./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-net-ethernet-dlink-sundance.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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:30:02,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:02,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:02,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:02,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:02,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:02,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:02,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:02,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:02,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:02,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:02,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:02,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:02,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:02,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:02,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:02,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:02,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:02,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:02,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:02,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:02,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:02,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:02,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:02,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:02,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:02,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:02,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:02,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:02,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:02,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:02,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:02,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:02,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:02,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:02,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:02,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:02,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:02,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:02,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:02,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:02,663 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:30:02,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:02,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:02,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:02,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:02,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:02,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:02,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:02,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:02,708 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:02,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:02,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:02,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:02,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:02,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:02,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:02,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:02,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:02,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:02,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:02,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:02,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:02,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:02,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:02,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:02,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:02,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:02,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:02,714 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:02,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:02,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:02,715 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2022-11-20 10:30:03,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:03,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:03,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:03,094 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:03,095 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:03,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-20 10:30:06,259 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:07,011 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:07,011 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-20 10:30:07,089 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/data/53867013a/cd10bd75a5b04ce8bb6912e3f0b4b4cb/FLAG8032bebf7 [2022-11-20 10:30:07,108 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/data/53867013a/cd10bd75a5b04ce8bb6912e3f0b4b4cb [2022-11-20 10:30:07,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:07,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:07,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:07,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:07,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:07,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f060e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07, skipping insertion in model container [2022-11-20 10:30:07,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:07,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:07,944 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 10:30:07,956 INFO L158 Benchmark]: Toolchain (without parser) took 840.77ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 111.2MB in the beginning and 146.1MB in the end (delta: -34.8MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2022-11-20 10:30:07,957 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 159.4MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:30:07,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 836.23ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 111.2MB in the beginning and 146.1MB in the end (delta: -34.8MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2022-11-20 10:30:07,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 159.4MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 836.23ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 111.2MB in the beginning and 146.1MB in the end (delta: -34.8MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:30:10,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:10,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:10,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:10,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:10,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:10,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:10,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:10,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:10,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:10,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:10,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:10,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:10,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:10,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:10,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:10,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:10,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:10,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:10,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:10,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:10,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:10,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:10,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:10,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:10,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:10,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:10,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:10,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:10,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:10,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:10,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:10,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:10,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:10,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:10,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:10,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:10,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:10,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:10,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:10,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:10,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:30:10,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:10,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:10,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:10,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:10,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:10,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:10,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:10,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:10,347 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:10,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:10,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:10,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:10,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:10,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:10,350 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:30:10,350 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:30:10,351 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:30:10,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:10,351 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:10,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:10,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:10,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:10,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:10,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:10,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:10,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:10,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:10,355 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:30:10,358 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:30:10,359 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:10,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:10,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:10,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:30:10,360 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2022-11-20 10:30:10,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:10,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:10,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:10,769 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:10,769 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:10,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-20 10:30:14,090 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:14,788 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:14,790 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-20 10:30:14,851 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/data/8fcc1c52b/5af36f4429ed4c5cb53b68071234ce2a/FLAG74d4833cf [2022-11-20 10:30:14,874 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/data/8fcc1c52b/5af36f4429ed4c5cb53b68071234ce2a [2022-11-20 10:30:14,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:14,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:14,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:14,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:14,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:14,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:14" (1/1) ... [2022-11-20 