34:20,388 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:34:20,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:34:20,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:34:20,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:34:20,389 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb901e431a7ee0706f0e51d89ec94e4336f8310f955de577abd9c91b26865dbf [2022-11-20 10:34:20,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:34:20,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:34:20,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:34:20,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:34:20,817 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:34:20,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i [2022-11-20 10:34:23,944 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:34:24,906 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:34:24,906 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i [2022-11-20 10:34:24,988 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/data/21382f623/18863ab3fe1e4ff6a1064b5cd761d8c3/FLAGfa43d55ca [2022-11-20 10:34:25,009 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/data/21382f623/18863ab3fe1e4ff6a1064b5cd761d8c3 [2022-11-20 10:34:25,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:34:25,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:34:25,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:34:25,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:34:25,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:34:25,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:34:25" (1/1) ... [2022-11-20 10:34:25,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2111bd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:25, skipping insertion in model container [2022-11-20 10:34:25,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:34:25" (1/1) ... [2022-11-20 10:34:25,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:34:25,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:34:29,394 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-20 10:34:32,251 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620437,620450] [2022-11-20 10:34:32,257 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620606,620619] [2022-11-20 10:34:32,258 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620773,620786] [2022-11-20 10:34:32,259 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620941,620954] [2022-11-20 10:34:32,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:34:32,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:34:32,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:34:33,287 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620437,620450] [2022-11-20 10:34:33,287 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620606,620619] [2022-11-20 10:34:33,288 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620773,620786] [2022-11-20 10:34:33,288 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620941,620954] [2022-11-20 10:34:33,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:34:33,319 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:34:33,988 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620437,620450] [2022-11-20 10:34:33,989 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620606,620619] [2022-11-20 10:34:33,990 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620773,620786] [2022-11-20 10:34:33,990 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_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620941,620954] [2022-11-20 10:34:34,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:34:34,389 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:34:34,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34 WrapperNode [2022-11-20 10:34:34,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:34:34,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:34:34,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:34:34,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:34:34,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:34,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,045 INFO L138 Inliner]: procedures = 714, calls = 6936, calls flagged for inlining = 322, calls inlined = 303, statements flattened = 12999 [2022-11-20 10:34:35,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:34:35,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:34:35,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:34:35,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:34:35,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,625 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:34:35,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:34:35,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:34:35,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:34:35,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (1/1) ... [2022-11-20 10:34:35,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:34:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:35,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:34:35,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:34:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure PC4500_writerid [2022-11-20 10:34:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure PC4500_writerid [2022-11-20 10:34:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure reset_card [2022-11-20 10:34:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_card [2022-11-20 10:34:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-20 10:34:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure readStatusRid [2022-11-20 10:34:35,832 INFO L138 BoogieDeclarations]: Found implementation of procedure readStatusRid [2022-11-20 10:34:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-20 10:34:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure reset_airo_card [2022-11-20 10:34:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_airo_card [2022-11-20 10:34:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-20 10:34:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-20 10:34:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_cipher_crt [2022-11-20 10:34:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_cipher_crt [2022-11-20 10:34:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 10:34:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 10:34:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure wifi_setup [2022-11-20 10:34:35,835 INFO L138 BoogieDeclarations]: Found implementation of procedure wifi_setup [2022-11-20 10:34:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 10:34:35,836 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 10:34:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:34:35,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:34:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_spy_update [2022-11-20 10:34:35,837 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_spy_update [2022-11-20 10:34:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure age_mic_context [2022-11-20 10:34:35,838 INFO L138 BoogieDeclarations]: Found implementation of procedure age_mic_context [2022-11-20 10:34:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 10:34:35,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 10:34:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure setup_card [2022-11-20 10:34:35,838 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_card [2022-11-20 10:34:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure airo_networks_free [2022-11-20 10:34:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_networks_free [2022-11-20 10:34:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_should_stop [2022-11-20 10:34:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_should_stop [2022-11-20 10:34:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-20 10:34:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-20 10:34:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 10:34:35,840 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 10:34:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure airo_close [2022-11-20 10:34:35,840 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_close [2022-11-20 10:34:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_62 [2022-11-20 10:34:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_62 [2022-11-20 10:34:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure get_tx_error [2022-11-20 10:34:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure get_tx_error [2022-11-20 10:34:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure sniffing_mode [2022-11-20 10:34:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure sniffing_mode [2022-11-20 10:34:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 10:34:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 10:34:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure header_len [2022-11-20 10:34:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure header_len [2022-11-20 10:34:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2022-11-20 10:34:35,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2022-11-20 10:34:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2022-11-20 10:34:35,843 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2022-11-20 10:34:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-20 10:34:35,843 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-20 10:34:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure readSsidRid [2022-11-20 10:34:35,843 INFO L138 BoogieDeclarations]: Found implementation of procedure readSsidRid [2022-11-20 10:34:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-20 10:34:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure emmh32_final [2022-11-20 10:34:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure emmh32_final [2022-11-20 10:34:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 10:34:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 10:34:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 10:34:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 10:34:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-20 10:34:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-20 10:34:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure down_trylock [2022-11-20 10:34:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure down_trylock [2022-11-20 10:34:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-20 10:34:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-20 10:34:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 10:34:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 10:34:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 10:34:35,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 10:34:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure enable_MAC [2022-11-20 10:34:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_MAC [2022-11-20 10:34:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure OUT4500 [2022-11-20 10:34:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure OUT4500 [2022-11-20 10:34:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:34:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-20 10:34:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-20 10:34:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure mpi_send_packet [2022-11-20 10:34:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure mpi_send_packet [2022-11-20 10:34:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure PDE_DATA [2022-11-20 10:34:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE_DATA [2022-11-20 10:34:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 10:34:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:34:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-20 10:34:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-20 10:34:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:34:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure airo_ioctl [2022-11-20 10:34:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_ioctl [2022-11-20 10:34:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 10:34:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 10:34:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 10:34:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 10:34:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 10:34:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 10:34:35,852 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 10:34:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure airo_end_xmit11 [2022-11-20 10:34:35,853 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_end_xmit11 [2022-11-20 10:34:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-20 10:34:35,856 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-20 10:34:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure airo_change_mtu [2022-11-20 10:34:35,857 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_change_mtu [2022-11-20 10:34:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 10:34:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 10:34:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure disable_interrupts [2022-11-20 10:34:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_interrupts [2022-11-20 10:34:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 10:34:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 10:34:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-20 10:34:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-20 10:34:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 10:34:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 10:34:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure down_interruptible [2022-11-20 10:34:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure down_interruptible [2022-11-20 10:34:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 10:34:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 10:34:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure airo_pci_remove [2022-11-20 10:34:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_pci_remove [2022-11-20 10:34:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure aux_setup [2022-11-20 10:34:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure aux_setup [2022-11-20 10:34:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure writeConfigRid [2022-11-20 10:34:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure writeConfigRid [2022-11-20 10:34:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 10:34:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 10:34:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 10:34:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 10:34:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure readCapabilityRid [2022-11-20 10:34:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure readCapabilityRid [2022-11-20 10:34:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-20 10:34:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-20 10:34:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-11-20 10:34:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-11-20 10:34:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 10:34:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 10:34:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_netdev_mqs [2022-11-20 10:34:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_netdev_mqs [2022-11-20 10:34:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-20 10:34:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-20 10:34:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 10:34:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 10:34:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 10:34:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 10:34:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-20 10:34:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-20 10:34:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:34:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:34:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure writeWepKeyRid [2022-11-20 10:34:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure writeWepKeyRid [2022-11-20 10:34:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure proc_create_data [2022-11-20 10:34:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_create_data [2022-11-20 10:34:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:34:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2022-11-20 10:34:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2022-11-20 10:34:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure del_airo_dev [2022-11-20 10:34:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure del_airo_dev [2022-11-20 10:34:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:34:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 10:34:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 10:34:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 10:34:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 10:34:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:34:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure writeSsidRid [2022-11-20 10:34:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure writeSsidRid [2022-11-20 10:34:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 10:34:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 10:34:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure MoveWindow [2022-11-20 10:34:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure MoveWindow [2022-11-20 10:34:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 10:34:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-20 10:34:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-20 10:34:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:34:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:34:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 10:34:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-20 10:34:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-20 10:34:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_cipher_tfm [2022-11-20 10:34:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_cipher_tfm [2022-11-20 10:34:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-20 10:34:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-20 10:34:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 10:34:35,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 10:34:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure proc_close [2022-11-20 10:34:35,878 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_close [2022-11-20 10:34:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 10:34:35,878 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 10:34:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure airo_set_multicast_list [2022-11-20 10:34:35,878 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_set_multicast_list [2022-11-20 10:34:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 10:34:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 10:34:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 10:34:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 10:34:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure set_wep_key [2022-11-20 10:34:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure set_wep_key [2022-11-20 10:34:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure writeAPListRid [2022-11-20 10:34:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure writeAPListRid [2022-11-20 10:34:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 10:34:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 10:34:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 10:34:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure freezing [2022-11-20 10:34:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure freezing [2022-11-20 10:34:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:34:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:34:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure proc_stats_rid_open [2022-11-20 10:34:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_stats_rid_open [2022-11-20 10:34:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 10:34:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 10:34:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-20 10:34:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-20 10:34:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-20 10:34:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-20 10:34:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure insb [2022-11-20 10:34:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure insb [2022-11-20 10:34:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:34:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-20 10:34:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-20 10:34:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 10:34:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 10:34:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2022-11-20 10:34:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2022-11-20 10:34:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:34:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure IN4500 [2022-11-20 10:34:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure IN4500 [2022-11-20 10:34:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-20 10:34:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-20 10:34:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:34:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:34:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 10:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:34:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_aux_lock_of_airo_info [2022-11-20 10:34:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_aux_lock_of_airo_info [2022-11-20 10:34:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2022-11-20 10:34:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2022-11-20 10:34:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 10:34:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 10:34:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 10:34:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 10:34:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure bap_write [2022-11-20 10:34:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure bap_write [2022-11-20 10:34:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure _init_airo_card [2022-11-20 10:34:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure _init_airo_card [2022-11-20 10:34:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure waitbusy [2022-11-20 10:34:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure waitbusy [2022-11-20 10:34:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure decapsulate [2022-11-20 10:34:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure decapsulate [2022-11-20 10:34:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2022-11-20 10:34:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2022-11-20 10:34:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir_mode [2022-11-20 10:34:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir_mode [2022-11-20 10:34:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 10:34:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 10:34:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure readBSSListRid [2022-11-20 10:34:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure readBSSListRid [2022-11-20 10:34:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 10:34:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 10:34:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2022-11-20 10:34:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2022-11-20 10:34:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-20 10:34:35,894 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-20 10:34:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure set_wep_tx_idx [2022-11-20 10:34:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure set_wep_tx_idx [2022-11-20 10:34:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 10:34:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 10:34:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-20 10:34:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-20 10:34:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:34:35,895 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 10:34:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 10:34:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure proc_write [2022-11-20 10:34:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_write [2022-11-20 10:34:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-11-20 10:34:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-11-20 10:34:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:34:35,896 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-20 10:34:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-20 10:34:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_subtree [2022-11-20 10:34:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_subtree [2022-11-20 10:34:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_allocate [2022-11-20 10:34:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_allocate [2022-11-20 10:34:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-20 10:34:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-20 10:34:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure proc_read [2022-11-20 10:34:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_read [2022-11-20 10:34:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:34:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:34:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 