./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/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_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/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_4912ae8d-a786-4499-b83c-d56800c8e6cd/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 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb --- 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 11:23:05,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:23:05,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:23:05,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:23:05,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:23:05,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:23:05,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:23:05,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:23:05,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:23:05,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:23:05,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:23:05,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:23:05,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:23:05,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:23:05,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:23:05,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:23:05,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:23:05,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:23:05,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:23:05,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:23:05,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:23:05,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:23:05,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:23:05,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:23:05,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:23:05,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:23:05,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:23:05,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:23:05,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:23:05,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:23:05,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:23:05,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:23:05,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:23:05,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:23:05,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:23:05,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:23:05,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:23:05,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:23:05,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:23:05,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:23:06,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:23:06,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:23:06,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:23:06,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:23:06,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:23:06,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:23:06,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:23:06,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:23:06,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:23:06,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:23:06,051 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:23:06,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:23:06,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:23:06,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:23:06,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:23:06,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:23:06,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:23:06,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:23:06,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:23:06,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:23:06,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:23:06,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:23:06,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:23:06,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:23:06,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:23:06,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:23:06,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:23:06,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:23:06,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:23:06,056 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:23:06,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:23:06,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:23:06,057 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb [2022-11-20 11:23:06,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:23:06,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:23:06,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:23:06,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:23:06,392 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:23:06,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-20 11:23:09,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:23:10,486 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:23:10,487 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-20 11:23:10,533 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/data/6ef88c2d0/fa8b50b1898442829d9b57d48a7007bc/FLAG7b3d85106 [2022-11-20 11:23:10,554 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/data/6ef88c2d0/fa8b50b1898442829d9b57d48a7007bc [2022-11-20 11:23:10,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:23:10,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:23:10,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:10,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:23:10,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:23:10,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:10" (1/1) ... [2022-11-20 11:23:10,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89f2f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:10, skipping insertion in model container [2022-11-20 11:23:10,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:10" (1/1) ... [2022-11-20 11:23:10,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:23:10,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:23:11,401 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 11:23:11,407 INFO L158 Benchmark]: Toolchain (without parser) took 847.88ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 99.1MB in the beginning and 147.8MB in the end (delta: -48.6MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. [2022-11-20 11:23:11,408 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 144.7MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:23:11,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 838.63ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 98.8MB in the beginning and 147.8MB in the end (delta: -49.0MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. [2022-11-20 11:23:11,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 144.7MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 838.63ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 98.8MB in the beginning and 147.8MB in the end (delta: -49.0MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/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_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/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_4912ae8d-a786-4499-b83c-d56800c8e6cd/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 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb --- 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 11:23:13,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:23:13,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:23:13,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:23:13,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:23:13,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:23:13,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:23:13,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:23:13,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:23:13,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:23:13,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:23:13,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:23:13,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:23:13,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:23:13,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:23:13,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:23:13,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:23:13,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:23:13,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:23:13,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:23:13,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:23:13,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:23:13,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:23:13,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:23:13,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:23:13,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:23:13,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:23:13,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:23:13,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:23:13,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:23:13,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:23:13,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:23:13,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:23:13,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:23:13,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:23:13,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:23:13,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:23:13,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:23:13,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:23:13,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:23:13,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:23:13,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 11:23:14,007 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:23:14,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:23:14,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:23:14,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:23:14,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:23:14,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:23:14,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:23:14,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:23:14,012 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:23:14,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:23:14,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:23:14,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:23:14,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:23:14,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:23:14,015 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:23:14,015 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:23:14,015 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:23:14,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:23:14,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:23:14,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:23:14,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:23:14,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:23:14,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:23:14,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:23:14,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:23:14,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:23:14,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:23:14,018 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:23:14,018 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:23:14,018 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:23:14,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:23:14,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:23:14,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:23:14,020 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb [2022-11-20 11:23:14,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:23:14,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:23:14,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:23:14,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:23:14,431 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:23:14,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-20 11:23:17,532 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:23:18,217 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:23:18,217 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-20 11:23:18,271 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/data/54ce6af9b/37992df7c12c4e24af659648f3c835a5/FLAG7b203c3f8 [2022-11-20 11:23:18,303 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/data/54ce6af9b/37992df7c12c4e24af659648f3c835a5 [2022-11-20 11:23:18,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:23:18,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:23:18,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:18,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:23:18,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:23:18,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:18,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1748f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:18, skipping