10:30:14,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727c40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:14, skipping insertion in model container [2022-11-20 10:30:14,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:14" (1/1) ... [2022-11-20 10:30:14,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:15,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:18,494 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2022-11-20 10:30:18,499 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2022-11-20 10:30:18,500 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2022-11-20 10:30:18,500 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2022-11-20 10:30:18,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:18,572 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:30:18,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:19,027 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2022-11-20 10:30:19,028 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2022-11-20 10:30:19,028 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2022-11-20 10:30:19,029 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2022-11-20 10:30:19,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:19,096 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:19,447 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2022-11-20 10:30:19,448 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2022-11-20 10:30:19,449 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2022-11-20 10:30:19,449 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_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2022-11-20 10:30:19,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:19,869 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:19,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19 WrapperNode [2022-11-20 10:30:19,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:19,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:19,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:19,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:19,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,168 INFO L138 Inliner]: procedures = 484, calls = 2162, calls flagged for inlining = 234, calls inlined = 217, statements flattened = 5276 [2022-11-20 10:30:20,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:20,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:20,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:20,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:20,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:20,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:20,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:20,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:20,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:20,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:20,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:20,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:20,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2022-11-20 10:30:20,582 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2022-11-20 10:30:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-20 10:30:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-20 10:30:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 10:30:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 10:30:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 10:30:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 10:30:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-20 10:30:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-20 10:30:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 10:30:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 10:30:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:30:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:30:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 10:30:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 10:30:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 10:30:20,586 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 10:30:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-20 10:30:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-20 10:30:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-20 10:30:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-20 10:30:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure reset_tx [2022-11-20 10:30:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_tx [2022-11-20 10:30:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2022-11-20 10:30:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2022-11-20 10:30:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_76 [2022-11-20 10:30:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_76 [2022-11-20 10:30:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-20 10:30:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-20 10:30:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 10:30:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 10:30:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 10:30:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 10:30:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 10:30:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 10:30:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 10:30:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 10:30:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-20 10:30:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-20 10:30:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 10:30:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 10:30:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 10:30:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 10:30:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 10:30:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 10:30:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:30:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_69 [2022-11-20 10:30:20,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_69 [2022-11-20 10:30:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-20 10:30:20,592 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-20 10:30:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-20 10:30:20,593 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-20 10:30:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:30:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:30:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 10:30:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 10:30:20,593 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 10:30:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 10:30:20,593 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 10:30:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-20 10:30:20,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-20 10:30:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 10:30:20,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 10:30:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 10:30:20,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 10:30:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-20 10:30:20,596 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-20 10:30:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 10:30:20,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 10:30:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 10:30:20,596 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 10:30:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-20 10:30:20,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-20 10:30:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure check_duplex [2022-11-20 10:30:20,598 INFO L138 BoogieDeclarations]: Found implementation of procedure check_duplex [2022-11-20 10:30:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 10:30:20,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 10:30:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-20 10:30:20,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-20 10:30:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 10:30:20,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 10:30:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2022-11-20 10:30:20,599 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2022-11-20 10:30:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_resume [2022-11-20 10:30:20,599 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_resume [2022-11-20 10:30:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:30:20,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 10:30:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:30:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 10:30:20,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 10:30:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 10:30:20,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 10:30:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-20 10:30:20,600 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-20 10:30:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 10:30:20,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 10:30:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 10:30:20,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 10:30:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:30:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 10:30:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 10:30:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-20 10:30:20,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-20 10:30:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:30:20,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:30:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 10:30:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-20 10:30:20,608 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-20 10:30:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-20 10:30:20,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-20 10:30:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 10:30:20,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 10:30:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 10:30:20,615 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 10:30:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 10:30:20,615 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 10:30:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 10:30:20,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 10:30:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure __set_mac_addr [2022-11-20 10:30:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_mac_addr [2022-11-20 10:30:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 10:30:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-20 10:30:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-20 10:30:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2022-11-20 10:30:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2022-11-20 10:30:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:30:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:30:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:30:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:30:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 10:30:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:30:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:30:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:30:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2022-11-20 10:30:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2022-11-20 10:30:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 10:30:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 10:30:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2022-11-20 10:30:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2022-11-20 10:30:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_poll_controller [2022-11-20 10:30:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_poll_controller [2022-11-20 10:30:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-20 10:30:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-20 10:30:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2022-11-20 