10:34:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:34:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:34:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 10:34:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 10:34:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure PC4500_accessrid [2022-11-20 10:34:35,899 INFO L138 BoogieDeclarations]: Found implementation of procedure PC4500_accessrid [2022-11-20 10:34:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure airo_send_event [2022-11-20 10:34:35,899 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_send_event [2022-11-20 10:34:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 10:34:35,899 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 10:34:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 10:34:35,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 10:34:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure airo_pci_resume [2022-11-20 10:34:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_pci_resume [2022-11-20 10:34:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 10:34:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 10:34:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 10:34:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 10:34:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure hex_to_bin [2022-11-20 10:34:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure hex_to_bin [2022-11-20 10:34:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure try_auto_wep [2022-11-20 10:34:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure try_auto_wep [2022-11-20 10:34:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 10:34:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 10:34:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-20 10:34:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-20 10:34:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure bap_read [2022-11-20 10:34:35,902 INFO L138 BoogieDeclarations]: Found implementation of procedure bap_read [2022-11-20 10:34:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure issuecommand [2022-11-20 10:34:35,902 INFO L138 BoogieDeclarations]: Found implementation of procedure issuecommand [2022-11-20 10:34:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 10:34:35,902 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 10:34:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure bap_setup [2022-11-20 10:34:35,902 INFO L138 BoogieDeclarations]: Found implementation of procedure bap_setup [2022-11-20 10:34:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure readAPListRid [2022-11-20 10:34:35,903 INFO L138 BoogieDeclarations]: Found implementation of procedure readAPListRid [2022-11-20 10:34:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 10:34:35,903 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 10:34:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 10:34:35,903 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 10:34:35,903 INFO L130 BoogieDeclarations]: Found specification of procedure airo_read_stats [2022-11-20 10:34:35,903 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_read_stats [2022-11-20 10:34:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure airo_end_xmit [2022-11-20 10:34:35,904 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_end_xmit [2022-11-20 10:34:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure readConfigRid [2022-11-20 10:34:35,904 INFO L138 BoogieDeclarations]: Found implementation of procedure readConfigRid [2022-11-20 10:34:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 10:34:35,904 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 10:34:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-20 10:34:35,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-20 10:34:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 10:34:35,905 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 10:34:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure ether_setup [2022-11-20 10:34:35,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_setup [2022-11-20 10:34:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2022-11-20 10:34:35,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2022-11-20 10:34:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure airo_open [2022-11-20 10:34:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_open [2022-11-20 10:34:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure stop_airo_card [2022-11-20 10:34:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_airo_card [2022-11-20 10:34:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 10:34:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 10:34:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 10:34:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 10:34:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure emmh32_update [2022-11-20 10:34:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure emmh32_update [2022-11-20 10:34:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-20 10:34:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-20 10:34:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-11-20 10:34:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-11-20 10:34:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:34:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:34:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure readWepKeyRid [2022-11-20 10:34:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure readWepKeyRid [2022-11-20 10:34:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2022-11-20 10:34:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2022-11-20 10:34:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure mpi_unmap_card [2022-11-20 10:34:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure mpi_unmap_card [2022-11-20 10:34:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-20 10:34:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-20 10:34:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 10:34:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 10:34:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure proc_set_user [2022-11-20 10:34:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_set_user [2022-11-20 10:34:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 10:34:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 10:34:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-20 10:34:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-20 10:34:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 10:34:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 10:34:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure airo_get_stats [2022-11-20 10:34:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_get_stats [2022-11-20 10:34:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure PC4500_readrid [2022-11-20 10:34:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure PC4500_readrid [2022-11-20 10:34:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-20 10:34:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-20 10:34:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure mpi_init_descriptors [2022-11-20 10:34:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mpi_init_descriptors [2022-11-20 10:34:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure get_dec_u16 [2022-11-20 10:34:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dec_u16 [2022-11-20 10:34:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure enable_interrupts [2022-11-20 10:34:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_interrupts [2022-11-20 10:34:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 10:34:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 10:34:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure airo_read_wireless_stats [2022-11-20 10:34:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_read_wireless_stats [2022-11-20 10:34:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-20 10:34:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-20 10:34:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-20 10:34:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-20 10:34:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure airo_set_mac_address [2022-11-20 10:34:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_set_mac_address [2022-11-20 10:34:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 10:34:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 10:34:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure emmh32_init [2022-11-20 10:34:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure emmh32_init [2022-11-20 10:34:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-20 10:34:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-20 10:34:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure disable_MAC [2022-11-20 10:34:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_MAC [2022-11-20 10:34:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure readStatsRid [2022-11-20 10:34:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure readStatsRid [2022-11-20 10:34:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure encapsulate [2022-11-20 10:34:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure encapsulate [2022-11-20 10:34:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure airo_set_promisc [2022-11-20 10:34:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_set_promisc [2022-11-20 10:34:37,570 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:34:37,580 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:34:40,309 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:37:12,849 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:37:12,894 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:37:12,894 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 10:37:12,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:12 BoogieIcfgContainer [2022-11-20 10:37:12,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:37:12,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:37:12,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:37:12,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:37:12,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:34:25" (1/3) ... [2022-11-20 10:37:12,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270d7a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:37:12, skipping insertion in model container [2022-11-20 10:37:12,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:34:34" (2/3) ... [2022-11-20 10:37:12,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270d7a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:37:12, skipping insertion in model container [2022-11-20 10:37:12,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:12" (3/3) ... [2022-11-20 10:37:12,925 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i [2022-11-20 10:37:12,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:37:12,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 10:37:13,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:37:13,149 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;@7ef6ee43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:37:13,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 10:37:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 4357 states, 2845 states have (on average 1.3072056239015817) internal successors, (3719), 3012 states have internal predecessors, (3719), 1319 states have call successors, (1319), 191 states have call predecessors, (1319), 190 states have return successors, (1306), 1243 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-11-20 10:37:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 10:37:13,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:13,194 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-20 10:37:13,195 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 10:37:13,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash -487485500, now seen corresponding path program 1 times [2022-11-20 10:37:13,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:13,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081303254] [2022-11-20 10:37:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:13,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:13,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:37:13,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:37:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:20,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 3698 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:20,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 10:37:20,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:20,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081303254] [2022-11-20 10:37:20,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081303254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:20,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:20,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:37:20,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937524073] [2022-11-20 10:37:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:20,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:20,773 INFO L87 Difference]: Start difference. First operand has 4357 states, 2845 states have (on average 1.3072056239015817) internal successors, (3719), 3012 states have internal predecessors, (3719), 1319 states have call successors, (1319), 191 states have call predecessors, (1319), 190 states have return successors, (1306), 1243 states have call predecessors, (1306), 1306 states have call successors, (1306) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:37:22,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:37:24,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:37:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:28,340 INFO L93 Difference]: Finished difference Result 10848 states and 16357 transitions. [2022-11-20 10:37:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-11-20 10:37:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:28,429 INFO L225 Difference]: With dead ends: 10848 [2022-11-20 10:37:28,429 INFO L226 Difference]: Without dead ends: 6478 [2022-11-20 10:37:28,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:28,498 INFO L413 NwaCegarLoop]: 8185 mSDtfsCounter, 3035 mSDsluCounter, 21600 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1192 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3432 SdHoareTripleChecker+Valid, 29785 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1192 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:28,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3432 Valid, 29785 Invalid, 1205 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1192 Valid, 11 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 10:37:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6478 states. [2022-11-20 10:37:28,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6478 to 4328. [2022-11-20 10:37:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 2833 states have (on average 1.2979174020472997) internal successors, (3677), 2991 states have internal predecessors, (3677), 1303 states have call successors, (1303), 190 states have call predecessors, (1303), 189 states have return successors, (1300), 1237 states have call predecessors, (1300), 1300 states have call successors, (1300) [2022-11-20 10:37:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 6280 transitions. [2022-11-20 10:37:29,016 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 6280 transitions. Word has length 93 [2022-11-20 10:37:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:29,017 INFO L495 AbstractCegarLoop]: Abstraction has 4328 states and 6280 transitions. [2022-11-20 10:37:29,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:37:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 6280 transitions. [2022-11-20 10:37:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 10:37:29,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:29,034 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-20 10:37:29,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:37:29,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:29,235 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 10:37:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -212725886, now seen corresponding path program 1 times [2022-11-20 10:37:29,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:29,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937082180] [2022-11-20 10:37:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:29,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:29,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:37:29,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:37:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:36,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 3698 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:36,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-20 10:37:38,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:38,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:38,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937082180] [2022-11-20 10:37:38,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937082180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:38,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:38,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168733089] [2022-11-20 10:37:38,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:38,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:38,914 INFO L87 Difference]: Start difference. First operand 4328 states and 6280 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 10:37:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:39,740 INFO L93 Difference]: Finished difference Result 4334 states and 6285 transitions. [2022-11-20 10:37:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:37:39,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 93 [2022-11-20 10:37:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:39,771 INFO L225 Difference]: With dead ends: 4334 [2022-11-20 10:37:39,772 INFO L226 Difference]: Without dead ends: 4332 [2022-11-20 10:37:39,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:39,780 INFO L413 NwaCegarLoop]: 6274 mSDtfsCounter, 6224 mSDsluCounter, 12536 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6225 SdHoareTripleChecker+Valid, 18810 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:39,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6225 Valid, 18810 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:37:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2022-11-20 10:37:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4332. [2022-11-20 10:37:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 2836 states have (on average 1.2976022566995769) internal successors, (3680), 2994 states have internal predecessors, (3680), 1303 states have call successors, (1303), 191 states have call predecessors, (1303), 190 states have return successors, (1300), 1237 states have call predecessors, (1300), 1300 states have call successors, (1300) [2022-11-20 10:37:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 6283 transitions. [2022-11-20 10:37:40,046 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 6283 transitions. Word has length 93 [2022-11-20 10:37:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:40,049 INFO L495 AbstractCegarLoop]: Abstraction has 4332 states and 6283 transitions. [2022-11-20 10:37:40,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 10:37:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 6283 transitions. [2022-11-20 10:37:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 10:37:40,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:40,056 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-20 10:37:40,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:37:40,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:40,263 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 10:37:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash -307573343, now seen corresponding path program 1 times [2022-11-20 10:37:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:40,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813102790] [2022-11-20 10:37:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:40,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:40,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:40,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:37:40,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:37:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:45,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 3705 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:45,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-20 10:37:48,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-20 10:37:49,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:49,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813102790] [2022-11-20 10:37:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813102790] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:49,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:37:49,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:37:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803602904] [2022-11-20 10:37:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:49,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:49,318 INFO L87 Difference]: Start difference. First operand 4332 states and 6283 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:37:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:50,315 INFO L93 Difference]: Finished difference Result 4338 states and 6288 transitions. [2022-11-20 10:37:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:50,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 98 [2022-11-20 10:37:50,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:50,345 INFO L225 Difference]: With dead ends: 4338 [2022-11-20 10:37:50,346 INFO L226 Difference]: Without dead ends: 4336 [2022-11-20 10:37:50,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:37:50,354 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6251 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:50,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6251 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:37:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2022-11-20 10:37:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4336. [2022-11-20 10:37:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 2839 states have (on average 1.2972877773864038) internal successors, (3683), 2997 states have internal predecessors, (3683), 1303 states have call successors, (1303), 192 states have call predecessors, (1303), 191 states have return successors, (1300), 1237 states have call predecessors, (1300), 1300 states have call successors, (1300) [2022-11-20 10:37:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 6286 transitions. [2022-11-20 10:37:50,798 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 6286 transitions. Word has length 98 [2022-11-20 10:37:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:50,801 INFO L495 AbstractCegarLoop]: Abstraction has 4336 states and 6286 transitions. [2022-11-20 10:37:50,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:37:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 6286 transitions. [2022-11-20 10:37:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 10:37:50,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:50,809 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2022-11-20 10:37:50,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:37:51,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:51,023 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 10:37:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:51,023 INFO L85 PathProgramCache]: Analyzing trace with hash 404497058, now seen corresponding path program 1 times [2022-11-20 10:37:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:51,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206694668] [2022-11-20 10:37:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:51,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:51,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:51,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:37:51,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:37:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:56,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 3712 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:56,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 10:37:59,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 10:38:00,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206694668] [2022-11-20 10:38:00,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206694668] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:00,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:00,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:38:00,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746721527] [2022-11-20 10:38:00,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:00,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:00,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:00,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:00,970 INFO L87 Difference]: Start difference. First operand 4336 states and 6286 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:02,308 INFO L93 Difference]: Finished difference Result 4342 states and 6291 transitions. [2022-11-20 