insertion in model container [2022-11-20 11:23:18,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:18" (1/1) ... [2022-11-20 11:23:18,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:23:18,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:23:21,314 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2022-11-20 11:23:21,319 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2022-11-20 11:23:21,319 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2022-11-20 11:23:21,320 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2022-11-20 11:23:21,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:21,400 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:23:21,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:23:21,941 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2022-11-20 11:23:21,942 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2022-11-20 11:23:21,943 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2022-11-20 11:23:21,943 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2022-11-20 11:23:21,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:22,002 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:23:22,435 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2022-11-20 11:23:22,436 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2022-11-20 11:23:22,436 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2022-11-20 11:23:22,437 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_4912ae8d-a786-4499-b83c-d56800c8e6cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2022-11-20 11:23:22,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:22,879 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:23:22,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22 WrapperNode [2022-11-20 11:23:22,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:22,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:23:22,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:23:22,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:23:22,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,258 INFO L138 Inliner]: procedures = 439, calls = 2568, calls flagged for inlining = 197, calls inlined = 146, statements flattened = 4754 [2022-11-20 11:23:23,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:23:23,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:23:23,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:23:23,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:23:23,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:23:23,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:23:23,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:23:23,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:23:23,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (1/1) ... [2022-11-20 11:23:23,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:23:23,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:23:23,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:23:23,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:23:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-20 11:23:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-20 11:23:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 11:23:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 11:23:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-20 11:23:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-20 11:23:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:23:23,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:23:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 11:23:23,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 11:23:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 11:23:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 11:23:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2022-11-20 11:23:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2022-11-20 11:23:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 11:23:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 11:23:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_59 [2022-11-20 11:23:23,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_59 [2022-11-20 11:23:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2022-11-20 11:23:23,720 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2022-11-20 11:23:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-20 11:23:23,721 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-20 11:23:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 11:23:23,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 11:23:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 11:23:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 11:23:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_49 [2022-11-20 11:23:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_49 [2022-11-20 11:23:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-20 11:23:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-20 11:23:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 11:23:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 11:23:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 11:23:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 11:23:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:23:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-20 11:23:23,724 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-20 11:23:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 11:23:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:23:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 11:23:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 11:23:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2022-11-20 11:23:23,725 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2022-11-20 11:23:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 11:23:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 11:23:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 11:23:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 11:23:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 11:23:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2022-11-20 11:23:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2022-11-20 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 11:23:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 11:23:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 11:23:23,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 11:23:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2022-11-20 11:23:23,728 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2022-11-20 11:23:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-11-20 11:23:23,728 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-11-20 11:23:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2022-11-20 11:23:23,729 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2022-11-20 11:23:23,729 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2022-11-20 11:23:23,730 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2022-11-20 11:23:23,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 11:23:23,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 11:23:23,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:23:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 11:23:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 11:23:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 11:23:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 11:23:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-20 11:23:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-20 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-20 11:23:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-20 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 11:23:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-20 11:23:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-20 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-20 11:23:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-20 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2022-11-20 11:23:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2022-11-20 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-20 11:23:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-20 11:23:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 11:23:23,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 11:23:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 11:23:23,736 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 11:23:23,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 11:23:23,737 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:23:23,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:23:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-20 11:23:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-20 11:23:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 11:23:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 11:23:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2022-11-20 11:23:23,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2022-11-20 11:23:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 11:23:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-20 11:23:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-20 11:23:23,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:23:23,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:23:23,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 11:23:23,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:23:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2022-11-20 11:23:23,753 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2022-11-20 11:23:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 11:23:23,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 11:23:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2022-11-20 11:23:23,753 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2022-11-20 11:23:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 11:23:23,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 11:23:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-20 11:23:23,754 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-20 11:23:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2022-11-20 11:23:23,754 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2022-11-20 11:23:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2022-11-20 11:23:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2022-11-20 11:23:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-20 11:23:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-20 11:23:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-20 11:23:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-20 11:23:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2022-11-20 11:23:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2022-11-20 11:23:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 11:23:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 11:23:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2022-11-20 11:23:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2022-11-20 11:23:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 11:23:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 11:23:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:23:23,757 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:23:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2022-11-20 11:23:23,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2022-11-20 11:23:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-20 11:23:23,757 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-20 11:23:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2022-11-20 11:23:23,757 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2022-11-20 11:23:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:23:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2022-11-20 11:23:23,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2022-11-20 11:23:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:23:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 11:23:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2022-11-20 11:23:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2022-11-20 11:23:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 11:23:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2022-11-20 11:23:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2022-11-20 11:23:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 11:23:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:23:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:23:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2022-11-20 11:23:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2022-11-20 11:23:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 11:23:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 11:23:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2022-11-20 11:23:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2022-11-20 11:23:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2022-11-20 11:23:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2022-11-20 11:23:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-20 11:23:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-20 11:23:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2022-11-20 11:23:23,761 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2022-11-20 11:23:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 11:23:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 