10:30:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2022-11-20 10:30:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-20 10:30:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-20 10:30:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 10:30:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 10:30:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 10:30:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 10:30:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-20 10:30:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-20 10:30:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-20 10:30:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-20 10:30:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 10:30:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 10:30:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:30:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 10:30:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 10:30:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_75 [2022-11-20 10:30:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_75 [2022-11-20 10:30:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:30:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-20 10:30:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-20 10:30:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-20 10:30:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-20 10:30:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:30:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:30:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 10:30:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:30:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:30:20,623 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2022-11-20 10:30:20,623 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2022-11-20 10:30:20,623 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-20 10:30:20,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-20 10:30:20,623 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-11-20 10:30:20,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-11-20 10:30:20,624 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 10:30:20,624 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 10:30:20,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-20 10:30:20,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-20 10:30:20,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 10:30:20,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 10:30:20,624 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-20 10:30:20,624 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-20 10:30:20,625 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-20 10:30:20,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-20 10:30:20,625 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2022-11-20 10:30:20,625 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2022-11-20 10:30:20,625 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_reset [2022-11-20 10:30:20,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_reset [2022-11-20 10:30:20,625 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-20 10:30:20,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-20 10:30:20,625 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 10:30:20,625 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 10:30:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 10:30:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 10:30:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 10:30:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 10:30:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 10:30:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 10:30:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_remove1 [2022-11-20 10:30:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_remove1 [2022-11-20 10:30:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_70 [2022-11-20 10:30:20,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_70 [2022-11-20 10:30:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 10:30:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 10:30:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 10:30:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 10:30:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:30:20,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:30:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 10:30:20,627 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 10:30:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2022-11-20 10:30:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2022-11-20 10:30:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 10:30:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 10:30:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 10:30:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 10:30:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-20 10:30:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-20 10:30:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-20 10:30:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-20 10:30:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 10:30:20,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 10:30:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-20 10:30:20,633 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-20 10:30:21,683 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:21,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:28,489 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:32:14,881 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 10:32:15,076 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:32:15,100 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:32:15,101 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:32:15,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:15 BoogieIcfgContainer [2022-11-20 10:32:15,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:32:15,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:32:15,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:32:15,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:32:15,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:14" (1/3) ... [2022-11-20 10:32:15,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667bd275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:15, skipping insertion in model container [2022-11-20 10:32:15,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (2/3) ... [2022-11-20 10:32:15,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667bd275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:15, skipping insertion in model container [2022-11-20 10:32:15,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:15" (3/3) ... [2022-11-20 10:32:15,117 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-20 10:32:15,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:32:15,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 10:32:15,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:32:15,258 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;@4d68125f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:32:15,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 10:32:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 1899 states, 1289 states have (on average 1.2645461598138092) internal successors, (1630), 1328 states have internal predecessors, (1630), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 497 states have call predecessors, (505), 505 states have call successors, (505) [2022-11-20 10:32:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 10:32:15,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:15,302 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:15,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:32:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:15,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1732029188, now seen corresponding path program 1 times [2022-11-20 10:32:15,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:15,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451395351] [2022-11-20 10:32:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:15,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:15,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:15,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:15,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 10:32:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:18,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2383 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:18,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2022-11-20 10:32:18,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:18,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:18,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451395351] [2022-11-20 10:32:18,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451395351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:18,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:18,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509536910] [2022-11-20 10:32:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:18,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:18,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:18,596 INFO L87 Difference]: Start difference. First operand has 1899 states, 1289 states have (on average 1.2645461598138092) internal successors, (1630), 1328 states have internal predecessors, (1630), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 497 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:32:20,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:32:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:22,576 INFO L93 Difference]: Finished difference Result 5516 states and 7823 transitions. [2022-11-20 10:32:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 171 [2022-11-20 10:32:22,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:22,618 INFO L225 Difference]: With dead ends: 5516 [2022-11-20 10:32:22,618 INFO L226 Difference]: Without dead ends: 3638 [2022-11-20 10:32:22,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:22,639 INFO L413 NwaCegarLoop]: 3077 mSDtfsCounter, 2464 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2464 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:22,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2464 Valid, 5633 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 10:32:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-11-20 10:32:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3634. [2022-11-20 10:32:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 2479 states have (on average 1.2577652279144818) internal successors, (3118), 2548 states have internal predecessors, (3118), 956 states have call successors, (956), 197 states have call predecessors, (956), 196 states have return successors, (952), 936 states have call predecessors, (952), 952 states have call successors, (952) [2022-11-20 10:32:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5026 transitions. [2022-11-20 10:32:22,978 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5026 transitions. Word has length 171 [2022-11-20 10:32:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:22,981 INFO L495 AbstractCegarLoop]: Abstraction has 3634 states and 5026 transitions. [2022-11-20 10:32:22,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:32:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5026 transitions. [2022-11-20 10:32:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-20 10:32:22,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:22,997 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:23,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:23,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:23,211 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 10:32:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1924980216, now seen corresponding path program 1 times [2022-11-20 10:32:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:23,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439620930] [2022-11-20 