10:38:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:02,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 103 [2022-11-20 10:38:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:02,347 INFO L225 Difference]: With dead ends: 4342 [2022-11-20 10:38:02,347 INFO L226 Difference]: Without dead ends: 4340 [2022-11-20 10:38:02,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:02,355 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6250 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:02,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6250 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:38:02,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2022-11-20 10:38:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 4340. [2022-11-20 10:38:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 2842 states have (on average 1.2969739619985925) internal successors, (3686), 3000 states have internal predecessors, (3686), 1303 states have call successors, (1303), 193 states have call predecessors, (1303), 192 states have return successors, (1300), 1237 states have call predecessors, (1300), 1300 states have call successors, (1300) [2022-11-20 10:38:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 6289 transitions. [2022-11-20 10:38:02,750 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 6289 transitions. Word has length 103 [2022-11-20 10:38:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:02,750 INFO L495 AbstractCegarLoop]: Abstraction has 4340 states and 6289 transitions. [2022-11-20 10:38:02,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 6289 transitions. [2022-11-20 10:38:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 10:38:02,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:02,753 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 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] [2022-11-20 10:38:02,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-20 10:38:02,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:02,978 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 10:38:02,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:02,979 INFO L85 PathProgramCache]: Analyzing trace with hash -636887551, now seen corresponding path program 1 times [2022-11-20 10:38:02,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:02,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026348271] [2022-11-20 10:38:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:02,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:02,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:02,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:02,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 3719 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:08,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-20 10:38:11,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-20 10:38:12,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:12,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026348271] [2022-11-20 10:38:12,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026348271] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:12,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:12,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:38:12,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120198770] [2022-11-20 10:38:12,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:12,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:12,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:12,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:12,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:12,223 INFO L87 Difference]: Start difference. First operand 4340 states and 6289 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:13,221 INFO L93 Difference]: Finished difference Result 4399 states and 6346 transitions. [2022-11-20 10:38:13,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:13,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 108 [2022-11-20 10:38:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:13,262 INFO L225 Difference]: With dead ends: 4399 [2022-11-20 10:38:13,262 INFO L226 Difference]: Without dead ends: 4397 [2022-11-20 10:38:13,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:13,268 INFO L413 NwaCegarLoop]: 6285 mSDtfsCounter, 6152 mSDsluCounter, 12690 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6160 SdHoareTripleChecker+Valid, 18975 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:13,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6160 Valid, 18975 Invalid, 22 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:38:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2022-11-20 10:38:13,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4397. [2022-11-20 10:38:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 2881 states have (on average 1.2943422422769872) internal successors, (3729), 3039 states have internal predecessors, (3729), 1309 states have call successors, (1309), 205 states have call predecessors, (1309), 204 states have return successors, (1306), 1243 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-11-20 10:38:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6344 transitions. [2022-11-20 10:38:13,653 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6344 transitions. Word has length 108 [2022-11-20 10:38:13,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:13,653 INFO L495 AbstractCegarLoop]: Abstraction has 4397 states and 6344 transitions. [2022-11-20 10:38:13,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6344 transitions. [2022-11-20 10:38:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 10:38:13,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:13,656 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2022-11-20 10:38:13,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:13,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:13,879 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 10:38:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash 11697602, now seen corresponding path program 1 times [2022-11-20 10:38:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:13,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426133589] [2022-11-20 10:38:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:13,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:13,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:13,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:13,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:19,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 3726 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:19,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 10:38:22,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 10:38:23,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426133589] [2022-11-20 10:38:23,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426133589] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:23,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:23,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:38:23,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211244096] [2022-11-20 10:38:23,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:23,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:23,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:23,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:23,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:23,215 INFO L87 Difference]: Start difference. First operand 4397 states and 6344 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:24,477 INFO L93 Difference]: Finished difference Result 4403 states and 6349 transitions. [2022-11-20 10:38:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:24,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 113 [2022-11-20 10:38:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:24,514 INFO L225 Difference]: With dead ends: 4403 [2022-11-20 10:38:24,514 INFO L226 Difference]: Without dead ends: 4401 [2022-11-20 10:38:24,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:24,520 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6248 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:24,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6248 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:38:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2022-11-20 10:38:24,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 4401. [2022-11-20 10:38:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 2884 states have (on average 1.2940360610263524) internal successors, (3732), 3042 states have internal predecessors, (3732), 1309 states have call successors, (1309), 206 states have call predecessors, (1309), 205 states have return successors, (1306), 1243 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-11-20 10:38:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 6347 transitions. [2022-11-20 10:38:24,977 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 6347 transitions. Word has length 113 [2022-11-20 10:38:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:24,978 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 6347 transitions. [2022-11-20 10:38:24,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 6347 transitions. [2022-11-20 10:38:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 10:38:24,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:24,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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] [2022-11-20 10:38:25,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:25,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:25,202 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 10:38:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1594467937, now seen corresponding path program 1 times [2022-11-20 10:38:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:25,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372072591] [2022-11-20 10:38:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:25,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:25,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:25,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:25,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:31,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 3733 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:31,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-20 10:38:34,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-20 10:38:35,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372072591] [2022-11-20 10:38:35,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372072591] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:35,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:35,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:38:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805649489] [2022-11-20 10:38:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:35,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:35,488 INFO L87 Difference]: Start difference. First operand 4401 states and 6347 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:36,678 INFO L93 Difference]: Finished difference Result 4407 states and 6352 transitions. [2022-11-20 10:38:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 118 [2022-11-20 10:38:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:36,705 INFO L225 Difference]: With dead ends: 4407 [2022-11-20 10:38:36,705 INFO L226 Difference]: Without dead ends: 4405 [2022-11-20 10:38:36,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:36,711 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6247 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:36,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6247 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:38:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4405 states. [2022-11-20 10:38:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4405 to 4405. [2022-11-20 10:38:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4405 states, 2887 states have (on average 1.2937305161066852) internal successors, (3735), 3045 states have internal predecessors, (3735), 1309 states have call successors, (1309), 207 states have call predecessors, (1309), 206 states have return successors, (1306), 1243 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-11-20 10:38:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6350 transitions. [2022-11-20 10:38:37,354 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6350 transitions. Word has length 118 [2022-11-20 10:38:37,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:37,355 INFO L495 AbstractCegarLoop]: Abstraction has 4405 states and 6350 transitions. [2022-11-20 10:38:37,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6350 transitions. [2022-11-20 10:38:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 10:38:37,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:37,357 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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] [2022-11-20 10:38:37,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:37,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:37,571 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 10:38:37,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1336205086, now seen corresponding path program 1 times [2022-11-20 10:38:37,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:37,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307316517] [2022-11-20 10:38:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:37,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:37,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:37,575 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:37,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:43,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3740 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:43,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-20 10:38:46,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-20 10:38:47,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:47,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307316517] [2022-11-20 10:38:47,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307316517] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:47,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:47,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:38:47,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975462402] [2022-11-20 10:38:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:47,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:47,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:47,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:47,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:47,733 INFO L87 Difference]: Start difference. First operand 4405 states and 6350 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:48,768 INFO L93 Difference]: Finished difference Result 4411 states and 6355 transitions. [2022-11-20 10:38:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:48,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 123 [2022-11-20 10:38:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:48,790 INFO L225 Difference]: With dead ends: 4411 [2022-11-20 10:38:48,790 INFO L226 Difference]: Without dead ends: 4409 [2022-11-20 10:38:48,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:48,796 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:48,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:38:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-11-20 10:38:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-11-20 10:38:49,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 2890 states have (on average 1.2934256055363322) internal successors, (3738), 3048 states have internal predecessors, (3738), 1309 states have call successors, (1309), 208 states have call predecessors, (1309), 207 states have return successors, (1306), 1243 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-11-20 10:38:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 6353 transitions. [2022-11-20 10:38:49,436 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 6353 transitions. Word has length 123 [2022-11-20 10:38:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:49,437 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 6353 transitions. [2022-11-20 10:38:49,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:38:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 6353 transitions. [2022-11-20 10:38:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:38:49,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:49,440 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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] [2022-11-20 10:38:49,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:49,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:49,655 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 10:38:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:49,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1792792895, now seen corresponding path program 1 times [2022-11-20 10:38:49,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:49,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095597024] [2022-11-20 10:38:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:49,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:49,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:49,659 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:49,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:38:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:55,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 3747 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:55,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-20 10:38:58,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-20 10:38:59,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:59,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095597024] [2022-11-20 10:38:59,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095597024] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:59,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:59,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:38:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192737435] [2022-11-20 10:38:59,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:59,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:59,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:59,796 INFO L87 Difference]: Start difference. First operand 4409 states and 6353 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:39:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:00,974 INFO L93 Difference]: Finished difference Result 4415 states and 6358 transitions. [2022-11-20 10:39:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:39:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 128 [2022-11-20 10:39:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:00,993 INFO L225 Difference]: With dead ends: 4415 [2022-11-20 10:39:00,993 INFO L226 Difference]: Without dead ends: 4413 [2022-11-20 10:39:00,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:39:00,997 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6245 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:00,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6245 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2022-11-20 10:39:01,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4413. [2022-11-20 10:39:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 2893 states have (on average 1.2931213273418596) internal successors, (3741), 3051 states have internal predecessors, (3741), 1309 states have call successors, (1309), 209 states have call predecessors, (1309), 208 states have return successors, (1306), 1243 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-11-20 10:39:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6356 transitions. [2022-11-20 10:39:01,503 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6356 transitions. Word has length 128 [2022-11-20 10:39:01,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:01,503 INFO L495 AbstractCegarLoop]: Abstraction has 4413 states and 6356 transitions. [2022-11-20 10:39:01,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 10:39:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6356 transitions. [2022-11-20 10:39:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 10:39:01,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:01,506 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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] [2022-11-20 10:39:01,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:39:01,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:01,722 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 10:39:01,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1255934978, now seen corresponding path program 1 times [2022-11-20 10:39:01,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:01,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731635600] [2022-11-20 10:39:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:01,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:01,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:01,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:39:01,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:39:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:07,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 3754 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:39:07,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-20 10:39:11,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-20 10:39:12,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:12,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731635600] [2022-11-20 10:39:12,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731635600] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:12,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:12,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:39:12,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263781967] [2022-11-20 10:39:12,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:12,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:12,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:12,269 INFO L87 Difference]: Start difference. First operand 4413 states and 6356 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 10:39:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:13,429 INFO L93 Difference]: Finished difference Result 4419 states and 6361 transitions. [2022-11-20 10:39:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:39:13,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2022-11-20 10:39:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:13,451 INFO L225 Difference]: With dead ends: 4419 [2022-11-20 10:39:13,452 INFO L226 Difference]: Without dead ends: 4417 [2022-11-20 10:39:13,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:39:13,456 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6244 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:13,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6244 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:39:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2022-11-20 10:39:14,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 4417. [2022-11-20 10:39:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4417 states, 2896 states have (on average 1.292817679558011) internal successors, (3744), 3054 states have internal predecessors, (3744), 1309 states have call successors, (1309), 210 states have call predecessors, (1309), 209 states have return successors, (1306), 1243 states have call predecessors, (1306), 1306 states have call successors, (1306) [2022-11-20 10:39:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 6359 transitions. [2022-11-20 10:39:14,178 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 6359 transitions. Word has length 133 [2022-11-20 10:39:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:14,179 INFO L495 AbstractCegarLoop]: Abstraction has 4417 states and 6359 transitions. [2022-11-20 10:39:14,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 10:39:14,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 6359 transitions. [2022-11-20 10:39:14,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-20 10:39:14,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:14,183 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 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] [2022-11-20 10:39:14,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:39:14,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:14,398 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 10:39:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -893119899, now seen corresponding path program 1 times [2022-11-20 10:39:14,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:14,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453111118] [2022-11-20 10:39:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:14,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:14,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:14,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:39:14,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:39:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:20,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 3824 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:39:20,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-11-20 10:39:22,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:39:22,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:22,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453111118] [2022-11-20 