11:23:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 11:23:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 11:23:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 11:23:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 11:23:23,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 11:23:23,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 11:23:23,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 11:23:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 11:23:23,763 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2022-11-20 11:23:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2022-11-20 11:23:23,763 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-20 11:23:23,763 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-20 11:23:23,763 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 11:23:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 11:23:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:23:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:23:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-20 11:23:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-20 11:23:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-20 11:23:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-20 11:23:23,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 11:23:23,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 11:23:23,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 11:23:23,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 11:23:23,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:23:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:23:23,765 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 11:23:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 11:23:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2022-11-20 11:23:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2022-11-20 11:23:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2022-11-20 11:23:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2022-11-20 11:23:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2022-11-20 11:23:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2022-11-20 11:23:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 11:23:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 11:23:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2022-11-20 11:23:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2022-11-20 11:23:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 11:23:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 11:23:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-20 11:23:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-20 11:23:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2022-11-20 11:23:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2022-11-20 11:23:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2022-11-20 11:23:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2022-11-20 11:23:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 11:23:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 11:23:24,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:23:24,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:23:24,882 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 11:23:53,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 11:23:53,648 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:23:53,666 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:23:53,666 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:23:53,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:23:53 BoogieIcfgContainer [2022-11-20 11:23:53,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:23:53,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:23:53,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:23:53,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:23:53,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:23:18" (1/3) ... [2022-11-20 11:23:53,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddae464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:23:53, skipping insertion in model container [2022-11-20 11:23:53,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:22" (2/3) ... [2022-11-20 11:23:53,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddae464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:23:53, skipping insertion in model container [2022-11-20 11:23:53,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:23:53" (3/3) ... [2022-11-20 11:23:53,679 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2022-11-20 11:23:53,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:23:53,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 11:23:53,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:23:53,783 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;@482760ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:23:53,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:23:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 1676 states, 1158 states have (on average 1.3177892918825562) internal successors, (1526), 1174 states have internal predecessors, (1526), 419 states have call successors, (419), 97 states have call predecessors, (419), 96 states have return successors, (412), 409 states have call predecessors, (412), 412 states have call successors, (412) [2022-11-20 11:23:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 11:23:53,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:23:53,832 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:53,832 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 11:23:53,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1166096181, now seen corresponding path program 1 times [2022-11-20 11:23:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:23:53,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503064783] [2022-11-20 11:23:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:53,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:23:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:23:53,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:23:53,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:23:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:55,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:23:55,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:23:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2022-11-20 11:23:55,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:23:55,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:23:55,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503064783] [2022-11-20 11:23:55,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503064783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:55,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:55,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:23:55,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017220195] [2022-11-20 11:23:55,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:55,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:23:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:23:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:23:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:23:55,982 INFO L87 Difference]: Start difference. First operand has 1676 states, 1158 states have (on average 1.3177892918825562) internal successors, (1526), 1174 states have internal predecessors, (1526), 419 states have call successors, (419), 97 states have call predecessors, (419), 96 states have return successors, (412), 409 states have call predecessors, (412), 412 states have call successors, (412) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 11:23:56,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:23:56,828 INFO L93 Difference]: Finished difference Result 4754 states and 6919 transitions. [2022-11-20 11:23:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:23:56,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 241 [2022-11-20 11:23:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:23:56,864 INFO L225 Difference]: With dead ends: 4754 [2022-11-20 11:23:56,864 INFO L226 Difference]: Without dead ends: 3110 [2022-11-20 11:23:56,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:23:56,889 INFO L413 NwaCegarLoop]: 2698 mSDtfsCounter, 2160 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:23:56,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 4880 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:23:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2022-11-20 11:23:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3106. [2022-11-20 11:23:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 2170 states have (on average 1.319815668202765) internal successors, (2864), 2200 states have internal predecessors, (2864), 750 states have call successors, (750), 184 states have call predecessors, (750), 183 states have return successors, (746), 740 states have call predecessors, (746), 746 states have call successors, (746) [2022-11-20 11:23:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4360 transitions. [2022-11-20 11:23:57,160 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4360 transitions. Word has length 241 [2022-11-20 11:23:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:23:57,162 INFO L495 AbstractCegarLoop]: Abstraction has 3106 states and 4360 transitions. [2022-11-20 11:23:57,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 11:23:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4360 transitions. [2022-11-20 11:23:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 11:23:57,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:23:57,170 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:23:57,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:23:57,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:23:57,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 11:23:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:23:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1020927978, now seen corresponding path program 1 times [2022-11-20 11:23:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:23:57,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656425845] [2022-11-20 11:23:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:23:57,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:23:57,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:23:57,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:23:57,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:23:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:23:59,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 2218 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:23:59,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:23:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2022-11-20 11:23:59,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:23:59,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:23:59,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656425845] [2022-11-20 11:23:59,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656425845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:23:59,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:23:59,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:23:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996588234] [2022-11-20 11:23:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:23:59,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:23:59,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:23:59,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:23:59,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:23:59,394 INFO L87 Difference]: Start difference. First operand 3106 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 11:24:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:00,072 INFO L93 Difference]: Finished difference Result 5988 states and 8388 transitions. [2022-11-20 11:24:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:00,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 257 [2022-11-20 11:24:00,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:00,097 INFO L225 Difference]: With dead ends: 5988 [2022-11-20 11:24:00,098 INFO L226 Difference]: Without dead ends: 2925 [2022-11-20 11:24:00,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:00,116 INFO L413 NwaCegarLoop]: 2200 mSDtfsCounter, 2108 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:00,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 2282 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:24:00,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2022-11-20 11:24:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 2925. [2022-11-20 11:24:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2051 states have (on average 1.3154558751828376) internal successors, (2698), 2063 states have internal predecessors, (2698), 696 states have call successors, (696), 176 states have call predecessors, (696), 175 states have return successors, (692), 692 states have call predecessors, (692), 692 states have call successors, (692) [2022-11-20 11:24:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4086 transitions. [2022-11-20 11:24:00,440 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4086 transitions. Word has length 257 [2022-11-20 11:24:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:00,442 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 4086 transitions. [2022-11-20 11:24:00,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 11:24:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4086 