10:32:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:23,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:23,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:23,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:23,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 10:32:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:26,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:26,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2022-11-20 10:32:26,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:26,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:26,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439620930] [2022-11-20 10:32:26,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439620930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:26,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:26,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761743965] [2022-11-20 10:32:26,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:26,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:26,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:26,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:26,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:26,778 INFO L87 Difference]: Start difference. First operand 3634 states and 5026 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:32:29,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:32:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:32,568 INFO L93 Difference]: Finished difference Result 10234 states and 14146 transitions. [2022-11-20 10:32:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:32,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 180 [2022-11-20 10:32:32,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:32,615 INFO L225 Difference]: With dead ends: 10234 [2022-11-20 10:32:32,615 INFO L226 Difference]: Without dead ends: 6631 [2022-11-20 10:32:32,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:32,634 INFO L413 NwaCegarLoop]: 3034 mSDtfsCounter, 2130 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 5522 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:32,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 5522 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 10:32:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2022-11-20 10:32:32,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6601. [2022-11-20 10:32:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6601 states, 4450 states have (on average 1.2537078651685394) internal successors, (5579), 4586 states have internal predecessors, (5579), 1767 states have call successors, (1767), 384 states have call predecessors, (1767), 381 states have return successors, (1769), 1722 states have call predecessors, (1769), 1763 states have call successors, (1769) [2022-11-20 10:32:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6601 states to 6601 states and 9115 transitions. [2022-11-20 10:32:33,040 INFO L78 Accepts]: Start accepts. Automaton has 6601 states and 9115 transitions. Word has length 180 [2022-11-20 10:32:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:33,044 INFO L495 AbstractCegarLoop]: Abstraction has 6601 states and 9115 transitions. [2022-11-20 10:32:33,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:32:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6601 states and 9115 transitions. [2022-11-20 10:32:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-20 10:32:33,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:33,050 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:33,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:33,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:33,269 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 10:32:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 504790623, now seen corresponding path program 1 times [2022-11-20 10:32:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:33,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890067492] [2022-11-20 10:32:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:33,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:33,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 10:32:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:36,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:36,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2022-11-20 10:32:36,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:36,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:36,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890067492] [2022-11-20 10:32:36,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890067492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:36,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:36,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:36,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088357985] [2022-11-20 10:32:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:36,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:36,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:36,841 INFO L87 Difference]: Start difference. First operand 6601 states and 9115 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 10:32:39,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:32:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:40,998 INFO L93 Difference]: Finished difference Result 19429 states and 26869 transitions. [2022-11-20 10:32:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:40,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 198 [2022-11-20 10:32:41,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:41,107 INFO L225 Difference]: With dead ends: 19429 [2022-11-20 10:32:41,107 INFO L226 Difference]: Without dead ends: 12859 [2022-11-20 10:32:41,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:41,158 INFO L413 NwaCegarLoop]: 3161 mSDtfsCounter, 2514 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:41,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 5648 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 10:32:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12859 states. [2022-11-20 10:32:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12859 to 12825. [2022-11-20 10:32:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12825 states, 8650 states have (on average 1.2558381502890172) internal successors, (10863), 8932 states have internal predecessors, (10863), 3421 states have call successors, (3421), 762 states have call predecessors, (3421), 751 states have return successors, (3455), 3310 states have call predecessors, (3455), 3417 states have call successors, (3455) [2022-11-20 10:32:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12825 states to 12825 states and 17739 transitions. [2022-11-20 10:32:42,224 INFO L78 Accepts]: Start accepts. Automaton has 12825 states and 17739 transitions. Word has length 198 [2022-11-20 10:32:42,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:42,226 INFO L495 AbstractCegarLoop]: Abstraction has 12825 states and 17739 transitions. [2022-11-20 10:32:42,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 10:32:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 12825 states and 17739 transitions. [2022-11-20 10:32:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 10:32:42,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:42,234 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 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] [2022-11-20 10:32:42,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:42,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:42,447 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 10:32:42,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2008419122, now seen corresponding path program 1 times [2022-11-20 10:32:42,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:42,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073249008] [2022-11-20 10:32:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:42,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:42,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:42,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:42,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 10:32:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:45,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:45,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2022-11-20 10:32:46,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:46,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:46,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073249008] [2022-11-20 10:32:46,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073249008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:46,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:46,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:46,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576920803] [2022-11-20 10:32:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:46,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:46,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:46,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:46,153 INFO L87 Difference]: Start difference. First operand 12825 states and 17739 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 10:32:48,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:32:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:51,725 INFO L93 Difference]: Finished difference Result 23328 states and 32128 transitions. [2022-11-20 10:32:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:51,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 210 [2022-11-20 10:32:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:51,798 INFO L225 Difference]: With dead ends: 23328 [2022-11-20 10:32:51,799 INFO L226 Difference]: Without dead ends: 10534 [2022-11-20 10:32:51,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:51,854 INFO L413 NwaCegarLoop]: 3724 mSDtfsCounter, 1627 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:51,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 6251 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 10:32:51,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10534 states. [2022-11-20 10:32:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10534 to 10502. [2022-11-20 10:32:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 7172 states have (on average 1.2486056887897379) internal successors, (8955), 7394 states have internal predecessors, (8955), 2671 states have call successors, (2671), 666 states have call predecessors, (2671), 656 states have return successors, (2686), 2574 states have call predecessors, (2686), 2667 states have call successors, (2686) [2022-11-20 10:32:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 14312 transitions. [2022-11-20 10:32:52,568 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 14312 transitions. Word has length 210 [2022-11-20 10:32:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:52,569 INFO L495 AbstractCegarLoop]: Abstraction has 10502 states and 14312 transitions. [2022-11-20 10:32:52,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 10:32:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 14312 transitions. [2022-11-20 10:32:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-20 10:32:52,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:52,575 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:52,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:52,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:52,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:32:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1677764007, now seen corresponding path program 1 times [2022-11-20 10:32:52,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:32:52,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909541486] [2022-11-20 10:32:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:52,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:32:52,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:32:52,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:32:52,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 10:32:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:55,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:55,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-11-20 