10:39:22,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453111118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:22,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:22,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:39:22,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659231513] [2022-11-20 10:39:22,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:22,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:39:22,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:22,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:39:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:39:22,127 INFO L87 Difference]: Start difference. First operand 4417 states and 6359 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-11-20 10:39:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:34,099 INFO L93 Difference]: Finished difference Result 6639 states and 9484 transitions. [2022-11-20 10:39:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:39:34,099 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 161 [2022-11-20 10:39:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:34,124 INFO L225 Difference]: With dead ends: 6639 [2022-11-20 10:39:34,125 INFO L226 Difference]: Without dead ends: 4429 [2022-11-20 10:39:34,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:39:34,139 INFO L413 NwaCegarLoop]: 6220 mSDtfsCounter, 29 mSDsluCounter, 62052 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 68272 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:34,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 68272 Invalid, 814 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [16 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-20 10:39:34,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4429 states. [2022-11-20 10:39:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4429 to 4425. [2022-11-20 10:39:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4425 states, 2902 states have (on average 1.292212267401792) internal successors, (3750), 3060 states have internal predecessors, (3750), 1311 states have call successors, (1311), 210 states have call predecessors, (1311), 209 states have return successors, (1308), 1245 states have call predecessors, (1308), 1308 states have call successors, (1308) [2022-11-20 10:39:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 6369 transitions. [2022-11-20 10:39:34,759 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 6369 transitions. Word has length 161 [2022-11-20 10:39:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:34,760 INFO L495 AbstractCegarLoop]: Abstraction has 4425 states and 6369 transitions. [2022-11-20 10:39:34,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-11-20 10:39:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 6369 transitions. [2022-11-20 10:39:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 10:39:34,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:34,762 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 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] [2022-11-20 10:39:34,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:34,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:34,965 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 10:39:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1001169119, now seen corresponding path program 1 times [2022-11-20 10:39:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330249123] [2022-11-20 10:39:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:34,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:34,969 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:39:34,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:39:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:40,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 3761 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:39:40,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-20 10:39:44,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-20 10:39:45,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:45,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330249123] [2022-11-20 10:39:45,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330249123] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:45,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:45,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:39:45,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889660974] [2022-11-20 10:39:45,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:45,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:45,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:45,794 INFO L87 Difference]: Start difference. First operand 4425 states and 6369 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 10:39:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:46,883 INFO L93 Difference]: Finished difference Result 4431 states and 6374 transitions. [2022-11-20 10:39:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:39:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 138 [2022-11-20 10:39:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:46,906 INFO L225 Difference]: With dead ends: 4431 [2022-11-20 10:39:46,907 INFO L226 Difference]: Without dead ends: 4429 [2022-11-20 10:39:46,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:39:46,911 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6243 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:46,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6243 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4429 states. [2022-11-20 10:39:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4429 to 4429. [2022-11-20 10:39:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 2905 states have (on average 1.2919104991394148) internal successors, (3753), 3063 states have internal predecessors, (3753), 1311 states have call successors, (1311), 211 states have call predecessors, (1311), 210 states have return successors, (1308), 1245 states have call predecessors, (1308), 1308 states have call successors, (1308) [2022-11-20 10:39:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 6372 transitions. [2022-11-20 10:39:47,695 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 6372 transitions. Word has length 138 [2022-11-20 10:39:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:47,696 INFO L495 AbstractCegarLoop]: Abstraction has 4429 states and 6372 transitions. [2022-11-20 10:39:47,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 10:39:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 6372 transitions. [2022-11-20 10:39:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 10:39:47,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:47,698 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 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] [2022-11-20 10:39:47,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:47,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:47,900 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 10:39:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1954234146, now seen corresponding path program 1 times [2022-11-20 10:39:47,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:39:47,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540330600] [2022-11-20 10:39:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:47,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:39:47,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:39:47,907 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:39:47,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:39:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:53,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 3768 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:39:53,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-20 10:39:57,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-20 10:39:58,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:39:58,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540330600] [2022-11-20 10:39:58,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540330600] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:58,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:58,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:39:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226357407] [2022-11-20 10:39:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:58,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:39:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:58,849 INFO L87 Difference]: Start difference. First operand 4429 states and 6372 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 10:40:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:00,034 INFO L93 Difference]: Finished difference Result 4435 states and 6377 transitions. [2022-11-20 10:40:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:40:00,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 143 [2022-11-20 10:40:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:00,057 INFO L225 Difference]: With dead ends: 4435 [2022-11-20 10:40:00,057 INFO L226 Difference]: Without dead ends: 4431 [2022-11-20 10:40:00,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:40:00,062 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 6241 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6242 SdHoareTripleChecker+Valid, 18812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:00,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6242 Valid, 18812 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:40:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4431 states. [2022-11-20 10:40:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4431 to 4431. [2022-11-20 10:40:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 2907 states have (on average 1.2913656690746473) internal successors, (3754), 3064 states have internal predecessors, (3754), 1311 states have call successors, (1311), 212 states have call predecessors, (1311), 210 states have return successors, (1308), 1245 states have call predecessors, (1308), 1308 states have call successors, (1308) [2022-11-20 10:40:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 6373 transitions. [2022-11-20 10:40:00,901 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 6373 transitions. Word has length 143 [2022-11-20 10:40:00,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:00,901 INFO L495 AbstractCegarLoop]: Abstraction has 4431 states and 6373 transitions. [2022-11-20 10:40:00,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 10:40:00,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 6373 transitions. [2022-11-20 10:40:00,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 10:40:00,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:00,903 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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] [2022-11-20 10:40:00,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:01,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:01,105 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 10:40:01,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:01,105 INFO L85 PathProgramCache]: Analyzing trace with hash 68243329, now seen corresponding path program 1 times [2022-11-20 10:40:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:01,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682984523] [2022-11-20 10:40:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:01,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:40:01,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:01,110 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:01,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:06,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 3775 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:40:06,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-20 10:40:10,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-20 10:40:12,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:12,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682984523] [2022-11-20 10:40:12,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682984523] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:12,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:40:12,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:40:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234267210] [2022-11-20 10:40:12,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:12,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:40:12,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:12,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:40:12,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:40:12,146 INFO L87 Difference]: Start difference. First operand 4431 states and 6373 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 10:40:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:13,510 INFO L93 Difference]: Finished difference Result 4431 states and 6373 transitions. [2022-11-20 10:40:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:40:13,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 148 [2022-11-20 10:40:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:13,529 INFO L225 Difference]: With dead ends: 4431 [2022-11-20 10:40:13,529 INFO L226 Difference]: Without dead ends: 4326 [2022-11-20 10:40:13,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:40:13,533 INFO L413 NwaCegarLoop]: 6275 mSDtfsCounter, 6237 mSDsluCounter, 12534 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6237 SdHoareTripleChecker+Valid, 18809 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:13,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6237 Valid, 18809 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:40:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2022-11-20 10:40:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4326. [2022-11-20 10:40:14,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 2839 states have (on average 1.2958788305741458) internal successors, (3679), 2993 states have internal predecessors, (3679), 1286 states have call successors, (1286), 199 states have call predecessors, (1286), 199 states have return successors, (1286), 1223 states have call predecessors, (1286), 1286 states have call successors, (1286) [2022-11-20 10:40:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 6251 transitions. [2022-11-20 10:40:14,366 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 6251 transitions. Word has length 148 [2022-11-20 10:40:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:14,367 INFO L495 AbstractCegarLoop]: Abstraction has 4326 states and 6251 transitions. [2022-11-20 10:40:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 10:40:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 6251 transitions. [2022-11-20 10:40:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-20 10:40:14,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:14,380 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-20 10:40:14,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:14,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:14,595 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 10:40:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:14,595 INFO L85 PathProgramCache]: Analyzing trace with hash 439756272, now seen corresponding path program 1 times [2022-11-20 10:40:14,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:14,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354249993] [2022-11-20 10:40:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:14,601 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 10:40:14,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:14,602 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:14,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:22,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 5558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:40:22,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-20 10:40:22,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:40:22,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:22,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354249993] [2022-11-20 10:40:22,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354249993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:22,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:22,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:40:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907358389] [2022-11-20 10:40:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:22,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:40:22,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:40:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:40:22,711 INFO L87 Difference]: Start difference. First operand 4326 states and 6251 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 10:40:24,415 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 10:40:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:24,933 INFO L93 Difference]: Finished difference Result 8628 states and 12473 transitions. [2022-11-20 10:40:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:40:24,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 404 [2022-11-20 10:40:24,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:24,965 INFO L225 Difference]: With dead ends: 8628 [2022-11-20 10:40:24,965 INFO L226 Difference]: Without dead ends: 4323 [2022-11-20 10:40:24,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 402 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 10:40:24,990 INFO L413 NwaCegarLoop]: 6196 mSDtfsCounter, 0 mSDsluCounter, 6192 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12388 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:24,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12388 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 10:40:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2022-11-20 10:40:25,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 4323. [2022-11-20 10:40:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 2836 states have (on average 1.2954866008462624) internal successors, (3674), 2990 states have internal predecessors, (3674), 1286 states have call successors, (1286), 199 states have call predecessors, (1286), 199 states have return successors, (1286), 1223 states have call predecessors, (1286), 1286 states have call successors, (1286) [2022-11-20 10:40:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 6246 transitions. [2022-11-20 10:40:25,593 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 6246 transitions. Word has length 404 [2022-11-20 10:40:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:25,593 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 6246 transitions. [2022-11-20 10:40:25,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 10:40:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 6246 transitions. [2022-11-20 10:40:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-20 10:40:25,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:25,607 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-20 10:40:25,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:25,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:25,831 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 10:40:25,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:25,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1360673196, now seen corresponding path program 1 times [2022-11-20 10:40:25,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:25,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807040740] [2022-11-20 10:40:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:25,837 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 10:40:25,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:25,838 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:25,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:34,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 5558 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:40:34,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-20 10:40:34,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:40:34,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:34,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807040740] [2022-11-20 10:40:34,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807040740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:34,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:34,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:40:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649173282] [2022-11-20 10:40:34,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:34,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:40:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:40:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:40:34,675 INFO L87 Difference]: Start difference. First operand 4323 states and 6246 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 10:40:36,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:40:38,105 WARN L539 Checker$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 10:40:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:41,100 INFO L93 Difference]: Finished difference Result 10671 states and 15620 transitions. [2022-11-20 10:40:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:40:41,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 404 [2022-11-20 10:40:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:41,124 INFO L225 Difference]: With dead ends: 10671 [2022-11-20 10:40:41,124 INFO L226 Difference]: Without dead ends: 6382 [2022-11-20 10:40:41,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 400 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 10:40:41,145 INFO L413 NwaCegarLoop]: 8005 mSDtfsCounter, 2855 mSDsluCounter, 21201 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1153 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3239 SdHoareTripleChecker+Valid, 29206 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:41,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3239 Valid, 29206 Invalid, 1166 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 10:40:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2022-11-20 10:40:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 4326. [2022-11-20 10:40:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 2839 states have (on average 1.295174357168017) internal successors, (3677), 2993 states have internal predecessors, (3677), 1286 states have call successors, (1286), 199 states have call predecessors, (1286), 199 states have return successors, (1286), 1223 states have call predecessors, (1286), 1286 states have call successors, (1286) [2022-11-20 10:40:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 6249 transitions. [2022-11-20 10:40:41,936 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 6249 transitions. Word has length 404 [2022-11-20 10:40:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:41,937 INFO L495 AbstractCegarLoop]: Abstraction has 4326 states and 6249 transitions. [2022-11-20 10:40:41,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 10:40:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 6249 transitions. [2022-11-20 10:40:41,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-20 10:40:41,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:41,948 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:40:42,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:42,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:42,171 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 10:40:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:42,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1576189272, now seen corresponding path program 1 times [2022-11-20 10:40:42,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:42,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471691771] [2022-11-20 10:40:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:42,176 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 10:40:42,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:42,178 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:42,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:50,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 5289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:40:50,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-20 10:40:50,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:40:50,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:40:50,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471691771] [2022-11-20 10:40:50,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471691771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:50,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:50,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:40:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202015537] [2022-11-20 10:40:50,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:50,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:40:50,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:40:50,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:40:50,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:40:50,261 INFO L87 Difference]: Start difference. First operand 4326 states and 6249 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-20 10:40:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:50,871 INFO L93 Difference]: Finished difference Result 8615 states and 12455 transitions. [2022-11-20 10:40:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:40:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 316 [2022-11-20 10:40:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:50,885 INFO L225 Difference]: With dead ends: 8615 [2022-11-20 10:40:50,886 INFO L226 Difference]: Without dead ends: 