transitions. [2022-11-20 11:24:00,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-20 11:24:00,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:00,456 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:00,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 11:24:00,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:00,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 11:24:00,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1982393, now seen corresponding path program 1 times [2022-11-20 11:24:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:00,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350295902] [2022-11-20 11:24:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:00,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:00,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:00,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:02,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:24:02,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2022-11-20 11:24:02,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:02,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:02,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350295902] [2022-11-20 11:24:02,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350295902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:02,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:02,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076710471] [2022-11-20 11:24:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:02,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:02,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:02,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:02,832 INFO L87 Difference]: Start difference. First operand 2925 states and 4086 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-20 11:24:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:03,686 INFO L93 Difference]: Finished difference Result 7184 states and 10029 transitions. [2022-11-20 11:24:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:03,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 266 [2022-11-20 11:24:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:03,770 INFO L225 Difference]: With dead ends: 7184 [2022-11-20 11:24:03,770 INFO L226 Difference]: Without dead ends: 4323 [2022-11-20 11:24:03,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:03,792 INFO L413 NwaCegarLoop]: 2615 mSDtfsCounter, 1989 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 4773 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:03,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 4773 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:24:03,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2022-11-20 11:24:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 4299. [2022-11-20 11:24:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 2996 states have (on average 1.3117489986648865) internal successors, (3930), 3017 states have internal predecessors, (3930), 1031 states have call successors, (1031), 270 states have call predecessors, (1031), 269 states have return successors, (1027), 1022 states have call predecessors, (1027), 1027 states have call successors, (1027) [2022-11-20 11:24:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 5988 transitions. [2022-11-20 11:24:04,170 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 5988 transitions. Word has length 266 [2022-11-20 11:24:04,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:04,173 INFO L495 AbstractCegarLoop]: Abstraction has 4299 states and 5988 transitions. [2022-11-20 11:24:04,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-20 11:24:04,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 5988 transitions. [2022-11-20 11:24:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-20 11:24:04,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:04,187 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:04,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:04,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:04,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 11:24:04,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash 60571946, now seen corresponding path program 1 times [2022-11-20 11:24:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:04,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260572285] [2022-11-20 11:24:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:04,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:04,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:04,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:04,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:06,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:24:06,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2022-11-20 11:24:06,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:06,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:06,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260572285] [2022-11-20 11:24:06,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260572285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:06,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:06,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:06,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87404235] [2022-11-20 11:24:06,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:06,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:06,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:06,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:06,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:06,413 INFO L87 Difference]: Start difference. First operand 4299 states and 5988 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 11:24:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:07,599 INFO L93 Difference]: Finished difference Result 9047 states and 12426 transitions. [2022-11-20 11:24:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:07,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 311 [2022-11-20 11:24:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:07,635 INFO L225 Difference]: With dead ends: 9047 [2022-11-20 11:24:07,635 INFO L226 Difference]: Without dead ends: 4812 [2022-11-20 11:24:07,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:07,661 INFO L413 NwaCegarLoop]: 2405 mSDtfsCounter, 905 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:07,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 4504 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:24:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4812 states. [2022-11-20 11:24:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4812 to 4786. [2022-11-20 11:24:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4786 states, 3312 states have (on average 1.2810990338164252) internal successors, (4243), 3344 states have internal predecessors, (4243), 1111 states have call successors, (1111), 361 states have call predecessors, (1111), 360 states have return successors, (1107), 1090 states have call predecessors, (1107), 1107 states have call successors, (1107) [2022-11-20 11:24:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 6461 transitions. [2022-11-20 11:24:08,179 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 6461 transitions. Word has length 311 [2022-11-20 11:24:08,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:08,180 INFO L495 AbstractCegarLoop]: Abstraction has 4786 states and 6461 transitions. [2022-11-20 11:24:08,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 11:24:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 6461 transitions. [2022-11-20 11:24:08,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-20 11:24:08,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:08,189 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 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] [2022-11-20 11:24:08,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:24:08,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:08,403 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 11:24:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash -630837794, now seen corresponding path program 1 times [2022-11-20 11:24:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:08,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226772616] [2022-11-20 11:24:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:08,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:08,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:08,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:08,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:09,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:24:09,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2022-11-20 11:24:10,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:10,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:10,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226772616] [2022-11-20 11:24:10,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226772616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:10,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:10,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552629767] [2022-11-20 11:24:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:10,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:10,117 INFO L87 Difference]: Start difference. First operand 4786 states and 6461 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 11:24:11,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:11,114 INFO L93 Difference]: Finished difference Result 12670 states and 17240 transitions. [2022-11-20 11:24:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:11,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 302 [2022-11-20 11:24:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:11,169 INFO L225 Difference]: With dead ends: 12670 [2022-11-20 11:24:11,169 INFO L226 Difference]: Without dead ends: 8337 [2022-11-20 11:24:11,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:11,187 INFO L413 NwaCegarLoop]: 4050 mSDtfsCounter, 1870 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 6191 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:11,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 6191 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:24:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2022-11-20 11:24:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 8333. [2022-11-20 11:24:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8333 states, 5812 states have (on average 1.291465932553338) internal successors, (7506), 5850 states have internal predecessors, (7506), 1911 states have call successors, (1911), 608 states have call predecessors, (1911), 607 states have return successors, (1907), 1890 states have call predecessors, (1907), 1907 states have call successors, (1907) [2022-11-20 11:24:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8333 states to 8333 states and 11324 transitions. [2022-11-20 11:24:11,849 INFO L78 Accepts]: Start accepts. Automaton has 8333 states and 11324 transitions. Word has length 302 [2022-11-20 11:24:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:11,850 INFO L495 AbstractCegarLoop]: Abstraction has 8333 states and 11324 transitions. [2022-11-20 11:24:11,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 11:24:11,851 INFO L276 IsEmpty]: Start isEmpty. Operand 8333 states and 11324 transitions. [2022-11-20 11:24:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-20 11:24:11,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:11,863 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 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] [2022-11-20 11:24:11,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:12,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:12,076 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 11:24:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash 755365600, now seen corresponding path program 1 times [2022-11-20 11:24:12,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:12,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611821166] [2022-11-20 11:24:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:12,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:12,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:12,080 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:12,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:13,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:24:13,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2022-11-20 11:24:15,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:15,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:15,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611821166] [2022-11-20 11:24:15,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611821166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:15,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:15,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:24:15,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037754050] [2022-11-20 11:24:15,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:15,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:24:15,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:15,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:24:15,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:24:15,686 INFO L87 Difference]: Start difference. First operand 8333 states and 11324 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-11-20 