10:32:56,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:56,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:32:56,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909541486] [2022-11-20 10:32:56,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909541486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:56,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:56,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:56,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588289811] [2022-11-20 10:32:56,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:56,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:56,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:32:56,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:56,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:56,528 INFO L87 Difference]: Start difference. First operand 10502 states and 14312 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 10:32:58,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:33:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:01,269 INFO L93 Difference]: Finished difference Result 30170 states and 41203 transitions. [2022-11-20 10:33:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:01,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 227 [2022-11-20 10:33:01,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:01,366 INFO L225 Difference]: With dead ends: 30170 [2022-11-20 10:33:01,366 INFO L226 Difference]: Without dead ends: 20083 [2022-11-20 10:33:01,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:01,408 INFO L413 NwaCegarLoop]: 3661 mSDtfsCounter, 2428 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 6226 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:01,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2428 Valid, 6226 Invalid, 30 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 10:33:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2022-11-20 10:33:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 20079. [2022-11-20 10:33:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20079 states, 13733 states have (on average 1.2497633437704798) internal successors, (17163), 14143 states have internal predecessors, (17163), 5091 states have call successors, (5091), 1267 states have call predecessors, (5091), 1252 states have return successors, (5125), 4932 states have call predecessors, (5125), 5087 states have call successors, (5125) [2022-11-20 10:33:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20079 states to 20079 states and 27379 transitions. [2022-11-20 10:33:02,783 INFO L78 Accepts]: Start accepts. Automaton has 20079 states and 27379 transitions. Word has length 227 [2022-11-20 10:33:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:02,784 INFO L495 AbstractCegarLoop]: Abstraction has 20079 states and 27379 transitions. [2022-11-20 10:33:02,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 10:33:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 20079 states and 27379 transitions. [2022-11-20 10:33:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-20 10:33:02,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:02,794 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:02,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:03,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:03,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:33:03,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:03,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1818312617, now seen corresponding path program 1 times [2022-11-20 10:33:03,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:33:03,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338058627] [2022-11-20 10:33:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:03,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:03,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:33:03,022 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:33:03,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 10:33:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:05,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:33:05,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-20 10:33:20,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:20,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:33:20,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338058627] [2022-11-20 10:33:20,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338058627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:20,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:20,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:20,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902756493] [2022-11-20 10:33:20,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:20,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:20,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:33:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:20,908 INFO L87 Difference]: Start difference. First operand 20079 states and 27379 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-20 10:33:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:23,563 INFO L93 Difference]: Finished difference Result 20085 states and 27384 transitions. [2022-11-20 10:33:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:23,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 227 [2022-11-20 10:33:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:23,652 INFO L225 Difference]: With dead ends: 20085 [2022-11-20 10:33:23,652 INFO L226 Difference]: Without dead ends: 20083 [2022-11-20 10:33:23,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:33:23,661 INFO L413 NwaCegarLoop]: 2589 mSDtfsCounter, 2499 mSDsluCounter, 5165 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 7754 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:23,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 7754 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 10:33:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2022-11-20 10:33:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 20083. [2022-11-20 10:33:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20083 states, 13736 states have (on average 1.2497087944088527) internal successors, (17166), 14146 states have internal predecessors, (17166), 5091 states have call successors, (5091), 1268 states have call predecessors, (5091), 1253 states have return successors, (5125), 4932 states have call predecessors, (5125), 5087 states have call successors, (5125) [2022-11-20 10:33:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20083 states to 20083 states and 27382 transitions. [2022-11-20 10:33:25,057 INFO L78 Accepts]: Start accepts. Automaton has 20083 states and 27382 transitions. Word has length 227 [2022-11-20 10:33:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:25,058 INFO L495 AbstractCegarLoop]: Abstraction has 20083 states and 27382 transitions. [2022-11-20 10:33:25,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-20 10:33:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 20083 states and 27382 transitions. [2022-11-20 10:33:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-20 10:33:25,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:25,065 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:25,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:25,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:25,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:33:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:25,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1767320573, now seen corresponding path program 1 times [2022-11-20 10:33:25,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:33:25,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090394637] [2022-11-20 10:33:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:25,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:25,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:33:25,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:33:25,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 10:33:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:28,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:33:28,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-20 10:33:43,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-20 10:33:49,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:33:49,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090394637] [2022-11-20 10:33:49,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090394637] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:49,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:49,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:33:49,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146008573] [2022-11-20 10:33:49,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:49,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:49,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:33:49,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:49,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:33:49,339 INFO L87 Difference]: Start difference. First operand 20083 states and 27382 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 10:33:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:52,597 INFO L93 Difference]: Finished difference Result 20089 states and 27387 transitions. [2022-11-20 10:33:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:33:52,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 232 [2022-11-20 10:33:52,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:52,682 INFO L225 Difference]: With dead ends: 20089 [2022-11-20 10:33:52,682 INFO L226 Difference]: Without dead ends: 20087 [2022-11-20 10:33:52,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:33:52,691 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2520 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:52,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 7756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:33:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20087 states. [2022-11-20 10:33:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20087 to 20087. [2022-11-20 10:33:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20087 states, 13739 states have (on average 1.2496542688696413) internal successors, (17169), 14149 states have internal predecessors, (17169), 5091 states have call successors, (5091), 1269 states have call predecessors, (5091), 1254 states have return successors, (5125), 4932 states have call predecessors, (5125), 5087 states have call successors, (5125) [2022-11-20 10:33:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20087 states to 20087 states and 27385 transitions. [2022-11-20 10:33:54,482 INFO L78 Accepts]: Start accepts. Automaton has 20087 states and 27385 transitions. Word has length 232 [2022-11-20 10:33:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:54,483 INFO L495 AbstractCegarLoop]: Abstraction has 20087 states and 27385 transitions. [2022-11-20 10:33:54,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 10:33:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 20087 states and 27385 transitions. [2022-11-20 10:33:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 10:33:54,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:54,488 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:54,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:54,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:54,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:33:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash -407961687, now seen corresponding path program 1 times [2022-11-20 10:33:54,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:33:54,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154367840] [2022-11-20 10:33:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:54,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:54,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:33:54,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:33:54,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 10:33:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:57,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:33:57,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-11-20 