4323 [2022-11-20 10:40:50,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 314 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 10:40:50,899 INFO L413 NwaCegarLoop]: 6194 mSDtfsCounter, 0 mSDsluCounter, 6190 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12384 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:50,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12384 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:40:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2022-11-20 10:40:51,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 4323. [2022-11-20 10:40:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 2836 states have (on average 1.2947813822284908) internal successors, (3672), 2990 states have internal predecessors, (3672), 1286 states have call successors, (1286), 199 states have call predecessors, (1286), 199 states have return successors, (1286), 1223 states have call predecessors, (1286), 1286 states have call successors, (1286) [2022-11-20 10:40:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 6244 transitions. [2022-11-20 10:40:51,655 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 6244 transitions. Word has length 316 [2022-11-20 10:40:51,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:51,656 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 6244 transitions. [2022-11-20 10:40:51,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-20 10:40:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 6244 transitions. [2022-11-20 10:40:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-20 10:40:51,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:51,667 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-20 10:40:51,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:51,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:51,868 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 10:40:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash 389047916, now seen corresponding path program 1 times [2022-11-20 10:40:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:40:51,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915285260] [2022-11-20 10:40:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:51,872 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 10:40:51,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:40:51,873 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:51,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:40:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:00,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 5558 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 10:41:00,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:41:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-11-20 10:41:02,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:41:02,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:41:02,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915285260] [2022-11-20 10:41:02,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915285260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:02,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:02,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:41:02,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239866466] [2022-11-20 10:41:02,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:02,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:41:02,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:41:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:41:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:41:02,539 INFO L87 Difference]: Start difference. First operand 4323 states and 6244 transitions. Second operand has 10 states, 10 states have (on average 18.5) internal successors, (185), 7 states have internal predecessors, (185), 3 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (53), 6 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-20 10:41:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:41:06,705 INFO L93 Difference]: Finished difference Result 9279 states and 13484 transitions. [2022-11-20 10:41:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:41:06,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 7 states have internal predecessors, (185), 3 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (53), 6 states have call predecessors, (53), 3 states have call successors, (53) Word has length 404 [2022-11-20 10:41:06,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:41:06,728 INFO L225 Difference]: With dead ends: 9279 [2022-11-20 10:41:06,728 INFO L226 Difference]: Without dead ends: 5018 [2022-11-20 10:41:06,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:41:06,741 INFO L413 NwaCegarLoop]: 7245 mSDtfsCounter, 791 mSDsluCounter, 56623 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 63868 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:41:06,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 63868 Invalid, 204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 10:41:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2022-11-20 10:41:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 4323. [2022-11-20 10:41:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 2836 states have (on average 1.2944287729196051) internal successors, (3671), 2989 states have internal predecessors, (3671), 1286 states have call successors, (1286), 199 states have call predecessors, (1286), 199 states have return successors, (1286), 1223 states have call predecessors, (1286), 1286 states have call successors, (1286) [2022-11-20 10:41:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 6243 transitions. [2022-11-20 10:41:07,399 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 6243 transitions. Word has length 404 [2022-11-20 10:41:07,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:41:07,399 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 6243 transitions. [2022-11-20 10:41:07,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 7 states have internal predecessors, (185), 3 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (53), 6 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-20 10:41:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 6243 transitions. [2022-11-20 10:41:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-20 10:41:07,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:41:07,409 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:41:07,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:07,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:07,610 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 10:41:07,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1428643228, now seen corresponding path program 1 times [2022-11-20 10:41:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:41:07,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640140219] [2022-11-20 10:41:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:07,614 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 10:41:07,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:41:07,615 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:16,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 5289 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:41:16,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:41:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-20 10:41:16,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:41:16,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:41:16,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640140219] [2022-11-20 10:41:16,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640140219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:16,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:16,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:41:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879986934] [2022-11-20 10:41:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:16,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:41:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:41:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:41:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:41:16,947 INFO L87 Difference]: Start difference. First operand 4323 states and 6243 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-20 10:41:19,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:41:21,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:41:22,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:41:22,403 INFO L93 Difference]: Finished difference Result 8612 states and 12452 transitions. [2022-11-20 10:41:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:41:22,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) Word has length 316 [2022-11-20 10:41:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:41:22,424 INFO L225 Difference]: With dead ends: 8612 [2022-11-20 10:41:22,425 INFO L226 Difference]: Without dead ends: 4330 [2022-11-20 10:41:22,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:41:22,442 INFO L413 NwaCegarLoop]: 6190 mSDtfsCounter, 5 mSDsluCounter, 24738 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30928 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:41:22,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30928 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 10:41:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2022-11-20 10:41:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 4328. [2022-11-20 10:41:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 2840 states have (on average 1.2940140845070423) internal successors, (3675), 2993 states have internal predecessors, (3675), 1286 states have call successors, (1286), 199 states have call predecessors, (1286), 200 states have return successors, (1288), 1224 states have call predecessors, (1288), 1286 states have call successors, (1288) [2022-11-20 10:41:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 6249 transitions. [2022-11-20 10:41:23,070 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 6249 transitions. Word has length 316 [2022-11-20 10:41:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:41:23,070 INFO L495 AbstractCegarLoop]: Abstraction has 4328 states and 6249 transitions. [2022-11-20 10:41:23,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-20 10:41:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 6249 transitions. [2022-11-20 10:41:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-20 10:41:23,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:41:23,084 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-20 10:41:23,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:23,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:23,299 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 10:41:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1734847486, now seen corresponding path program 1 times [2022-11-20 10:41:23,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:41:23,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988603577] [2022-11-20 10:41:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:23,303 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 10:41:23,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:41:23,304 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:23,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:32,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 5763 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:41:32,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:41:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2022-11-20 10:41:32,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:41:32,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:41:32,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988603577] [2022-11-20 10:41:32,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988603577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:32,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:32,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:41:32,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607548991] [2022-11-20 10:41:32,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:32,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:41:32,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:41:32,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:41:32,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:41:32,690 INFO L87 Difference]: Start difference. First operand 4328 states and 6249 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 10:41:34,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:41:34,216 INFO L93 Difference]: Finished difference Result 8618 states and 12654 transitions. [2022-11-20 10:41:34,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:41:34,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 440 [2022-11-20 10:41:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:41:34,231 INFO L225 Difference]: With dead ends: 8618 [2022-11-20 10:41:34,231 INFO L226 Difference]: Without dead ends: 4329 [2022-11-20 10:41:34,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 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 10:41:34,245 INFO L413 NwaCegarLoop]: 6189 mSDtfsCounter, 2 mSDsluCounter, 12343 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18532 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:41:34,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18532 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:41:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2022-11-20 10:41:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 4329. [2022-11-20 10:41:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 2841 states have (on average 1.2939105948609644) internal successors, (3676), 2994 states have internal predecessors, (3676), 1286 states have call successors, (1286), 199 states have call predecessors, (1286), 200 states have return successors, (1288), 1224 states have call predecessors, (1288), 1286 states have call successors, (1288) [2022-11-20 10:41:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 6250 transitions. [2022-11-20 10:41:34,877 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 6250 transitions. Word has length 440 [2022-11-20 10:41:34,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:41:34,878 INFO L495 AbstractCegarLoop]: Abstraction has 4329 states and 6250 transitions. [2022-11-20 10:41:34,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 10:41:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 6250 transitions. [2022-11-20 10:41:34,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-11-20 10:41:34,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:41:34,886 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-20 10:41:34,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:35,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:35,086 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 10:41:35,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash -737464824, now seen corresponding path program 1 times [2022-11-20 10:41:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:41:35,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210672753] [2022-11-20 10:41:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:35,091 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 10:41:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:41:35,092 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:35,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:44,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 5774 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:41:44,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:41:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-20 10:41:44,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:41:44,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:41:44,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210672753] [2022-11-20 10:41:44,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210672753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:44,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:44,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:41:44,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67224076] [2022-11-20 10:41:44,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:44,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:41:44,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:41:44,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:41:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:41:44,313 INFO L87 Difference]: Start difference. First operand 4329 states and 6250 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-20 10:41:45,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:41:45,172 INFO L93 Difference]: Finished difference Result 8593 states and 12417 transitions. [2022-11-20 10:41:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:41:45,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 441 [2022-11-20 10:41:45,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:41:45,188 INFO L225 Difference]: With dead ends: 8593 [2022-11-20 10:41:45,188 INFO L226 Difference]: Without dead ends: 4330 [2022-11-20 10:41:45,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 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 10:41:45,201 INFO L413 NwaCegarLoop]: 6190 mSDtfsCounter, 0 mSDsluCounter, 6185 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12375 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 10:41:45,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12375 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:41:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2022-11-20 10:41:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 4330. [2022-11-20 10:41:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 2842 states have (on average 1.2938071780436313) internal successors, (3677), 2995 states have internal predecessors, (3677), 1286 states have call successors, (1286), 199 states have call predecessors, (1286), 200 states have return successors, (1288), 1224 states have call predecessors, (1288), 1286 states have call successors, (1288) [2022-11-20 10:41:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 6251 transitions. [2022-11-20 10:41:46,083 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 6251 transitions. Word has length 441 [2022-11-20 10:41:46,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:41:46,083 INFO L495 AbstractCegarLoop]: Abstraction has 4330 states and 6251 transitions. [2022-11-20 10:41:46,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-20 10:41:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 6251 transitions. [2022-11-20 10:41:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-11-20 10:41:46,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:41:46,091 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-20 10:41:46,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-20 10:41:46,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:46,292 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 10:41:46,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 966527942, now seen corresponding path program 1 times [2022-11-20 10:41:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:41:46,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294942090] [2022-11-20 10:41:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:46,296 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 10:41:46,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:41:46,297 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:46,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:41:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:55,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 5774 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:41:55,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:41:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 349 proven. 1 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2022-11-20 10:41:56,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:41:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2022-11-20 10:41:57,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:41:57,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294942090] [2022-11-20 10:41:57,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294942090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:41:57,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:41:57,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:41:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557089334] [2022-11-20 10:41:57,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:41:57,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:41:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:41:57,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:41:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:41:57,927 INFO L87 Difference]: Start difference. First operand 4330 states and 6251 transitions. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-20 10:42:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:03,014 INFO L93 Difference]: Finished difference Result 8630 states and 12671 transitions. [2022-11-20 10:42:03,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:42:03,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 441 [2022-11-20 10:42:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:03,034 INFO L225 Difference]: With dead ends: 8630 [2022-11-20 10:42:03,034 INFO L226 Difference]: Without dead ends: 4339 [2022-11-20 10:42:03,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:42:03,059 INFO L413 NwaCegarLoop]: 6158 mSDtfsCounter, 12 mSDsluCounter, 30681 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36839 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:03,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36839 Invalid, 362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 10:42:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2022-11-20 10:42:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 4339. [2022-11-20 10:42:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4339 states, 2850 states have (on average 1.2940350877192983) internal successors, (3688), 3003 states have internal predecessors, (3688), 1286 states have call successors, (1286), 200 states have call predecessors, (1286), 201 states have return successors, (1288), 1224 states have call predecessors, (1288), 1286 states have call successors, (1288) [2022-11-20 10:42:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4339 states to 4339 states and 6262 transitions. [2022-11-20 10:42:03,786 INFO L78 Accepts]: Start accepts. Automaton has 4339 states and 6262 transitions. Word has length 441 [2022-11-20 10:42:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:03,787 INFO L495 AbstractCegarLoop]: Abstraction has 4339 states and 6262 transitions. [2022-11-20 10:42:03,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-20 10:42:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4339 states and 6262 transitions. [2022-11-20 10:42:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-20 10:42:03,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:03,798 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:03,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:42:03,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:42:03,999 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 10:42:03,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:03,999 INFO L85 PathProgramCache]: Analyzing trace with hash -46541325, now seen corresponding path program 1 times [2022-11-20 10:42:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:42:04,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930645963] [2022-11-20 10:42:04,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:04,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:42:04,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:42:04,005 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:42:04,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:42:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:13,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 5526 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:42:13,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 174 proven. 