11:24:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:16,516 INFO L93 Difference]: Finished difference Result 8339 states and 11329 transitions. [2022-11-20 11:24:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:24:16,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 302 [2022-11-20 11:24:16,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:16,566 INFO L225 Difference]: With dead ends: 8339 [2022-11-20 11:24:16,566 INFO L226 Difference]: Without dead ends: 8337 [2022-11-20 11:24:16,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:24:16,573 INFO L413 NwaCegarLoop]: 2177 mSDtfsCounter, 2058 mSDsluCounter, 4345 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 6522 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:16,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 6522 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:24:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2022-11-20 11:24:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 8337. [2022-11-20 11:24:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8337 states, 5815 states have (on average 1.2913155631986242) internal successors, (7509), 5853 states have internal predecessors, (7509), 1911 states have call successors, (1911), 609 states have call predecessors, (1911), 608 states have return successors, (1907), 1890 states have call predecessors, (1907), 1907 states have call successors, (1907) [2022-11-20 11:24:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 11327 transitions. [2022-11-20 11:24:17,301 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 11327 transitions. Word has length 302 [2022-11-20 11:24:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:17,302 INFO L495 AbstractCegarLoop]: Abstraction has 8337 states and 11327 transitions. [2022-11-20 11:24:17,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-11-20 11:24:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 11327 transitions. [2022-11-20 11:24:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-20 11:24:17,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:17,307 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 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] [2022-11-20 11:24:17,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:17,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:17,531 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 11:24:17,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash 593394260, now seen corresponding path program 1 times [2022-11-20 11:24:17,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:17,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358573598] [2022-11-20 11:24:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:17,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:17,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:17,535 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:17,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:18,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2289 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:24:18,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2022-11-20 11:24:21,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:24:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2022-11-20 11:24:22,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:22,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358573598] [2022-11-20 11:24:22,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358573598] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:22,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:22,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 11:24:22,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863318484] [2022-11-20 11:24:22,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:22,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:24:22,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:22,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:24:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:24:22,372 INFO L87 Difference]: Start difference. First operand 8337 states and 11327 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 11:24:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:23,335 INFO L93 Difference]: Finished difference Result 8343 states and 11332 transitions. [2022-11-20 11:24:23,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:24:23,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 307 [2022-11-20 11:24:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:23,373 INFO L225 Difference]: With dead ends: 8343 [2022-11-20 11:24:23,373 INFO L226 Difference]: Without dead ends: 8341 [2022-11-20 11:24:23,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:24:23,379 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2102 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:23,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 6524 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:24:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2022-11-20 11:24:24,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 8341. [2022-11-20 11:24:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 5818 states have (on average 1.2911653489171537) internal successors, (7512), 5856 states have internal predecessors, (7512), 1911 states have call successors, (1911), 610 states have call predecessors, (1911), 609 states have return successors, (1907), 1890 states have call predecessors, (1907), 1907 states have call successors, (1907) [2022-11-20 11:24:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 11330 transitions. [2022-11-20 11:24:24,266 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 11330 transitions. Word has length 307 [2022-11-20 11:24:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:24,268 INFO L495 AbstractCegarLoop]: Abstraction has 8341 states and 11330 transitions. [2022-11-20 11:24:24,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-20 11:24:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 11330 transitions. [2022-11-20 11:24:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-20 11:24:24,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:24,273 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 3, 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] [2022-11-20 11:24:24,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:24,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:24,487 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 11:24:24,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash 920351782, now seen corresponding path program 1 times [2022-11-20 11:24:24,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:24,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415500800] [2022-11-20 11:24:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:24,490 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 11:24:24,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:24,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:24,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:25,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 2352 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:24:25,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1727 trivial. 0 not checked. [2022-11-20 11:24:26,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:26,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415500800] [2022-11-20 11:24:26,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415500800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:26,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:26,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521193173] [2022-11-20 11:24:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:26,100 INFO L87 Difference]: Start difference. First operand 8341 states and 11330 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-20 11:24:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:27,450 INFO L93 Difference]: Finished difference Result 19807 states and 27014 transitions. [2022-11-20 11:24:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:27,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 322 [2022-11-20 11:24:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:27,507 INFO L225 Difference]: With dead ends: 19807 [2022-11-20 11:24:27,507 INFO L226 Difference]: Without dead ends: 11919 [2022-11-20 11:24:27,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:27,544 INFO L413 NwaCegarLoop]: 4059 mSDtfsCounter, 1898 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 6202 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:27,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 6202 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:24:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11919 states. [2022-11-20 11:24:28,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11919 to 11892. [2022-11-20 11:24:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11892 states, 8322 states have (on average 1.295241528478731) internal successors, (10779), 8366 states have internal predecessors, (10779), 2711 states have call successors, (2711), 857 states have call predecessors, (2711), 856 states have return successors, (2707), 2690 states have call predecessors, (2707), 2707 states have call successors, (2707) [2022-11-20 11:24:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11892 states to 11892 states and 16197 transitions. [2022-11-20 11:24:28,883 INFO L78 Accepts]: Start accepts. Automaton has 11892 states and 16197 transitions. Word has length 322 [2022-11-20 11:24:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:28,884 INFO L495 AbstractCegarLoop]: Abstraction has 11892 states and 16197 transitions. [2022-11-20 11:24:28,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-20 11:24:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 11892 states and 16197 transitions. [2022-11-20 11:24:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-20 11:24:28,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:28,888 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 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] [2022-11-20 11:24:28,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:29,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:29,111 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 11:24:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1259399392, now seen corresponding path program 1 times [2022-11-20 11:24:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:29,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674767380] [2022-11-20 11:24:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:29,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:29,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:29,117 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:29,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:30,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:24:30,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2022-11-20 11:24:33,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:24:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2022-11-20 11:24:34,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:34,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674767380] [2022-11-20 11:24:34,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674767380] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:34,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:34,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 11:24:34,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149090221] [2022-11-20 11:24:34,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:34,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:24:34,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:34,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:24:34,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:24:34,065 INFO L87 Difference]: Start difference. First operand 11892 states and 16197 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 11:24:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:35,101 INFO L93 Difference]: Finished difference Result 11898 states and 16202 transitions. [2022-11-20 11:24:35,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:24:35,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 312 [2022-11-20 11:24:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:35,148 INFO L225 Difference]: With dead ends: 11898 [2022-11-20 11:24:35,149 INFO L226 Difference]: Without dead ends: 11896 [2022-11-20 11:24:35,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:24:35,155 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2102 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:35,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 6524 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:24:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11896 states. [2022-11-20 11:24:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11896 to 11896. [2022-11-20 11:24:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11896 states, 8325 states have (on average 1.2951351351351352) internal successors, (10782), 8369 states have internal predecessors, (10782), 2711 states have call successors, (2711), 858 states have call predecessors, (2711), 857 states have return successors, (2707), 2690 states have call predecessors, (2707), 2707 states have call successors, (2707) [2022-11-20 11:24:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11896 states to 11896 states and 16200 transitions. [2022-11-20 