10:34:13,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-11-20 10:34:18,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:18,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154367840] [2022-11-20 10:34:18,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154367840] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:18,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:34:18,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:34:18,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386958423] [2022-11-20 10:34:18,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:18,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:34:18,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:34:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:18,909 INFO L87 Difference]: Start difference. First operand 20087 states and 27385 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 10:34:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:21,814 INFO L93 Difference]: Finished difference Result 20093 states and 27390 transitions. [2022-11-20 10:34:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:34:21,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2022-11-20 10:34:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:21,890 INFO L225 Difference]: With dead ends: 20093 [2022-11-20 10:34:21,890 INFO L226 Difference]: Without dead ends: 20091 [2022-11-20 10:34:21,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:34:21,902 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2520 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:21,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2530 Valid, 7756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:34:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20091 states. [2022-11-20 10:34:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20091 to 20091. [2022-11-20 10:34:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20091 states, 13742 states have (on average 1.2495997671372434) internal successors, (17172), 14152 states have internal predecessors, (17172), 5091 states have call successors, (5091), 1270 states have call predecessors, (5091), 1255 states have return successors, (5125), 4932 states have call predecessors, (5125), 5087 states have call successors, (5125) [2022-11-20 10:34:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20091 states to 20091 states and 27388 transitions. [2022-11-20 10:34:23,419 INFO L78 Accepts]: Start accepts. Automaton has 20091 states and 27388 transitions. Word has length 237 [2022-11-20 10:34:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:23,420 INFO L495 AbstractCegarLoop]: Abstraction has 20091 states and 27388 transitions. [2022-11-20 10:34:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 10:34:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 20091 states and 27388 transitions. [2022-11-20 10:34:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-20 10:34:23,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:23,426 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:23,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:34:23,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:34:23,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:23,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash 336520902, now seen corresponding path program 1 times [2022-11-20 10:34:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:23,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890553734] [2022-11-20 10:34:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:23,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:34:23,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:23,656 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:34:23,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 10:34:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:26,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:34:26,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2022-11-20 10:34:27,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:34:27,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:34:27,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890553734] [2022-11-20 10:34:27,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890553734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:27,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:27,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:34:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755105755] [2022-11-20 10:34:27,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:27,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:34:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:34:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:34:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:27,637 INFO L87 Difference]: Start difference. First operand 20091 states and 27388 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 10:34:29,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:34:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:33,300 INFO L93 Difference]: Finished difference Result 49387 states and 67410 transitions. [2022-11-20 10:34:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:34:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 254 [2022-11-20 10:34:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:33,426 INFO L225 Difference]: With dead ends: 49387 [2022-11-20 10:34:33,426 INFO L226 Difference]: Without dead ends: 29711 [2022-11-20 10:34:33,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:33,636 INFO L413 NwaCegarLoop]: 4889 mSDtfsCounter, 2460 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 7456 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:33,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 7456 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 10:34:33,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29711 states. [2022-11-20 10:34:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29711 to 29676. [2022-11-20 10:34:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29676 states, 20311 states have (on average 1.2499630741962484) internal successors, (25388), 20909 states have internal predecessors, (25388), 7511 states have call successors, (7511), 1871 states have call predecessors, (7511), 1851 states have return successors, (7564), 7290 states have call predecessors, (7564), 7507 states have call successors, (7564) [2022-11-20 10:34:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29676 states to 29676 states and 40463 transitions. [2022-11-20 10:34:36,029 INFO L78 Accepts]: Start accepts. Automaton has 29676 states and 40463 transitions. Word has length 254 [2022-11-20 10:34:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:36,030 INFO L495 AbstractCegarLoop]: Abstraction has 29676 states and 40463 transitions. [2022-11-20 10:34:36,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 10:34:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 29676 states and 40463 transitions. [2022-11-20 10:34:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-20 10:34:36,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:36,037 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:36,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:34:36,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:34:36,251 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:34:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash -970112125, now seen corresponding path program 1 times [2022-11-20 10:34:36,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:34:36,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135171457] [2022-11-20 10:34:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:36,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:34:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:34:36,254 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:34:36,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 10:34:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:39,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:34:39,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2022-11-20 10:34:56,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2022-11-20 10:35:02,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:02,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135171457] [2022-11-20 10:35:02,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135171457] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:02,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:02,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:02,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016234163] [2022-11-20 10:35:02,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:02,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:02,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:02,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:02,667 INFO L87 Difference]: Start difference. First operand 29676 states and 40463 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 10:35:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:06,686 INFO L93 Difference]: Finished difference Result 29682 states and 40468 transitions. [2022-11-20 10:35:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:06,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 242 [2022-11-20 10:35:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:06,890 INFO L225 Difference]: With dead ends: 29682 [2022-11-20 10:35:06,890 INFO L226 Difference]: Without dead ends: 29680 [2022-11-20 10:35:06,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:35:06,899 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2520 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:06,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2529 Valid, 7756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:35:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29680 states. [2022-11-20 10:35:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29680 to 29680. [2022-11-20 10:35:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29680 states, 20314 states have (on average 1.2499261592990056) internal successors, (25391), 20912 states have internal predecessors, (25391), 7511 states have call successors, (7511), 1872 states have call predecessors, (7511), 1852 states have return successors, (7564), 7290 states have call predecessors, (7564), 7507 states have call successors, (7564) [2022-11-20 10:35:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29680 states to 29680 states and 40466 transitions. [2022-11-20 10:35:09,210 INFO L78 Accepts]: Start accepts. Automaton has 29680 states and 40466 transitions. Word has length 242 [2022-11-20 10:35:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:09,210 INFO L495 AbstractCegarLoop]: Abstraction has 29680 states and 40466 transitions. [2022-11-20 10:35:09,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 10:35:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 29680 states and 40466 transitions. [2022-11-20 10:35:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-20 10:35:09,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:09,217 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:09,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:09,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:09,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:09,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash 255750057, now seen corresponding path program 1 times [2022-11-20 10:35:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:09,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224453282] [2022-11-20 10:35:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:09,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:09,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:09,434 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:09,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 10:35:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:12,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2022-11-20 10:35:29,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2022-11-20 