10 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-20 10:42:13,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-11-20 10:42:16,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:16,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930645963] [2022-11-20 10:42:16,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930645963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:42:16,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:42:16,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 10:42:16,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231030097] [2022-11-20 10:42:16,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:16,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:42:16,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:42:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:42:16,992 INFO L87 Difference]: Start difference. First operand 4339 states and 6262 transitions. Second operand has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-11-20 10:42:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:24,266 INFO L93 Difference]: Finished difference Result 8652 states and 12758 transitions. [2022-11-20 10:42:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:42:24,267 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 352 [2022-11-20 10:42:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:24,284 INFO L225 Difference]: With dead ends: 8652 [2022-11-20 10:42:24,284 INFO L226 Difference]: Without dead ends: 4344 [2022-11-20 10:42:24,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:42:24,304 INFO L413 NwaCegarLoop]: 6160 mSDtfsCounter, 34 mSDsluCounter, 30785 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36945 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:24,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36945 Invalid, 519 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [178 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 10:42:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2022-11-20 10:42:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4344. [2022-11-20 10:42:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 2855 states have (on average 1.2928196147110333) internal successors, (3691), 3008 states have internal predecessors, (3691), 1286 states have call successors, (1286), 200 states have call predecessors, (1286), 201 states have return successors, (1288), 1224 states have call predecessors, (1288), 1286 states have call successors, (1288) [2022-11-20 10:42:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6265 transitions. [2022-11-20 10:42:24,977 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6265 transitions. Word has length 352 [2022-11-20 10:42:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:24,977 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6265 transitions. [2022-11-20 10:42:24,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-11-20 10:42:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6265 transitions. [2022-11-20 10:42:24,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-20 10:42:24,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:24,986 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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] [2022-11-20 10:42:25,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:42:25,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:42:25,199 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 10:42:25,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1358094078, now seen corresponding path program 1 times [2022-11-20 10:42:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:42:25,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541643490] [2022-11-20 10:42:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:25,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:42:25,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:42:25,204 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:42:25,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:42:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:35,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 5831 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 10:42:35,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 388 proven. 27 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-20 10:42:37,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-20 10:42:40,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:42:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541643490] [2022-11-20 10:42:40,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541643490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:42:40,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:42:40,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2022-11-20 10:42:40,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939441016] [2022-11-20 10:42:40,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:40,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:42:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:42:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:42:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:42:40,657 INFO L87 Difference]: Start difference. First operand 4344 states and 6265 transitions. Second operand has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 11 states have internal predecessors, (223), 6 states have call successors, (83), 3 states have call predecessors, (83), 4 states have return successors, (80), 6 states have call predecessors, (80), 5 states have call successors, (80) [2022-11-20 10:42:45,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:42:47,018 WARN L539 Checker$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 10:42:54,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:43:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:14,710 INFO L93 Difference]: Finished difference Result 10036 states and 14619 transitions. [2022-11-20 10:43:14,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:43:14,711 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 11 states have internal predecessors, (223), 6 states have call successors, (83), 3 states have call predecessors, (83), 4 states have return successors, (80), 6 states have call predecessors, (80), 5 states have call successors, (80) Word has length 446 [2022-11-20 10:43:14,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:14,732 INFO L225 Difference]: With dead ends: 10036 [2022-11-20 10:43:14,732 INFO L226 Difference]: Without dead ends: 5758 [2022-11-20 10:43:14,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:43:14,743 INFO L413 NwaCegarLoop]: 8230 mSDtfsCounter, 1594 mSDsluCounter, 70655 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 760 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 78885 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:14,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 78885 Invalid, 2204 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [760 Valid, 1441 Invalid, 3 Unknown, 0 Unchecked, 31.3s Time] [2022-11-20 10:43:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2022-11-20 10:43:15,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 4358. [2022-11-20 10:43:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 2866 states have (on average 1.2920446615491974) internal successors, (3703), 3018 states have internal predecessors, (3703), 1288 states have call successors, (1288), 201 states have call predecessors, (1288), 202 states have return successors, (1293), 1227 states have call predecessors, (1293), 1288 states have call successors, (1293) [2022-11-20 10:43:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 6284 transitions. [2022-11-20 10:43:15,505 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 6284 transitions. Word has length 446 [2022-11-20 10:43:15,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:15,505 INFO L495 AbstractCegarLoop]: Abstraction has 4358 states and 6284 transitions. [2022-11-20 10:43:15,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 11 states have internal predecessors, (223), 6 states have call successors, (83), 3 states have call predecessors, (83), 4 states have return successors, (80), 6 states have call predecessors, (80), 5 states have call successors, (80) [2022-11-20 10:43:15,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 6284 transitions. [2022-11-20 10:43:15,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-20 10:43:15,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:15,516 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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] [2022-11-20 10:43:15,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:43:15,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:15,716 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 10:43:15,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:15,717 INFO L85 PathProgramCache]: Analyzing trace with hash 569888505, now seen corresponding path program 1 times [2022-11-20 10:43:15,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:43:15,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180000628] [2022-11-20 10:43:15,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:15,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:15,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:43:15,722 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:43:15,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:43:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:43:25,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 5835 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:43:25,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:43:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2022-11-20 10:43:26,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:43:26,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:43:26,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180000628] [2022-11-20 10:43:26,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180000628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:43:26,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:43:26,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:43:26,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561978496] [2022-11-20 10:43:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:43:26,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:43:26,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:43:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:43:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:43:26,017 INFO L87 Difference]: Start difference. First operand 4358 states and 6284 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 10:43:28,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:43:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:28,992 INFO L93 Difference]: Finished difference Result 8677 states and 12526 transitions. [2022-11-20 10:43:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:43:28,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 448 [2022-11-20 10:43:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:29,006 INFO L225 Difference]: With dead ends: 8677 [2022-11-20 10:43:29,006 INFO L226 Difference]: Without dead ends: 4360 [2022-11-20 10:43:29,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 445 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 10:43:29,019 INFO L413 NwaCegarLoop]: 6190 mSDtfsCounter, 3 mSDsluCounter, 12368 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18558 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:29,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18558 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 10:43:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2022-11-20 10:43:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 4360. [2022-11-20 10:43:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 2868 states have (on average 1.2918410041841004) internal successors, (3705), 3020 states have internal predecessors, (3705), 1288 states have call successors, (1288), 201 states have call predecessors, (1288), 202 states have return successors, (1293), 1227 states have call predecessors, (1293), 1288 states have call successors, (1293) [2022-11-20 10:43:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6286 transitions. [2022-11-20 10:43:29,691 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6286 transitions. Word has length 448 [2022-11-20 10:43:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:29,692 INFO L495 AbstractCegarLoop]: Abstraction has 4360 states and 6286 transitions. [2022-11-20 10:43:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 10:43:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6286 transitions. [2022-11-20 10:43:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-20 10:43:29,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:29,699 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:43:29,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:43:29,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:29,900 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 10:43:29,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash 400762291, now seen corresponding path program 2 times [2022-11-20 10:43:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:43:29,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480320713] [2022-11-20 10:43:29,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:43:29,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:29,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:43:29,905 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:43:29,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:43:35,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:43:35,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:43:35,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 3245 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:43:35,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:43:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 10:43:36,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:43:36,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:43:36,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480320713] [2022-11-20 10:43:36,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480320713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:43:36,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:43:36,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:43:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882007921] [2022-11-20 10:43:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:43:36,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:43:36,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:43:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:43:36,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:43:36,525 INFO L87 Difference]: Start difference. First operand 4360 states and 6286 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 10:43:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:38,853 INFO L93 Difference]: Finished difference Result 8683 states and 12534 transitions. [2022-11-20 10:43:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:43:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 354 [2022-11-20 10:43:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:38,872 INFO L225 Difference]: With dead ends: 8683 [2022-11-20 10:43:38,872 INFO L226 Difference]: Without dead ends: 4364 [2022-11-20 10:43:38,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:43:38,887 INFO L413 NwaCegarLoop]: 6192 mSDtfsCounter, 58 mSDsluCounter, 24607 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 30799 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:38,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 30799 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 10:43:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2022-11-20 10:43:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 4360. [2022-11-20 10:43:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 2868 states have (on average 1.2914923291492328) internal successors, (3704), 3020 states have internal predecessors, (3704), 1288 states have call successors, (1288), 201 states have call predecessors, (1288), 202 states have return successors, (1293), 1227 states have call predecessors, (1293), 1288 states have call successors, (1293) [2022-11-20 10:43:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6285 transitions. [2022-11-20 10:43:39,618 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6285 transitions. Word has length 354 [2022-11-20 10:43:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:39,618 INFO L495 AbstractCegarLoop]: Abstraction has 4360 states and 6285 transitions. [2022-11-20 10:43:39,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 10:43:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6285 transitions. [2022-11-20 10:43:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2022-11-20 10:43:39,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:39,626 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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] [2022-11-20 10:43:39,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:43:39,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:39,827 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 10:43:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1236941548, now seen corresponding path program 1 times [2022-11-20 10:43:39,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:43:39,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148126047] [2022-11-20 10:43:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:39,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:39,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:43:39,832 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:43:39,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:43:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:43:50,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 5849 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:43:50,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:43:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2022-11-20 10:43:50,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:43:50,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:43:50,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148126047] [2022-11-20 10:43:50,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148126047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:43:50,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:43:50,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:43:50,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413135483] [2022-11-20 10:43:50,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:43:50,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:43:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:43:50,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:43:50,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:43:50,629 INFO L87 Difference]: Start difference. First operand 4360 states and 6285 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-20 10:43:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:51,355 INFO L93 Difference]: Finished difference Result 8683 states and 12531 transitions. [2022-11-20 10:43:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:43:51,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 452 [2022-11-20 10:43:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:51,370 INFO L225 Difference]: With dead ends: 8683 [2022-11-20 10:43:51,370 INFO L226 Difference]: Without dead ends: 4364 [2022-11-20 10:43:51,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 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 10:43:51,384 INFO L413 NwaCegarLoop]: 6189 mSDtfsCounter, 2 mSDsluCounter, 6184 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12373 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:51,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12373 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:43:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2022-11-20 10:43:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 4361. [2022-11-20 10:43:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 2869 states have (on average 1.2913907284768211) internal successors, (3705), 3021 states have internal predecessors, (3705), 1288 states have call successors, (1288), 201 states have call predecessors, (1288), 202 states have return successors, (1293), 1227 states have call predecessors, (1293), 1288 states have call successors, (1293) [2022-11-20 10:43:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 6286 transitions. [2022-11-20 10:43:52,158 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 6286 transitions. Word has length 452 [2022-11-20 10:43:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:52,159 INFO L495 AbstractCegarLoop]: Abstraction has 4361 states and 6286 transitions. [2022-11-20 10:43:52,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-20 10:43:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 6286 transitions. [2022-11-20 10:43:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-11-20 10:43:52,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:52,168 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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] [2022-11-20 10:43:52,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:43:52,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:52,368 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 10:43:52,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:52,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1271550662, now seen corresponding path program 1 times [2022-11-20 10:43:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:43:52,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879920534] [2022-11-20 10:43:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:52,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:43:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:43:52,373 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:43:52,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:44:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:03,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 5878 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:44:03,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 358 proven. 1 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2022-11-20 10:44:03,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2022-11-20 10:44:04,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:44:04,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879920534] [2022-11-20 10:44:04,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879920534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:04,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:44:04,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 10:44:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94645179] [2022-11-20 10:44:04,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:04,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:44:04,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:44:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:44:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:44:04,259 INFO L87 Difference]: Start difference. First operand 4361 states and 6286 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 4 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) [2022-11-20 10:44:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:05,662 INFO L93 Difference]: Finished difference Result 8693 states and 12545 transitions. [2022-11-20 10:44:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:44:05,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 4 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) Word has length 460 [2022-11-20 10:44:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:05,677 INFO L225 Difference]: With dead ends: 8693 [2022-11-20 10:44:05,677 INFO L226 Difference]: Without dead ends: 4373 [2022-11-20 10:44:05,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:44:05,690 INFO L413 NwaCegarLoop]: 6193 mSDtfsCounter, 8 mSDsluCounter, 24731 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30924 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:05,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30924 Invalid, 42 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:44:05,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2022-11-20 10:44:06,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 4373. [2022-11-20 10:44:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 2878 states have (on average 1.2904794996525364) internal successors, (3714), 3030 states have internal predecessors, (3714), 1291 states have call successors, (1291), 201 states have call predecessors, (1291), 202 states have return successors, (1296), 1230 states have call predecessors, (1296), 1291 states have call successors, (1296) [2022-11-20 10:44:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6301 transitions. [2022-11-20 10:44:06,349 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6301 transitions. Word has length 460 [2022-11-20 10:44:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:06,349 INFO L495 AbstractCegarLoop]: Abstraction has 4373 states and 6301 transitions. [2022-11-20 10:44:06,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 4 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) [2022-11-20 10:44:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6301 transitions. [2022-11-20 10:44:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-11-20 10:44:06,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:06,357 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 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] [2022-11-20 10:44:06,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:44:06,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:44:06,560 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 10:44:06,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash 775639477, now seen corresponding path program 1 times [2022-11-20 10:44:06,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:44:06,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891131677] [2022-11-20 10:44:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:06,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:44:06,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:44:06,565 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:44:06,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:44:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:15,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 4966 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:44:15,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-20 10:44:17,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:44:17,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:44:17,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891131677] [2022-11-20 