11:24:36,164 INFO L78 Accepts]: Start accepts. Automaton has 11896 states and 16200 transitions. Word has length 312 [2022-11-20 11:24:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:36,165 INFO L495 AbstractCegarLoop]: Abstraction has 11896 states and 16200 transitions. [2022-11-20 11:24:36,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 11:24:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 11896 states and 16200 transitions. [2022-11-20 11:24:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-20 11:24:36,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:36,169 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:36,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:36,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:36,391 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 11:24:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 765047188, now seen corresponding path program 1 times [2022-11-20 11:24:36,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:36,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563377503] [2022-11-20 11:24:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:36,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:36,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:36,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:36,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:38,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:24:38,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked. [2022-11-20 11:24:40,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:24:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked. [2022-11-20 11:24:41,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:41,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563377503] [2022-11-20 11:24:41,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563377503] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:41,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:41,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 11:24:41,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553220559] [2022-11-20 11:24:41,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:41,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:24:41,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:24:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:24:41,296 INFO L87 Difference]: Start difference. First operand 11896 states and 16200 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 11:24:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:42,483 INFO L93 Difference]: Finished difference Result 11902 states and 16205 transitions. [2022-11-20 11:24:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:24:42,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 317 [2022-11-20 11:24:42,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:42,530 INFO L225 Difference]: With dead ends: 11902 [2022-11-20 11:24:42,530 INFO L226 Difference]: Without dead ends: 11900 [2022-11-20 11:24:42,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:24:42,537 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2102 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2107 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:42,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2107 Valid, 6524 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:24:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11900 states. [2022-11-20 11:24:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11900 to 11900. [2022-11-20 11:24:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11900 states, 8328 states have (on average 1.2950288184438041) internal successors, (10785), 8372 states have internal predecessors, (10785), 2711 states have call successors, (2711), 859 states have call predecessors, (2711), 858 states have return successors, (2707), 2690 states have call predecessors, (2707), 2707 states have call successors, (2707) [2022-11-20 11:24:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11900 states to 11900 states and 16203 transitions. [2022-11-20 11:24:43,651 INFO L78 Accepts]: Start accepts. Automaton has 11900 states and 16203 transitions. Word has length 317 [2022-11-20 11:24:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:43,652 INFO L495 AbstractCegarLoop]: Abstraction has 11900 states and 16203 transitions. [2022-11-20 11:24:43,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 11:24:43,653 INFO L276 IsEmpty]: Start isEmpty. Operand 11900 states and 16203 transitions. [2022-11-20 11:24:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-20 11:24:43,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:43,657 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 5, 4, 4, 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] [2022-11-20 11:24:43,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:43,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:43,879 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 11:24:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash 529438560, now seen corresponding path program 1 times [2022-11-20 11:24:43,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:43,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203475348] [2022-11-20 11:24:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:43,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:43,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:43,884 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:43,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:45,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:24:45,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2022-11-20 11:24:47,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:24:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2022-11-20 11:24:48,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:48,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203475348] [2022-11-20 11:24:48,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203475348] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:48,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:48,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 11:24:48,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990548027] [2022-11-20 11:24:48,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:48,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:24:48,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:24:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:24:48,535 INFO L87 Difference]: Start difference. First operand 11900 states and 16203 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 11:24:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:49,629 INFO L93 Difference]: Finished difference Result 11906 states and 16208 transitions. [2022-11-20 11:24:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:24:49,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 322 [2022-11-20 11:24:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:49,677 INFO L225 Difference]: With dead ends: 11906 [2022-11-20 11:24:49,678 INFO L226 Difference]: Without dead ends: 11904 [2022-11-20 11:24:49,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:24:49,684 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2102 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:49,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 6524 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:24:49,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11904 states. [2022-11-20 11:24:51,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11904 to 11904. [2022-11-20 11:24:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11904 states, 8331 states have (on average 1.2949225783219303) internal successors, (10788), 8375 states have internal predecessors, (10788), 2711 states have call successors, (2711), 860 states have call predecessors, (2711), 859 states have return successors, (2707), 2690 states have call predecessors, (2707), 2707 states have call successors, (2707) [2022-11-20 11:24:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11904 states to 11904 states and 16206 transitions. [2022-11-20 11:24:51,047 INFO L78 Accepts]: Start accepts. Automaton has 11904 states and 16206 transitions. Word has length 322 [2022-11-20 11:24:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:51,048 INFO L495 AbstractCegarLoop]: Abstraction has 11904 states and 16206 transitions. [2022-11-20 11:24:51,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 11:24:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 11904 states and 16206 transitions. [2022-11-20 11:24:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-20 11:24:51,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:51,053 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 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] [2022-11-20 11:24:51,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:51,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:51,275 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 11:24:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1746569428, now seen corresponding path program 1 times [2022-11-20 11:24:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:51,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220236802] [2022-11-20 11:24:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:51,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:51,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:51,278 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:51,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:52,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:24:52,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1853 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2022-11-20 11:24:54,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:24:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1853 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2022-11-20 11:24:55,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:24:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220236802] [2022-11-20 11:24:55,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220236802] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:55,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:55,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 11:24:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786437638] [2022-11-20 11:24:55,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:55,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:24:55,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:24:55,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:24:55,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:24:55,851 INFO L87 Difference]: Start difference. First operand 11904 states and 16206 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 11:24:56,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:56,857 INFO L93 Difference]: Finished difference Result 11910 states and 16211 transitions. [2022-11-20 11:24:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:24:56,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 327 [2022-11-20 11:24:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:56,899 INFO L225 Difference]: With dead ends: 11910 [2022-11-20 11:24:56,900 INFO L226 Difference]: Without dead ends: 11908 [2022-11-20 11:24:56,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:24:56,907 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2102 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:56,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 6524 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:24:56,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11908 states. [2022-11-20 11:24:57,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11908 to 11908. [2022-11-20 11:24:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11908 states, 8334 states have (on average 1.294816414686825) internal successors, (10791), 8378 states have internal predecessors, (10791), 2711 states have call successors, (2711), 861 states have call predecessors, (2711), 860 states have return successors, (2707), 2690 states have call predecessors, (2707), 2707 states have call successors, (2707) [2022-11-20 11:24:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11908 states to 11908 states and 16209 transitions. [2022-11-20 11:24:58,016 INFO L78 Accepts]: Start accepts. Automaton has 11908 states and 16209 transitions. Word has length 327 [2022-11-20 11:24:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:58,017 INFO L495 AbstractCegarLoop]: Abstraction has 11908 states and 16209 transitions. [2022-11-20 11:24:58,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 11:24:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 11908 states and 16209 transitions. [2022-11-20 11:24:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-20 11:24:58,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:58,023 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 7, 6, 6, 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] [2022-11-20 11:24:58,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:58,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:58,229 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 11:24:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash -999524448, now seen corresponding path program 1 times [2022-11-20 11:24:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:24:58,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961173688] [2022-11-20 11:24:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:58,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:24:58,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:24:58,233 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:24:58,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:24:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:59,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 2324 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:24:59,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1863 trivial. 