10:35:35,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:35,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224453282] [2022-11-20 10:35:35,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224453282] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:35,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:35,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:35:35,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441823086] [2022-11-20 10:35:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:35,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:35,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:35:35,356 INFO L87 Difference]: Start difference. First operand 29680 states and 40466 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 10:35:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:39,448 INFO L93 Difference]: Finished difference Result 29686 states and 40471 transitions. [2022-11-20 10:35:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:35:39,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 247 [2022-11-20 10:35:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:39,559 INFO L225 Difference]: With dead ends: 29686 [2022-11-20 10:35:39,559 INFO L226 Difference]: Without dead ends: 29684 [2022-11-20 10:35:39,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:35:39,573 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2520 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2528 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:39,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2528 Valid, 7756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:35:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29684 states. [2022-11-20 10:35:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29684 to 29684. [2022-11-20 10:35:42,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29684 states, 20317 states have (on average 1.2498892553034404) internal successors, (25394), 20915 states have internal predecessors, (25394), 7511 states have call successors, (7511), 1873 states have call predecessors, (7511), 1853 states have return successors, (7564), 7290 states have call predecessors, (7564), 7507 states have call successors, (7564) [2022-11-20 10:35:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29684 states to 29684 states and 40469 transitions. [2022-11-20 10:35:42,197 INFO L78 Accepts]: Start accepts. Automaton has 29684 states and 40469 transitions. Word has length 247 [2022-11-20 10:35:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:42,197 INFO L495 AbstractCegarLoop]: Abstraction has 29684 states and 40469 transitions. [2022-11-20 10:35:42,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 10:35:42,197 INFO L276 IsEmpty]: Start isEmpty. Operand 29684 states and 40469 transitions. [2022-11-20 10:35:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-20 10:35:42,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:42,205 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:42,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:42,419 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:35:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 519963395, now seen corresponding path program 1 times [2022-11-20 10:35:42,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:42,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444099141] [2022-11-20 10:35:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:42,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:42,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:42,422 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:42,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 10:35:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:45,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:45,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2022-11-20 10:36:02,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2022-11-20 10:36:08,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:08,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444099141] [2022-11-20 10:36:08,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444099141] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:08,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:08,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:36:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335706067] [2022-11-20 10:36:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:08,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:08,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:08,763 INFO L87 Difference]: Start difference. First operand 29684 states and 40469 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 10:36:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:13,422 INFO L93 Difference]: Finished difference Result 29690 states and 40474 transitions. [2022-11-20 10:36:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:13,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 252 [2022-11-20 10:36:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:13,509 INFO L225 Difference]: With dead ends: 29690 [2022-11-20 10:36:13,509 INFO L226 Difference]: Without dead ends: 29688 [2022-11-20 10:36:13,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:36:13,519 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2520 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:13,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 7756 Invalid, 21 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:36:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29688 states. [2022-11-20 10:36:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29688 to 29688. [2022-11-20 10:36:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29688 states, 20320 states have (on average 1.2498523622047244) internal successors, (25397), 20918 states have internal predecessors, (25397), 7511 states have call successors, (7511), 1874 states have call predecessors, (7511), 1854 states have return successors, (7564), 7290 states have call predecessors, (7564), 7507 states have call successors, (7564) [2022-11-20 10:36:16,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29688 states to 29688 states and 40472 transitions. [2022-11-20 10:36:16,687 INFO L78 Accepts]: Start accepts. Automaton has 29688 states and 40472 transitions. Word has length 252 [2022-11-20 10:36:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:16,687 INFO L495 AbstractCegarLoop]: Abstraction has 29688 states and 40472 transitions. [2022-11-20 10:36:16,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 10:36:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 29688 states and 40472 transitions. [2022-11-20 10:36:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 10:36:16,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:16,697 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:16,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:16,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:16,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:36:16,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2135715927, now seen corresponding path program 1 times [2022-11-20 10:36:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:16,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863581880] [2022-11-20 10:36:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:16,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:16,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:16,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:16,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 10:36:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:20,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2022-11-20 10:36:38,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2022-11-20 10:36:44,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:36:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863581880] [2022-11-20 10:36:44,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863581880] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:44,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:44,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:36:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847677075] [2022-11-20 10:36:44,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:36:44,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:44,359 INFO L87 Difference]: Start difference. First operand 29688 states and 40472 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 10:36:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:49,086 INFO L93 Difference]: Finished difference Result 31184 states and 41969 transitions. [2022-11-20 10:36:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 257 [2022-11-20 10:36:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:49,178 INFO L225 Difference]: With dead ends: 31184 [2022-11-20 10:36:49,178 INFO L226 Difference]: Without dead ends: 31182 [2022-11-20 10:36:49,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:36:49,191 INFO L413 NwaCegarLoop]: 2611 mSDtfsCounter, 2410 mSDsluCounter, 5387 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 7998 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:49,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2416 Valid, 7998 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:36:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31182 states. [2022-11-20 10:36:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31182 to 31180. [2022-11-20 10:36:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31180 states, 21346 states have (on average 1.2434648177644523) internal successors, (26543), 21962 states have internal predecessors, (26543), 7685 states have call successors, (7685), 2166 states have call predecessors, (7685), 2146 states have return successors, (7738), 7464 states have call predecessors, (7738), 7681 states have call successors, (7738) [2022-11-20 10:36:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31180 states to 31180 states and 41966 transitions. [2022-11-20 10:36:52,407 INFO L78 Accepts]: Start accepts. Automaton has 31180 states and 41966 transitions. Word has length 257 [2022-11-20 10:36:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:52,407 INFO L495 AbstractCegarLoop]: Abstraction has 31180 states and 41966 transitions. [2022-11-20 10:36:52,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 10:36:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 31180 states and 41966 transitions. [2022-11-20 10:36:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-20 10:36:52,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:52,418 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:52,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:52,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:52,631 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:36:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:52,631 INFO L85 PathProgramCache]: Analyzing trace with hash -369683837, now seen corresponding path program 1 times [2022-11-20 10:36:52,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:36:52,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052357291] [2022-11-20 10:36:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:52,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:36:52,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:36:52,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:36:52,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 10:36:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:56,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:56,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-11-20 10:37:13,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-11-20 10:37:19,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:19,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052357291] [2022-11-20 10:37:19,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052357291] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:19,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:37:19,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:37:19,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346219283] [2022-11-20 10:37:19,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:19,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:19,523 