10:44:17,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891131677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:17,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:17,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:44:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144019133] [2022-11-20 10:44:17,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:17,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:44:17,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:44:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:44:17,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:44:17,058 INFO L87 Difference]: Start difference. First operand 4373 states and 6301 transitions. Second operand has 12 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 5 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-20 10:44:33,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:33,812 INFO L93 Difference]: Finished difference Result 9399 states and 13620 transitions. [2022-11-20 10:44:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:44:33,812 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 5 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) Word has length 401 [2022-11-20 10:44:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:33,828 INFO L225 Difference]: With dead ends: 9399 [2022-11-20 10:44:33,828 INFO L226 Difference]: Without dead ends: 5103 [2022-11-20 10:44:33,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:44:33,840 INFO L413 NwaCegarLoop]: 7204 mSDtfsCounter, 2661 mSDsluCounter, 67935 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 1418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 75139 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1418 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:33,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 75139 Invalid, 2437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1418 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-11-20 10:44:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2022-11-20 10:44:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 4381. [2022-11-20 10:44:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 2884 states have (on average 1.289875173370319) internal successors, (3720), 3036 states have internal predecessors, (3720), 1293 states have call successors, (1293), 201 states have call predecessors, (1293), 202 states have return successors, (1298), 1232 states have call predecessors, (1298), 1293 states have call successors, (1298) [2022-11-20 10:44:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6311 transitions. [2022-11-20 10:44:34,609 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6311 transitions. Word has length 401 [2022-11-20 10:44:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:34,610 INFO L495 AbstractCegarLoop]: Abstraction has 4381 states and 6311 transitions. [2022-11-20 10:44:34,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 5 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-20 10:44:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6311 transitions. [2022-11-20 10:44:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-20 10:44:34,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:34,618 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:34,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:44:34,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:44:34,819 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 10:44:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 930647336, now seen corresponding path program 1 times [2022-11-20 10:44:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:44:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895576294] [2022-11-20 10:44:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:34,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:44:34,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:44:34,824 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:44:34,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:44:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:45,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 5684 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:44:45,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 180 proven. 28 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-11-20 10:44:46,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-11-20 10:44:47,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:44:47,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895576294] [2022-11-20 10:44:47,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895576294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:47,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:44:47,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 10:44:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319195297] [2022-11-20 10:44:47,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:47,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:44:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:44:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:44:47,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:44:47,942 INFO L87 Difference]: Start difference. First operand 4381 states and 6311 transitions. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 10 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (76), 10 states have call predecessors, (76), 10 states have call successors, (76) [2022-11-20 10:44:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:52,418 INFO L93 Difference]: Finished difference Result 8745 states and 12613 transitions. [2022-11-20 10:44:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:44:52,418 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 10 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (76), 10 states have call predecessors, (76), 10 states have call successors, (76) Word has length 390 [2022-11-20 10:44:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:52,432 INFO L225 Difference]: With dead ends: 8745 [2022-11-20 10:44:52,432 INFO L226 Difference]: Without dead ends: 4405 [2022-11-20 10:44:52,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:44:52,518 INFO L413 NwaCegarLoop]: 6205 mSDtfsCounter, 20 mSDsluCounter, 61844 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 68049 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:52,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 68049 Invalid, 207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 10:44:52,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4405 states. [2022-11-20 10:44:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4405 to 4405. [2022-11-20 10:44:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4405 states, 2902 states have (on average 1.2880771881461062) internal successors, (3738), 3054 states have internal predecessors, (3738), 1299 states have call successors, (1299), 201 states have call predecessors, (1299), 202 states have return successors, (1304), 1238 states have call predecessors, (1304), 1299 states have call successors, (1304) [2022-11-20 10:44:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6341 transitions. [2022-11-20 10:44:53,268 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6341 transitions. Word has length 390 [2022-11-20 10:44:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:53,268 INFO L495 AbstractCegarLoop]: Abstraction has 4405 states and 6341 transitions. [2022-11-20 10:44:53,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 10 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (76), 10 states have call predecessors, (76), 10 states have call successors, (76) [2022-11-20 10:44:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6341 transitions. [2022-11-20 10:44:53,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-11-20 10:44:53,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:53,279 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:53,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:44:53,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:44:53,486 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:44:53,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:53,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1928720779, now seen corresponding path program 1 times [2022-11-20 10:44:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:44:53,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285167094] [2022-11-20 10:44:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:53,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:44:53,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:44:53,491 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:44:53,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 10:45:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:03,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 5262 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:45:03,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2022-11-20 10:45:03,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:03,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:45:03,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285167094] [2022-11-20 10:45:03,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285167094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:03,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:03,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:45:03,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858579685] [2022-11-20 10:45:03,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:03,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:45:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:45:03,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:45:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:45:03,700 INFO L87 Difference]: Start difference. First operand 4405 states and 6341 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-20 10:45:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:05,056 INFO L93 Difference]: Finished difference Result 9445 states and 13674 transitions. [2022-11-20 10:45:05,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:45:05,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) Word has length 468 [2022-11-20 10:45:05,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:05,148 INFO L225 Difference]: With dead ends: 9445 [2022-11-20 10:45:05,148 INFO L226 Difference]: Without dead ends: 5118 [2022-11-20 10:45:05,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:45:05,158 INFO L413 NwaCegarLoop]: 7276 mSDtfsCounter, 523 mSDsluCounter, 21011 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 28287 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:05,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 28287 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:45:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2022-11-20 10:45:05,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 4409. [2022-11-20 10:45:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 2905 states have (on average 1.2877796901893288) internal successors, (3741), 3057 states have internal predecessors, (3741), 1299 states have call successors, (1299), 201 states have call predecessors, (1299), 203 states have return successors, (1307), 1239 states have call predecessors, (1307), 1299 states have call successors, (1307) [2022-11-20 10:45:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 6347 transitions. [2022-11-20 10:45:05,927 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 6347 transitions. Word has length 468 [2022-11-20 10:45:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:05,927 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 6347 transitions. [2022-11-20 10:45:05,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-20 10:45:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 6347 transitions. [2022-11-20 10:45:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-11-20 10:45:05,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:05,939 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:06,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:06,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:06,163 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 10:45:06,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:06,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1336744695, now seen corresponding path program 1 times [2022-11-20 10:45:06,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:45:06,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301917704] [2022-11-20 10:45:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:06,166 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 10:45:06,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:45:06,167 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:06,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:15,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 5260 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:45:15,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2022-11-20 10:45:16,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:16,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:45:16,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301917704] [2022-11-20 10:45:16,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301917704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:16,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:16,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:45:16,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912453682] [2022-11-20 10:45:16,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:16,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:45:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:45:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:45:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:45:16,005 INFO L87 Difference]: Start difference. First operand 4409 states and 6347 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-20 10:45:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:17,511 INFO L93 Difference]: Finished difference Result 9451 states and 13681 transitions. [2022-11-20 10:45:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:45:17,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) Word has length 468 [2022-11-20 10:45:17,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:17,527 INFO L225 Difference]: With dead ends: 9451 [2022-11-20 10:45:17,527 INFO L226 Difference]: Without dead ends: 5120 [2022-11-20 10:45:17,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:45:17,538 INFO L413 NwaCegarLoop]: 7273 mSDtfsCounter, 523 mSDsluCounter, 21004 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 28277 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:17,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 28277 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:45:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2022-11-20 10:45:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 4410. [2022-11-20 10:45:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 2906 states have (on average 1.287680660701996) internal successors, (3742), 3057 states have internal predecessors, (3742), 1299 states have call successors, (1299), 201 states have call predecessors, (1299), 203 states have return successors, (1307), 1240 states have call predecessors, (1307), 1299 states have call successors, (1307) [2022-11-20 10:45:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 6348 transitions. [2022-11-20 10:45:18,332 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 6348 transitions. Word has length 468 [2022-11-20 10:45:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:18,333 INFO L495 AbstractCegarLoop]: Abstraction has 4410 states and 6348 transitions. [2022-11-20 10:45:18,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-20 10:45:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 6348 transitions. [2022-11-20 10:45:18,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2022-11-20 10:45:18,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:18,341 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 11, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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] [2022-11-20 10:45:18,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:18,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:18,542 INFO L420 AbstractCegarLoop]: === Iteration 33 === 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 10:45:18,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1761862410, now seen corresponding path program 1 times [2022-11-20 10:45:18,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:45:18,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836177930] [2022-11-20 10:45:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:18,547 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 10:45:18,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:45:18,548 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:18,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:31,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 6738 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:45:31,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 171 proven. 190 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2022-11-20 10:45:34,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2022-11-20 10:45:39,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:45:39,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836177930] [2022-11-20 10:45:39,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836177930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:39,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:45:39,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 10:45:39,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208764529] [2022-11-20 10:45:39,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:45:39,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:45:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:45:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:45:39,743 INFO L87 Difference]: Start difference. First operand 4410 states and 6348 transitions. Second operand has 24 states, 24 states have (on average 15.291666666666666) internal successors, (367), 24 states have internal predecessors, (367), 22 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 22 states have call predecessors, (115), 22 states have call successors, (115) [2022-11-20 10:45:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:52,888 INFO L93 Difference]: Finished difference Result 8827 states and 12726 transitions. [2022-11-20 10:45:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:45:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.291666666666666) internal successors, (367), 24 states have internal predecessors, (367), 22 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 22 states have call predecessors, (115), 22 states have call successors, (115) Word has length 665 [2022-11-20 10:45:52,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:52,900 INFO L225 Difference]: With dead ends: 8827 [2022-11-20 10:45:52,900 INFO L226 Difference]: Without dead ends: 4458 [2022-11-20 10:45:52,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1338 GetRequests, 1306 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:45:52,911 INFO L413 NwaCegarLoop]: 6229 mSDtfsCounter, 46 mSDsluCounter, 68122 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 74351 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:52,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 74351 Invalid, 636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 10:45:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2022-11-20 10:45:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 4458. [2022-11-20 10:45:53,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 2942 states have (on average 1.2841604350781781) internal successors, (3778), 3093 states have internal predecessors, (3778), 1311 states have call successors, (1311), 201 states have call predecessors, (1311), 203 states have return successors, (1319), 1252 states have call predecessors, (1319), 1311 states have call successors, (1319) [2022-11-20 10:45:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6408 transitions. [2022-11-20 10:45:53,690 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6408 transitions. Word has length 665 [2022-11-20 10:45:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:53,691 INFO L495 AbstractCegarLoop]: Abstraction has 4458 states and 6408 transitions. [2022-11-20 10:45:53,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.291666666666666) internal successors, (367), 24 states have internal predecessors, (367), 22 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 22 states have call predecessors, (115), 22 states have call successors, (115) [2022-11-20 10:45:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6408 transitions. [2022-11-20 10:45:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-11-20 10:45:53,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:53,698 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 12, 12, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:53,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:53,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:53,899 INFO L420 AbstractCegarLoop]: === Iteration 34 === 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 10:45:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1918566834, now seen corresponding path program 1 times [2022-11-20 10:45:53,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:45:53,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663046418] [2022-11-20 10:45:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:53,903 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 10:45:53,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:45:53,904 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:45:53,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:46:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:02,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 5545 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:46:02,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2022-11-20 10:46:03,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:46:03,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:46:03,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663046418] [2022-11-20 10:46:03,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663046418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:03,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:03,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:46:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658839141] [2022-11-20 10:46:03,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:03,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:46:03,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:46:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:46:03,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:03,400 INFO L87 Difference]: Start difference. First operand 4458 states and 6408 transitions. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 7 states have internal predecessors, (217), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-20 10:46:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:15,648 INFO L93 Difference]: Finished difference Result 7754 states and 11277 transitions. [2022-11-20 10:46:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:46:15,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 7 states have internal predecessors, (217), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 2 states have call successors, (64) Word has length 548 [2022-11-20 10:46:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:15,675 INFO L225 Difference]: With dead ends: 7754 [2022-11-20 10:46:15,675 INFO L226 Difference]: Without dead ends: 5831 [2022-11-20 10:46:15,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:46:15,685 INFO L413 NwaCegarLoop]: 6635 mSDtfsCounter, 2537 mSDsluCounter, 39963 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 46598 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1101 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:15,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2812 Valid, 46598 Invalid, 1803 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1101 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-20 10:46:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2022-11-20 10:46:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 4461. [2022-11-20 10:46:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4461 states, 2945 states have (on average 1.2838709677419355) internal successors, (3781), 3096 states have internal predecessors, (3781), 1311 states have call successors, (1311), 201 states have call predecessors, (1311), 203 states have return successors, (1319), 1252 states have call predecessors, (1319), 1311 states have call successors, (1319) [2022-11-20 10:46:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 6411 transitions. [2022-11-20 10:46:16,509 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 6411 transitions. Word has length 548 [2022-11-20 10:46:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:16,510 INFO L495 AbstractCegarLoop]: Abstraction has 4461 states and 6411 transitions. [2022-11-20 10:46:16,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 7 states have internal predecessors, (217), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-20 10:46:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 6411 transitions. [2022-11-20 10:46:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-20 10:46:16,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:16,517 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:16,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:46:16,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:46:16,717 INFO L420 AbstractCegarLoop]: === Iteration 35 === 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 10:46:16,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash 598725244, now seen corresponding path program 1 times [2022-11-20 10:46:16,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:46:16,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670549340] [2022-11-20 10:46:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:16,724 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 10:46:16,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:46:16,726 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:46:16,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:46:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:25,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 5249 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:46:25,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 336 proven. 3 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2022-11-20 10:46:28,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:46:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 27 proven. 39 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2022-11-20 10:46:32,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:46:32,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670549340] [2022-11-20 10:46:32,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670549340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:46:32,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:46:32,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2022-11-20 10:46:32,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752077356] [2022-11-20 10:46:32,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:46:32,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:46:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:46:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:46:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:46:32,093 INFO L87 Difference]: Start difference. First operand 4461 states and 6411 transitions. Second operand has 19 states, 18 states have (on average 14.0) internal successors, (252), 17 states have internal predecessors, (252), 7 states have call successors, (91), 2 states have call predecessors, (91), 5 states have return successors, (87), 8 states have call predecessors, (87), 7 states have call successors, (87) [2022-11-20 10:46:51,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:51,237 INFO L93 Difference]: Finished difference Result 6395 states and 9184 transitions. [2022-11-20 10:46:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:46:51,238 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 14.0) internal successors, (252), 17 states have internal predecessors, (252), 7 states have call successors, (91), 2 states have call predecessors, (91), 5 states have return successors, (87), 8 states have call predecessors, (87), 7 states have call successors, (87) Word has length 483 [2022-11-20 10:46:51,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:51,251 INFO L225 Difference]: With dead ends: 6395 [2022-11-20 10:46:51,251 INFO L226 Difference]: Without dead ends: 4451 [2022-11-20 10:46:51,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 947 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:46:51,258 INFO L413 NwaCegarLoop]: 6131 mSDtfsCounter, 90 mSDsluCounter, 85729 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 91860 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:51,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 91860 Invalid, 1064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-11-20 10:46:51,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-11-20 10:46:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 4451. [2022-11-20 10:46:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 2938 states have (on average 1.283866575901974) internal successors, (3772), 3089 states have internal predecessors, (3772), 1309 states have call successors, (1309), 200 states have call predecessors, (1309), 202 states have return successors, (1317), 1250 states have call predecessors, (1317), 1309 states have call successors, (1317) [2022-11-20 10:46:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 6398 transitions. [2022-11-20 10:46:52,130 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 6398 transitions. Word has length 483 [2022-11-20 10:46:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:52,130 INFO L495 AbstractCegarLoop]: Abstraction has 4451 states and 6398 transitions. [2022-11-20 10:46:52,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 14.0) internal successors, (252), 17 states have internal predecessors, (252), 7 states have call successors, (91), 2 states have call predecessors, (91), 5 states have return successors, (87), 8 states have call predecessors, (87), 7 states have call successors, (87) [2022-11-20 10:46:52,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 6398 transitions. [2022-11-20 10:46:52,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2022-11-20 10:46:52,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:52,138 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:52,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:46:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:46:52,343 INFO L420 AbstractCegarLoop]: === Iteration 36 === 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 10:46:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash -123784077, now seen corresponding path program 1 times [2022-11-20 10:46:52,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:46:52,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686083711] [2022-11-20 10:46:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:52,347 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 10:46:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:46:52,348 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:46:52,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:02,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 5618 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:47:02,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2354 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2022-11-20 10:47:04,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:04,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:47:04,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686083711] [2022-11-20 10:47:04,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686083711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:04,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:04,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:47:04,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993591098] [2022-11-20 10:47:04,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:04,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:47:04,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:47:04,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:47:04,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:47:04,102 INFO L87 Difference]: Start difference. First operand 4451 states and 6398 transitions. Second operand has 10 states, 10 states have (on average 18.9) internal successors, (189), 8 states have internal predecessors, (189), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (63), 4 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-20 10:47:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:07,223 INFO L93 Difference]: Finished difference Result 6831 states and 9875 transitions. [2022-11-20 10:47:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:47:07,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.9) internal successors, (189), 8 states have internal predecessors, (189), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (63), 4 states have call predecessors, (63), 2 states have call successors, (63) Word has length 630 [2022-11-20 10:47:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:07,240 INFO L225 Difference]: With dead ends: 6831 [2022-11-20 10:47:07,240 INFO L226 Difference]: Without dead ends: 5011 [2022-11-20 10:47:07,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:47:07,247 INFO L413 NwaCegarLoop]: 7017 mSDtfsCounter, 409 mSDsluCounter, 55480 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 62497 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:07,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 62497 Invalid, 85 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:47:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2022-11-20 10:47:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 4461. [2022-11-20 10:47:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4461 states, 2946 states have (on average 1.2830957230142566) internal successors, (3780), 3097 states have internal predecessors, (3780), 1309 states have call successors, (1309), 200 states have call predecessors, (1309), 204 states have return successors, (1330), 1252 states have call predecessors, (1330), 1309 states have call successors, (1330) [2022-11-20 10:47:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 6419 transitions. [2022-11-20 10:47:08,143 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 6419 transitions. Word has length 630 [2022-11-20 10:47:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:08,143 INFO L495 AbstractCegarLoop]: Abstraction has 4461 states and 6419 transitions. [2022-11-20 10:47:08,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.9) internal successors, (189), 8 states have internal predecessors, (189), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (63), 4 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-20 10:47:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 6419 transitions. [2022-11-20 10:47:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2022-11-20 10:47:08,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:08,150 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 11, 11, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:47:08,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:08,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:08,351 INFO L420 AbstractCegarLoop]: === Iteration 37 === 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 10:47:08,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:08,352 INFO L85 PathProgramCache]: Analyzing trace with hash -233390387, now seen corresponding path program 1 times [2022-11-20 10:47:08,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:47:08,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009507978] [2022-11-20 10:47:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:08,355 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 10:47:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:47:08,356 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:08,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:17,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 5459 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:47:17,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1502 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2022-11-20 10:47:19,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:19,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:47:19,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009507978] [2022-11-20 10:47:19,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009507978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:19,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:19,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:47:19,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202719983] [2022-11-20 10:47:19,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:19,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:47:19,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:47:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:47:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:47:19,306 INFO L87 Difference]: Start difference. First operand 4461 states and 6419 transitions. Second operand has 10 states, 10 states have (on average 19.0) internal successors, (190), 8 states have internal predecessors, (190), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (59), 4 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-20 10:47:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:22,424 INFO L93 Difference]: Finished difference Result 7017 states and 10168 transitions. [2022-11-20 10:47:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:47:22,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.0) internal successors, (190), 8 states have internal predecessors, (190), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (59), 4 states have call predecessors, (59), 2 states have call successors, (59) Word has length 563 [2022-11-20 10:47:22,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:22,444 INFO L225 Difference]: With dead ends: 7017 [2022-11-20 10:47:22,444 INFO L226 Difference]: Without dead ends: 5104 [2022-11-20 10:47:22,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:47:22,450 INFO L413 NwaCegarLoop]: 7123 mSDtfsCounter, 475 mSDsluCounter, 56250 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 63373 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:22,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 63373 Invalid, 85 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:47:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5104 states. [2022-11-20 10:47:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5104 to 4463. [2022-11-20 10:47:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 2948 states have (on average 1.2829036635006785) internal successors, (3782), 3098 states have internal predecessors, (3782), 1309 states have call successors, (1309), 200 states have call predecessors, (1309), 204 states have return successors, (1330), 1253 states have call predecessors, (1330), 1309 states have call successors, (1330) [2022-11-20 10:47:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6421 transitions. [2022-11-20 10:47:23,298 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6421 transitions. Word has length 563 [2022-11-20 10:47:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:23,298 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 6421 transitions. [2022-11-20 10:47:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.0) internal successors, (190), 8 states have internal predecessors, (190), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (59), 4 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-20 10:47:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6421 transitions. [2022-11-20 10:47:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-11-20 10:47:23,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:23,307 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 12, 12, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:47:23,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:23,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:23,507 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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 10:47:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash 507121929, now seen corresponding path program 1 times [2022-11-20 10:47:23,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:47:23,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904150964] [2022-11-20 10:47:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:23,512 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 10:47:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:47:23,513 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:23,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:32,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 5535 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:47:32,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2022-11-20 10:47:34,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:34,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:47:34,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904150964] [2022-11-20 10:47:34,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904150964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:34,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:34,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:47:34,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880266217] [2022-11-20 10:47:34,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:34,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:47:34,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:47:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:47:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:47:34,940 INFO L87 Difference]: Start difference. First operand 4463 states and 6421 transitions. Second operand has 13 states, 12 states have (on average 16.5) internal successors, (198), 11 states have internal predecessors, (198), 5 states have call successors, (67), 2 states have call predecessors, (67), 5 states have return successors, (61), 6 states have call predecessors, (61), 5 states have call successors, (61) [2022-11-20 10:47:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:55,397 INFO L93 Difference]: Finished difference Result 7017 states and 10166 transitions. [2022-11-20 10:47:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:47:55,397 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 16.5) internal successors, (198), 11 states have internal predecessors, (198), 5 states have call successors, (67), 2 states have call predecessors, (67), 5 states have return successors, (61), 6 states have call predecessors, (61), 5 states have call successors, (61) Word has length 581 [2022-11-20 10:47:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:55,412 INFO L225 Difference]: With dead ends: 7017 [2022-11-20 10:47:55,412 INFO L226 Difference]: Without dead ends: 5101 [2022-11-20 10:47:55,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:47:55,419 INFO L413 NwaCegarLoop]: 7044 mSDtfsCounter, 1360 mSDsluCounter, 75241 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 82285 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:55,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 82285 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [728 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 17.0s Time] [2022-11-20 10:47:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2022-11-20 10:47:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 4470. [2022-11-20 10:47:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 2953 states have (on average 1.2824246528953607) internal successors, (3787), 3103 states have internal predecessors, (3787), 1311 states have call successors, (1311), 200 states have call predecessors, (1311), 204 states have return successors, (1332), 1255 states have call predecessors, (1332), 1311 states have call successors, (1332) [2022-11-20 10:47:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6430 transitions. [2022-11-20 10:47:56,366 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6430 transitions. Word has length 581 [2022-11-20 10:47:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:56,366 INFO L495 AbstractCegarLoop]: Abstraction has 4470 states and 6430 transitions. [2022-11-20 10:47:56,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 16.5) internal successors, (198), 11 states have internal predecessors, (198), 5 states have call successors, (67), 2 states have call predecessors, (67), 5 states have return successors, (61), 6 states have call predecessors, (61), 5 states have call successors, (61) [2022-11-20 10:47:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6430 transitions. [2022-11-20 10:47:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2022-11-20 10:47:56,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:56,375 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:47:56,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:56,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:56,576 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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 10:47:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:56,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1364002473, now seen corresponding path program 1 times [2022-11-20 10:47:56,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:47:56,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589148982] [2022-11-20 10:47:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:56,580 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 10:47:56,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:47:56,581 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:47:56,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:48:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:06,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 5840 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:48:06,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3575 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 3470 trivial. 0 not checked. [2022-11-20 10:48:07,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:48:07,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:48:07,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589148982] [2022-11-20 10:48:07,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589148982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:07,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:07,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:48:07,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087667413] [2022-11-20 10:48:07,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:07,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:48:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:48:07,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:48:07,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:48:07,989 INFO L87 Difference]: Start difference. First operand 4470 states and 6430 transitions. Second operand has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (73), 4 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-20 10:48:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:11,097 INFO L93 Difference]: Finished difference Result 6645 states and 9593 transitions. [2022-11-20 10:48:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:48:11,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (73), 4 states have call predecessors, (73), 2 states have call successors, (73) Word has length 729 [2022-11-20 10:48:11,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:11,115 INFO L225 Difference]: With dead ends: 6645 [2022-11-20 10:48:11,115 INFO L226 Difference]: Without dead ends: 4935 [2022-11-20 10:48:11,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:48:11,121 INFO L413 NwaCegarLoop]: 6873 mSDtfsCounter, 343 mSDsluCounter, 54437 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 61310 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:11,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 61310 Invalid, 83 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:48:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2022-11-20 10:48:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4472. [2022-11-20 10:48:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 2955 states have (on average 1.2822335025380711) internal successors, (3789), 3104 states have internal predecessors, (3789), 1311 states have call successors, (1311), 200 states have call predecessors, (1311), 204 states have return successors, (1332), 1256 states have call predecessors, (1332), 1311 states have call successors, (1332) [2022-11-20 10:48:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6432 transitions. [2022-11-20 10:48:12,054 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6432 transitions. Word has length 729 [2022-11-20 10:48:12,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:12,054 INFO L495 AbstractCegarLoop]: Abstraction has 4472 states and 6432 transitions. [2022-11-20 10:48:12,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (73), 4 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-20 10:48:12,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6432 transitions. [2022-11-20 10:48:12,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2022-11-20 10:48:12,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:12,063 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 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, 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] [2022-11-20 10:48:12,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:48:12,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:48:12,264 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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 10:48:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:12,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1558325007, now seen corresponding path program 1 times [2022-11-20 10:48:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:48:12,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843017853] [2022-11-20 10:48:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:12,269 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 10:48:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:48:12,269 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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 10:48:12,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a5f025-ffdc-4981-98e5-c63ab3ac7455/bin/uautomizer-ug76WZFUDN/mathsat -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