0 not checked. [2022-11-20 11:25:02,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1863 trivial. 0 not checked. [2022-11-20 11:25:03,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:25:03,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961173688] [2022-11-20 11:25:03,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961173688] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:03,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:03,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 11:25:03,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172696942] [2022-11-20 11:25:03,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:03,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:03,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:25:03,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:03,113 INFO L87 Difference]: Start difference. First operand 11908 states and 16209 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:25:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:04,457 INFO L93 Difference]: Finished difference Result 12012 states and 16305 transitions. [2022-11-20 11:25:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 332 [2022-11-20 11:25:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:04,495 INFO L225 Difference]: With dead ends: 12012 [2022-11-20 11:25:04,495 INFO L226 Difference]: Without dead ends: 12010 [2022-11-20 11:25:04,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:25:04,501 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2081 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 6559 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:04,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2083 Valid, 6559 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:25:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12010 states. [2022-11-20 11:25:05,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12010 to 12008. [2022-11-20 11:25:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12008 states, 8409 states have (on average 1.2943275062433108) internal successors, (10884), 8453 states have internal predecessors, (10884), 2711 states have call successors, (2711), 886 states have call predecessors, (2711), 885 states have return successors, (2707), 2690 states have call predecessors, (2707), 2707 states have call successors, (2707) [2022-11-20 11:25:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12008 states to 12008 states and 16302 transitions. [2022-11-20 11:25:05,697 INFO L78 Accepts]: Start accepts. Automaton has 12008 states and 16302 transitions. Word has length 332 [2022-11-20 11:25:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:05,697 INFO L495 AbstractCegarLoop]: Abstraction has 12008 states and 16302 transitions. [2022-11-20 11:25:05,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:25:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 12008 states and 16302 transitions. [2022-11-20 11:25:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-20 11:25:05,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:05,701 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 8, 7, 7, 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] [2022-11-20 11:25:05,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-20 11:25:05,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:05,911 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 11:25:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash -262602732, now seen corresponding path program 1 times [2022-11-20 11:25:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:25:05,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603998057] [2022-11-20 11:25:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:05,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:05,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:25:05,914 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:25:05,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2331 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:25:07,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1901 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2022-11-20 11:25:09,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1901 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2022-11-20 11:25:10,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:25:10,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603998057] [2022-11-20 11:25:10,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603998057] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:10,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:10,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 11:25:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853289757] [2022-11-20 11:25:10,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:10,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:25:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:10,694 INFO L87 Difference]: Start difference. First operand 12008 states and 16302 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 11:25:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:11,903 INFO L93 Difference]: Finished difference Result 12068 states and 16347 transitions. [2022-11-20 11:25:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:11,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 337 [2022-11-20 11:25:11,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:11,934 INFO L225 Difference]: With dead ends: 12068 [2022-11-20 11:25:11,934 INFO L226 Difference]: Without dead ends: 12064 [2022-11-20 11:25:11,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:25:11,941 INFO L413 NwaCegarLoop]: 2187 mSDtfsCounter, 2089 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 6566 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:11,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 6566 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:25:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12064 states. [2022-11-20 11:25:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12064 to 12062. [2022-11-20 11:25:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12062 states, 8450 states have (on average 1.2927810650887575) internal successors, (10924), 8493 states have internal predecessors, (10924), 2711 states have call successors, (2711), 900 states have call predecessors, (2711), 898 states have return successors, (2707), 2690 states have call predecessors, (2707), 2707 states have call successors, (2707) [2022-11-20 11:25:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12062 states to 12062 states and 16342 transitions. [2022-11-20 11:25:13,160 INFO L78 Accepts]: Start accepts. Automaton has 12062 states and 16342 transitions. Word has length 337 [2022-11-20 11:25:13,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:13,161 INFO L495 AbstractCegarLoop]: Abstraction has 12062 states and 16342 transitions. [2022-11-20 11:25:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 11:25:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 12062 states and 16342 transitions. [2022-11-20 11:25:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-20 11:25:13,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:13,166 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 9, 8, 8, 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] [2022-11-20 11:25:13,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:13,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:13,391 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:25:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash 823179232, now seen corresponding path program 1 times [2022-11-20 11:25:13,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:25:13,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884416999] [2022-11-20 11:25:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:13,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:13,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:25:13,395 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:25:13,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:25:14,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1915 trivial. 0 not checked. [2022-11-20 11:25:17,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1915 trivial. 0 not checked. [2022-11-20 11:25:18,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:25:18,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884416999] [2022-11-20 11:25:18,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884416999] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:18,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:18,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 11:25:18,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471596958] [2022-11-20 11:25:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:18,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:18,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:25:18,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:18,114 INFO L87 Difference]: Start difference. First operand 12062 states and 16342 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 11:25:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:19,375 INFO L93 Difference]: Finished difference Result 12062 states and 16342 transitions. [2022-11-20 11:25:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:19,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 342 [2022-11-20 11:25:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:19,406 INFO L225 Difference]: With dead ends: 12062 [2022-11-20 11:25:19,406 INFO L226 Difference]: Without dead ends: 11874 [2022-11-20 11:25:19,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:25:19,412 INFO L413 NwaCegarLoop]: 2178 mSDtfsCounter, 2098 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 6521 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:19,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 6521 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11874 states. [2022-11-20 11:25:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11874 to 11874. [2022-11-20 11:25:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11874 states, 8323 states have (on average 1.2948456085546076) internal successors, (10777), 8350 states have internal predecessors, (10777), 2671 states have call successors, (2671), 878 states have call predecessors, (2671), 878 states have return successors, (2671), 2663 states have call predecessors, (2671), 2671 states have call successors, (2671) [2022-11-20 11:25:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11874 states to 11874 states and 16119 transitions. [2022-11-20 11:25:20,768 INFO L78 Accepts]: Start accepts. Automaton has 11874 states and 16119 transitions. Word has length 342 [2022-11-20 11:25:20,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:20,769 INFO L495 AbstractCegarLoop]: Abstraction has 11874 states and 16119 transitions. [2022-11-20 11:25:20,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 11:25:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 11874 states and 16119 transitions. [2022-11-20 11:25:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-20 11:25:20,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:20,778 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 5, 5, 5, 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] [2022-11-20 11:25:20,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:20,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:20,991 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 11:25:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1420876547, now seen corresponding path program 1 times [2022-11-20 11:25:20,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:25:20,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102201821] [2022-11-20 11:25:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:20,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:20,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:25:20,996 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:25:21,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:22,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:25:22,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 1590 trivial. 0 not checked. [2022-11-20 11:25:23,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:23,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:25:23,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102201821] [2022-11-20 11:25:23,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102201821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:23,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:23,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:25:23,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513346306] [2022-11-20 11:25:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:23,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:23,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:25:23,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:23,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:23,053 INFO L87 Difference]: Start difference. First operand 11874 states and 16119 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-20 11:25:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:25,640 INFO L93 Difference]: Finished difference Result 32711 states and 44553 transitions. [2022-11-20 11:25:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:25,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 368 [2022-11-20 11:25:25,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:25,714 INFO L225 Difference]: With dead ends: 32711 [2022-11-20 11:25:25,715 INFO L226 Difference]: Without dead ends: 20842 [2022-11-20 11:25:25,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:25,757 INFO L413 NwaCegarLoop]: 2494 mSDtfsCounter, 1947 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 4579 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:25,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 4579 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:25:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20842 states. [2022-11-20 11:25:27,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20842 to 20830. [2022-11-20 11:25:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20830 states, 14741 states have (on average 1.2968591004680823) internal successors, (19117), 14802 states have internal predecessors, (19117), 4591 states have call successors, (4591), 1496 states have call predecessors, (4591), 1496 states have return successors, (4591), 4567 states have call predecessors, (4591), 4591 states have call successors, (4591) [2022-11-20 11:25:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20830 states to 20830 states and 28299 transitions. [2022-11-20 11:25:28,011 INFO L78 Accepts]: Start accepts. Automaton has 20830 states and 28299 transitions. Word has length 368 [2022-11-20 11:25:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:28,012 INFO L495 AbstractCegarLoop]: Abstraction has 20830 states and 28299 transitions. [2022-11-20 11:25:28,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-20 11:25:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 20830 states and 28299 transitions. [2022-11-20 11:25:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-20 11:25:28,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:28,020 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:28,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:28,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:28,227 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 11:25:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1286425966, now seen corresponding path program 1 times [2022-11-20 11:25:28,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:25:28,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247025203] [2022-11-20 11:25:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:28,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:28,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:25:28,231 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:25:28,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:25:29,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2058 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 1672 trivial. 0 not checked. [2022-11-20 11:25:30,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:30,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:25:30,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247025203] [2022-11-20 11:25:30,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247025203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:30,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:30,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:25:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501940690] [2022-11-20 11:25:30,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:30,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:25:30,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:25:30,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:25:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:25:30,841 INFO L87 Difference]: Start difference. First operand 20830 states and 28299 transitions. Second operand has 13 states, 12 states have (on average 12.0) internal successors, (144), 12 states have internal predecessors, (144), 6 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-11-20 11:25:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:47,844 INFO L93 Difference]: Finished difference Result 54613 states and 74247 transitions. [2022-11-20 11:25:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:25:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.0) internal successors, (144), 12 states have internal predecessors, (144), 6 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 377 [2022-11-20 11:25:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:47,981 INFO L225 Difference]: With dead ends: 54613 [2022-11-20 11:25:47,982 INFO L226 Difference]: Without dead ends: 33728 [2022-11-20 11:25:48,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:25:48,051 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 4708 mSDsluCounter, 31530 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 35260 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:48,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 35260 Invalid, 2934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [889 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-20 11:25:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33728 states. [2022-11-20 11:25:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33728 to 20984. [2022-11-20 11:25:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20984 states, 14846 states have (on average 1.2950963222416814) internal successors, (19227), 14907 states have internal predecessors, (19227), 4619 states have call successors, (4619), 1517 states have call predecessors, (4619), 1517 states have return successors, (4619), 4595 states have call predecessors, (4619), 4619 states have call successors, (4619) [2022-11-20 11:25:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20984 states to 20984 states and 28465 transitions. [2022-11-20 11:25:51,736 INFO L78 Accepts]: Start accepts. Automaton has 20984 states and 28465 transitions. Word has length 377 [2022-11-20 11:25:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:51,737 INFO L495 AbstractCegarLoop]: Abstraction has 20984 states and 28465 transitions. [2022-11-20 11:25:51,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.0) internal successors, (144), 12 states have internal predecessors, (144), 6 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-11-20 11:25:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 20984 states and 28465 transitions. [2022-11-20 11:25:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-20 11:25:51,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:51,744 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 19, 19, 19, 19, 19, 19, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:51,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:51,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:51,959 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 11:25:51,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash 209005608, now seen corresponding path program 1 times [2022-11-20 11:25:51,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:25:51,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342513973] [2022-11-20 11:25:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:51,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:51,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:25:51,965 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:25:51,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:25:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:25:53,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2022-11-20 11:25:54,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:54,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:25:54,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342513973] [2022-11-20 11:25:54,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342513973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:54,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:54,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:25:54,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136582364] [2022-11-20 11:25:54,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:54,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:25:54,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:25:54,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:25:54,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:25:54,584 INFO L87 Difference]: Start difference. First operand 20984 states and 28465 transitions. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 11:25:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:59,189 INFO L93 Difference]: Finished difference Result 44346 states and 60531 transitions. [2022-11-20 11:25:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:25:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 407 [2022-11-20 11:25:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:59,273 INFO L225 Difference]: With dead ends: 44346 [2022-11-20 11:25:59,273 INFO L226 Difference]: Without dead ends: 23478 [2022-11-20 11:25:59,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:25:59,326 INFO L413 NwaCegarLoop]: 2985 mSDtfsCounter, 590 mSDsluCounter, 23143 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 26128 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:59,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 26128 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:25:59,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23478 states. [2022-11-20 11:26:03,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23478 to 21062. [2022-11-20 11:26:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21062 states, 14908 states have (on average 1.2938690635900187) internal successors, (19289), 14970 states have internal predecessors, (19289), 4619 states have call successors, (4619), 1517 states have call predecessors, (4619), 1533 states have return successors, (4642), 4610 states have call predecessors, (4642), 4619 states have call successors, (4642) [2022-11-20 11:26:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21062 states to 21062 states and 28550 transitions. [2022-11-20 11:26:03,219 INFO L78 Accepts]: Start accepts. Automaton has 21062 states and 28550 transitions. Word has length 407 [2022-11-20 11:26:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:26:03,220 INFO L495 AbstractCegarLoop]: Abstraction has 21062 states and 28550 transitions. [2022-11-20 11:26:03,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 11:26:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 21062 states and 28550 transitions. [2022-11-20 11:26:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-11-20 11:26:03,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:26:03,225 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 19, 19, 19, 19, 19, 19, 7, 7, 7, 4, 4, 4, 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, 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] [2022-11-20 11:26:03,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:26:03,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:26:03,426 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 11:26:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:03,426 INFO L85 PathProgramCache]: Analyzing trace with hash -166852790, now seen corresponding path program 1 times [2022-11-20 11:26:03,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:26:03,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286975645] [2022-11-20 11:26:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:03,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:26:03,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:26:03,430 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:26:03,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4912ae8d-a786-4499-b83c-d56800c8e6cd/bin/uautomizer-ug76WZFUDN/mathsat -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 11:26:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:05,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:26:05,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:26:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 1832 trivial. 0 not checked. [2022-11-20 11:26:05,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:26:05,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:26:05,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286975645] [2022-11-20 11:26:05,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286975645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:05,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:05,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:26:05,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878281070] [2022-11-20 11:26:05,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:05,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:26:05,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:26:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:26:05,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:26:05,707 INFO L87 Difference]: Start difference. First operand 21062 states and 28550 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41)