INFO L87 Difference]: Start difference. First operand 31180 states and 41966 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 10:37:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:24,426 INFO L93 Difference]: Finished difference Result 31186 states and 41971 transitions. [2022-11-20 10:37:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 262 [2022-11-20 10:37:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:24,509 INFO L225 Difference]: With dead ends: 31186 [2022-11-20 10:37:24,509 INFO L226 Difference]: Without dead ends: 31184 [2022-11-20 10:37:24,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:37:24,521 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2520 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:24,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 7756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:37:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31184 states. [2022-11-20 10:37:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31184 to 31184. [2022-11-20 10:37:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31184 states, 21349 states have (on average 1.2434306056489766) internal successors, (26546), 21965 states have internal predecessors, (26546), 7685 states have call successors, (7685), 2167 states have call predecessors, (7685), 2147 states have return successors, (7738), 7464 states have call predecessors, (7738), 7681 states have call successors, (7738) [2022-11-20 10:37:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31184 states to 31184 states and 41969 transitions. [2022-11-20 10:37:28,388 INFO L78 Accepts]: Start accepts. Automaton has 31184 states and 41969 transitions. Word has length 262 [2022-11-20 10:37:28,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:28,389 INFO L495 AbstractCegarLoop]: Abstraction has 31184 states and 41969 transitions. [2022-11-20 10:37:28,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 10:37:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 31184 states and 41969 transitions. [2022-11-20 10:37:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-20 10:37:28,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:28,399 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:28,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:28,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:28,603 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 10:37:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash 481451945, now seen corresponding path program 1 times [2022-11-20 10:37:28,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:37:28,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511269025] [2022-11-20 10:37:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:28,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:37:28,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:37:28,611 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:37:28,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 10:37:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:31,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:31,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2022-11-20 10:37:49,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2022-11-20 10:37:56,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:37:56,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511269025] [2022-11-20 10:37:56,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511269025] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:56,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:37:56,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:37:56,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295017984] [2022-11-20 10:37:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:56,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:56,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:37:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:56,241 INFO L87 Difference]: Start difference. First operand 31184 states and 41969 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 10:38:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:01,302 INFO L93 Difference]: Finished difference Result 31190 states and 41974 transitions. [2022-11-20 10:38:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:01,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 267 [2022-11-20 10:38:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:01,383 INFO L225 Difference]: With dead ends: 31190 [2022-11-20 10:38:01,383 INFO L226 Difference]: Without dead ends: 31188 [2022-11-20 10:38:01,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:01,393 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2520 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:01,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2524 Valid, 7756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:38:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31188 states. [2022-11-20 10:38:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31188 to 31188. [2022-11-20 10:38:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31188 states, 21352 states have (on average 1.2433964031472462) internal successors, (26549), 21968 states have internal predecessors, (26549), 7685 states have call successors, (7685), 2168 states have call predecessors, (7685), 2148 states have return successors, (7738), 7464 states have call predecessors, (7738), 7681 states have call successors, (7738) [2022-11-20 10:38:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31188 states to 31188 states and 41972 transitions. [2022-11-20 10:38:05,189 INFO L78 Accepts]: Start accepts. Automaton has 31188 states and 41972 transitions. Word has length 267 [2022-11-20 10:38:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:05,189 INFO L495 AbstractCegarLoop]: Abstraction has 31188 states and 41972 transitions. [2022-11-20 10:38:05,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 10:38:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 31188 states and 41972 transitions. [2022-11-20 10:38:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-20 10:38:05,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:05,201 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:05,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:05,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:05,415 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:38:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:05,415 INFO L85 PathProgramCache]: Analyzing trace with hash 217346563, now seen corresponding path program 1 times [2022-11-20 10:38:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:05,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224715090] [2022-11-20 10:38:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:05,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:05,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:05,418 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:05,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 10:38:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:08,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:38:08,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2022-11-20 10:38:27,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2022-11-20 10:38:34,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:34,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224715090] [2022-11-20 10:38:34,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224715090] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:34,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:34,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 10:38:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926087289] [2022-11-20 10:38:34,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:34,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:34,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:34,181 INFO L87 Difference]: Start difference. First operand 31188 states and 41972 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 10:38:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:39,997 INFO L93 Difference]: Finished difference Result 31194 states and 41977 transitions. [2022-11-20 10:38:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:39,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 272 [2022-11-20 10:38:39,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:40,082 INFO L225 Difference]: With dead ends: 31194 [2022-11-20 10:38:40,082 INFO L226 Difference]: Without dead ends: 31192 [2022-11-20 10:38:40,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:40,093 INFO L413 NwaCegarLoop]: 2592 mSDtfsCounter, 2520 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:40,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2523 Valid, 7756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:38:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31192 states. [2022-11-20 10:38:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31192 to 31192. [2022-11-20 10:38:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31192 states, 21355 states have (on average 1.2433622102552095) internal successors, (26552), 21971 states have internal predecessors, (26552), 7685 states have call successors, (7685), 2169 states have call predecessors, (7685), 2149 states have return successors, (7738), 7464 states have call predecessors, (7738), 7681 states have call successors, (7738) [2022-11-20 10:38:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31192 states to 31192 states and 41975 transitions. [2022-11-20 10:38:43,841 INFO L78 Accepts]: Start accepts. Automaton has 31192 states and 41975 transitions. Word has length 272 [2022-11-20 10:38:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:43,841 INFO L495 AbstractCegarLoop]: Abstraction has 31192 states and 41975 transitions. [2022-11-20 10:38:43,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 10:38:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 31192 states and 41975 transitions. [2022-11-20 10:38:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-20 10:38:43,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:43,855 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:43,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:44,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:44,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 10:38:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash -500308068, now seen corresponding path program 1 times [2022-11-20 10:38:44,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:38:44,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668186288] [2022-11-20 10:38:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:44,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:38:44,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:38:44,086 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:38:44,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37a07dc9-499b-4a1d-b5df-c593dc22cd2c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 10:38:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:47,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:38:47,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-20 10:38:50,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:50,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:38:50,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668186288] [2022-11-20 10:38:50,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668186288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:50,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:50,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:38:50,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959626859] [2022-11-20 10:38:50,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:50,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:38:50,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:38:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:38:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:50,671 INFO L87 Difference]: Start difference. First operand 31192 states and 41975 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 10:38:52,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []