./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 --- 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 21:25:01,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:25:01,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:25:02,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:25:02,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:25:02,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:25:02,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:25:02,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:25:02,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:25:02,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:25:02,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:25:02,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:25:02,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:25:02,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:25:02,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:25:02,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:25:02,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:25:02,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:25:02,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:25:02,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:25:02,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:25:02,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:25:02,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:25:02,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:25:02,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:25:02,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:25:02,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:25:02,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:25:02,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:25:02,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:25:02,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:25:02,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:25:02,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:25:02,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:25:02,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:25:02,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:25:02,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:25:02,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:25:02,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:25:02,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:25:02,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:25:02,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 21:25:02,158 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:25:02,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:25:02,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:25:02,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:25:02,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:25:02,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:25:02,161 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:25:02,161 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:25:02,161 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:25:02,161 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:25:02,162 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:25:02,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:25:02,162 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:25:02,163 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:25:02,163 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:25:02,163 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:25:02,163 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:25:02,164 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:25:02,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:25:02,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:25:02,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:25:02,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:25:02,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:25:02,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:25:02,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:25:02,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:25:02,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:25:02,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:25:02,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:25:02,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:25:02,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:25:02,169 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:25:02,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:25:02,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:25:02,169 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:25:02,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:25:02,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:25:02,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:25:02,171 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_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 [2022-11-20 21:25:02,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:25:02,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:25:02,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:25:02,517 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:25:02,517 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:25:02,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-20 21:25:05,891 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:25:06,638 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:25:06,639 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-20 21:25:06,691 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/data/ee9925113/3e0e4d7ec78a41e49f9cc79776db9cda/FLAG187605425 [2022-11-20 21:25:06,708 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/data/ee9925113/3e0e4d7ec78a41e49f9cc79776db9cda [2022-11-20 21:25:06,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:25:06,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:25:06,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:25:06,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:25:06,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:25:06,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:25:06" (1/1) ... [2022-11-20 21:25:06,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134bcc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:06, skipping insertion in model container [2022-11-20 21:25:06,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:25:06" (1/1) ... [2022-11-20 21:25:06,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:25:06,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:25:07,439 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 21:25:07,449 INFO L158 Benchmark]: Toolchain (without parser) took 736.13ms. Allocated memory is still 192.9MB. Free memory was 132.3MB in the beginning and 130.5MB in the end (delta: 1.8MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2022-11-20 21:25:07,450 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:25:07,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 733.69ms. Allocated memory is still 192.9MB. Free memory was 131.7MB in the beginning and 130.5MB in the end (delta: 1.2MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2022-11-20 21:25:07,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 733.69ms. Allocated memory is still 192.9MB. Free memory was 131.7MB in the beginning and 130.5MB in the end (delta: 1.2MB). Peak memory consumption was 45.5MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 --- 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 21:25:10,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:25:10,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:25:10,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:25:10,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:25:10,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:25:10,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:25:10,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:25:10,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:25:10,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:25:10,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:25:10,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:25:10,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:25:10,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:25:10,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:25:10,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:25:10,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:25:10,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:25:10,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:25:10,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:25:10,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:25:10,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:25:10,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:25:10,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:25:10,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:25:10,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:25:10,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:25:10,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:25:10,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:25:10,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:25:10,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:25:10,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:25:10,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:25:10,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:25:10,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:25:10,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:25:10,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:25:10,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:25:10,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:25:10,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:25:10,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:25:10,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 21:25:10,367 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:25:10,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:25:10,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:25:10,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:25:10,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:25:10,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:25:10,370 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:25:10,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:25:10,370 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:25:10,371 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:25:10,371 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:25:10,371 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:25:10,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:25:10,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:25:10,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:25:10,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:25:10,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:25:10,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:25:10,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:25:10,374 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:25:10,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:25:10,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:25:10,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:25:10,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:25:10,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:25:10,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:25:10,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:25:10,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:25:10,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:25:10,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:25:10,377 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:25:10,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:25:10,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:25:10,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:25:10,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:25:10,379 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_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 [2022-11-20 21:25:10,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:25:10,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:25:10,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:25:10,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:25:10,909 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:25:10,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-20 21:25:14,832 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:25:15,647 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:25:15,647 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-20 21:25:15,697 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/data/d5ba643fa/a1bd32e5e98a4d2ca42dd3762100c035/FLAGa68f4f2c1 [2022-11-20 21:25:15,716 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/data/d5ba643fa/a1bd32e5e98a4d2ca42dd3762100c035 [2022-11-20 21:25:15,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:25:15,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:25:15,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:25:15,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:25:15,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:25:15,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:25:15" (1/1) ... [2022-11-20 21:25:15,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbf596b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:15, skipping insertion in model container [2022-11-20 21:25:15,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:25:15" (1/1) ... [2022-11-20 21:25:15,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:25:16,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:25:19,703 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-20 21:25:19,708 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-20 21:25:19,716 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-20 21:25:19,717 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-20 21:25:19,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:25:19,851 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 21:25:19,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:25:20,468 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-20 21:25:20,469 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-20 21:25:20,469 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-20 21:25:20,470 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-20 21:25:20,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:25:20,564 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:25:21,067 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-20 21:25:21,069 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-20 21:25:21,070 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-20 21:25:21,070 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_28772a73-8b56-42e5-9da1-aea639773129/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-20 21:25:21,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:25:21,434 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:25:21,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21 WrapperNode [2022-11-20 21:25:21,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:25:21,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:25:21,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:25:21,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:25:21,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:21,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:21,794 INFO L138 Inliner]: procedures = 514, calls = 2414, calls flagged for inlining = 253, calls inlined = 226, statements flattened = 5251 [2022-11-20 21:25:21,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:25:21,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:25:21,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:25:21,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:25:21,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:21,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:21,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:21,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:22,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:22,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:22,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:22,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:22,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:25:22,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:25:22,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:25:22,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:25:22,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (1/1) ... [2022-11-20 21:25:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:25:22,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:25:22,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:25:22,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:25:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-20 21:25:22,321 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-20 21:25:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 21:25:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 21:25:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-20 21:25:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-20 21:25:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr [2022-11-20 21:25:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr [2022-11-20 21:25:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 21:25:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 21:25:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 21:25:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 21:25:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_interrupt [2022-11-20 21:25:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_interrupt [2022-11-20 21:25:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 21:25:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 21:25:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_rx_refill [2022-11-20 21:25:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_rx_refill [2022-11-20 21:25:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 21:25:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 21:25:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-20 21:25:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-20 21:25:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 21:25:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 21:25:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 21:25:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 21:25:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_poll_controller [2022-11-20 21:25:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_poll_controller [2022-11-20 21:25:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-20 21:25:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-20 21:25:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_mac_addr [2022-11-20 21:25:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_mac_addr [2022-11-20 21:25:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2022-11-20 21:25:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2022-11-20 21:25:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_tx_timeout [2022-11-20 21:25:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_tx_timeout [2022-11-20 21:25:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 21:25:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 21:25:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-20 21:25:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-20 21:25:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 21:25:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 21:25:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-20 21:25:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-20 21:25:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:25:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-20 21:25:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-20 21:25:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 21:25:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 21:25:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 21:25:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 21:25:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 21:25:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr_and_size [2022-11-20 21:25:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr_and_size [2022-11-20 21:25:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 21:25:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 21:25:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_probe [2022-11-20 21:25:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_probe [2022-11-20 21:25:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 21:25:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 21:25:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-20 21:25:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-20 21:25:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_len [2022-11-20 21:25:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_len [2022-11-20 21:25:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 21:25:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 21:25:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 21:25:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 21:25:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-20 21:25:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-20 21:25:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 21:25:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 21:25:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_suspend [2022-11-20 21:25:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_suspend [2022-11-20 21:25:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2022-11-20 21:25:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2022-11-20 21:25:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_open [2022-11-20 21:25:22,346 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_open [2022-11-20 21:25:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_len [2022-11-20 21:25:22,346 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_len [2022-11-20 21:25:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-20 21:25:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-20 21:25:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 21:25:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 21:25:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:25:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 21:25:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 21:25:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-20 21:25:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-20 21:25:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-20 21:25:22,349 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-20 21:25:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:25:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_pmt [2022-11-20 21:25:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_pmt [2022-11-20 21:25:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-20 21:25:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-20 21:25:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 21:25:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 21:25:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 21:25:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_free_tx_skbufs [2022-11-20 21:25:22,353 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_free_tx_skbufs [2022-11-20 21:25:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 21:25:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 21:25:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 21:25:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 21:25:22,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 21:25:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 21:25:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2022-11-20 21:25:22,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2022-11-20 21:25:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-11-20 21:25:22,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-11-20 21:25:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-20 21:25:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-20 21:25:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-20 21:25:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-20 21:25:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-20 21:25:22,368 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-20 21:25:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 21:25:22,369 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 21:25:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 21:25:22,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 21:25:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2022-11-20 21:25:22,370 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2022-11-20 21:25:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-20 21:25:22,371 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-20 21:25:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-20 21:25:22,371 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-20 21:25:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 21:25:22,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 21:25:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 21:25:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:25:22,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:25:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 21:25:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_disable [2022-11-20 21:25:22,373 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_disable [2022-11-20 21:25:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 21:25:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 21:25:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 21:25:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 21:25:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 21:25:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 21:25:22,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 21:25:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure desc_init_tx_desc [2022-11-20 21:25:22,374 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_init_tx_desc [2022-11-20 21:25:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 21:25:22,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 21:25:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-20 21:25:22,377 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-20 21:25:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-20 21:25:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-20 21:25:22,377 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-20 21:25:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-20 21:25:22,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-20 21:25:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-20 21:25:22,378 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-20 21:25:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 21:25:22,379 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 21:25:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-20 21:25:22,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-20 21:25:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-20 21:25:22,380 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-20 21:25:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-20 21:25:22,380 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-20 21:25:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_enable [2022-11-20 21:25:22,380 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_enable [2022-11-20 21:25:22,381 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 21:25:22,381 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 21:25:22,381 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-20 21:25:22,381 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-20 21:25:22,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:25:22,382 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_stop [2022-11-20 21:25:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_stop [2022-11-20 21:25:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_tx_owner [2022-11-20 21:25:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_tx_owner [2022-11-20 21:25:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 21:25:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 21:25:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_irq [2022-11-20 21:25:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_irq [2022-11-20 21:25:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 21:25:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 21:25:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 21:25:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 21:25:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 21:25:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 21:25:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 21:25:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 21:25:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-20 21:25:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-20 21:25:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 21:25:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 21:25:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-20 21:25:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-20 21:25:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 21:25:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 21:25:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-20 21:25:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-20 21:25:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_flow_ctrl [2022-11-20 21:25:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_flow_ctrl [2022-11-20 21:25:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 21:25:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 21:25:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_resume [2022-11-20 21:25:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_resume [2022-11-20 21:25:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 21:25:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 21:25:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 21:25:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 21:25:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 21:25:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 21:25:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_irq_wake [2022-11-20 21:25:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_irq_wake [2022-11-20 21:25:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_fs [2022-11-20 21:25:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_fs [2022-11-20 21:25:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 21:25:22,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 21:25:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 21:25:22,392 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 21:25:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_rx_mode [2022-11-20 21:25:22,392 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_rx_mode [2022-11-20 21:25:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-20 21:25:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-20 21:25:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 21:25:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 21:25:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 21:25:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 21:25:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 21:25:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 21:25:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 21:25:22,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 21:25:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 21:25:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 21:25:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-20 21:25:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-20 21:25:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-20 21:25:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-20 21:25:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2022-11-20 21:25:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2022-11-20 21:25:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 21:25:22,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 21:25:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-20 21:25:22,402 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-20 21:25:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2022-11-20 21:25:22,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2022-11-20 21:25:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-20 21:25:22,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-20 21:25:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 21:25:22,403 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 21:25:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-20 21:25:22,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-20 21:25:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-20 21:25:22,403 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-20 21:25:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_remove [2022-11-20 21:25:22,404 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_remove [2022-11-20 21:25:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_addr [2022-11-20 21:25:22,404 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_addr [2022-11-20 21:25:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-20 21:25:22,404 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-20 21:25:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-20 21:25:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-20 21:25:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 21:25:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 21:25:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_ls [2022-11-20 21:25:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_ls [2022-11-20 21:25:23,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:25:23,621 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:25:29,070 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 21:32:10,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 21:32:10,870 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:32:10,890 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:32:10,890 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 21:32:10,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:10 BoogieIcfgContainer [2022-11-20 21:32:10,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:32:10,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:32:10,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:32:10,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:32:10,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:25:15" (1/3) ... [2022-11-20 21:32:10,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715fe473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:10, skipping insertion in model container [2022-11-20 21:32:10,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:25:21" (2/3) ... [2022-11-20 21:32:10,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715fe473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:10, skipping insertion in model container [2022-11-20 21:32:10,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:10" (3/3) ... [2022-11-20 21:32:10,904 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-20 21:32:10,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:32:10,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 21:32:11,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:32:11,022 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=FINITE_AUTOMATA, 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;@2a05d953, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:32:11,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 21:32:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 2052 states, 1406 states have (on average 1.2532005689900427) internal successors, (1762), 1427 states have internal predecessors, (1762), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) [2022-11-20 21:32:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 21:32:11,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:11,052 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] [2022-11-20 21:32:11,052 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 21:32:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash 357510212, now seen corresponding path program 1 times [2022-11-20 21:32:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:11,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094303439] [2022-11-20 21:32:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:11,085 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 21:32:11,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:11,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:11,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:16,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 3910 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:32:16,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:16,185 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 21:32:16,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:16,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:16,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094303439] [2022-11-20 21:32:16,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094303439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:16,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:16,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:32:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196133061] [2022-11-20 21:32:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:16,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:32:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:32:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:32:16,230 INFO L87 Difference]: Start difference. First operand has 2052 states, 1406 states have (on average 1.2532005689900427) internal successors, (1762), 1427 states have internal predecessors, (1762), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 21:32:18,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:32:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:19,964 INFO L93 Difference]: Finished difference Result 5926 states and 8223 transitions. [2022-11-20 21:32:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:32:19,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 167 [2022-11-20 21:32:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:20,022 INFO L225 Difference]: With dead ends: 5926 [2022-11-20 21:32:20,023 INFO L226 Difference]: Without dead ends: 3893 [2022-11-20 21:32:20,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:32:20,056 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 2601 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 5883 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:20,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2601 Valid, 5883 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 21:32:20,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2022-11-20 21:32:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3889. [2022-11-20 21:32:20,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3889 states, 2655 states have (on average 1.224482109227872) internal successors, (3251), 2695 states have internal predecessors, (3251), 1004 states have call successors, (1004), 228 states have call predecessors, (1004), 227 states have return successors, (1001), 991 states have call predecessors, (1001), 1001 states have call successors, (1001) [2022-11-20 21:32:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 5256 transitions. [2022-11-20 21:32:20,415 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 5256 transitions. Word has length 167 [2022-11-20 21:32:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:20,417 INFO L495 AbstractCegarLoop]: Abstraction has 3889 states and 5256 transitions. [2022-11-20 21:32:20,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 21:32:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 5256 transitions. [2022-11-20 21:32:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-20 21:32:20,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:20,425 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] [2022-11-20 21:32:20,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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)] Ended with exit code 0 [2022-11-20 21:32:20,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:32:20,647 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 21:32:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1915221371, now seen corresponding path program 1 times [2022-11-20 21:32:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:20,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058979631] [2022-11-20 21:32:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:20,651 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 21:32:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:20,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:20,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:25,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 3956 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:32:25,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:25,867 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 21:32:25,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:25,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:25,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058979631] [2022-11-20 21:32:25,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058979631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:25,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:25,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:32:25,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400129656] [2022-11-20 21:32:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:25,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:32:25,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:32:25,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:32:25,872 INFO L87 Difference]: Start difference. First operand 3889 states and 5256 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 21:32:28,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:32:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:30,385 INFO L93 Difference]: Finished difference Result 10803 states and 14608 transitions. [2022-11-20 21:32:30,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:32:30,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 182 [2022-11-20 21:32:30,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:30,440 INFO L225 Difference]: With dead ends: 10803 [2022-11-20 21:32:30,441 INFO L226 Difference]: Without dead ends: 6945 [2022-11-20 21:32:30,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:32:30,456 INFO L413 NwaCegarLoop]: 3115 mSDtfsCounter, 2104 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 5726 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:30,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2104 Valid, 5726 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 21:32:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6945 states. [2022-11-20 21:32:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6945 to 6910. [2022-11-20 21:32:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6910 states, 4713 states have (on average 1.223000212179079) internal successors, (5764), 4787 states have internal predecessors, (5764), 1757 states have call successors, (1757), 440 states have call predecessors, (1757), 437 states have return successors, (1822), 1724 states have call predecessors, (1822), 1754 states have call successors, (1822) [2022-11-20 21:32:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6910 states to 6910 states and 9343 transitions. [2022-11-20 21:32:30,853 INFO L78 Accepts]: Start accepts. Automaton has 6910 states and 9343 transitions. Word has length 182 [2022-11-20 21:32:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:30,855 INFO L495 AbstractCegarLoop]: Abstraction has 6910 states and 9343 transitions. [2022-11-20 21:32:30,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 21:32:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6910 states and 9343 transitions. [2022-11-20 21:32:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-20 21:32:30,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:30,866 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] [2022-11-20 21:32:30,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:31,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:32:31,079 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 21:32:31,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1921440894, now seen corresponding path program 1 times [2022-11-20 21:32:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:31,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770291128] [2022-11-20 21:32:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:31,086 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 21:32:31,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:31,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:31,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:36,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 4021 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:32:36,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:36,427 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 21:32:36,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:36,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:36,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770291128] [2022-11-20 21:32:36,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770291128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:36,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:36,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:32:36,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234687031] [2022-11-20 21:32:36,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:36,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:32:36,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:32:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:32:36,431 INFO L87 Difference]: Start difference. First operand 6910 states and 9343 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 21:32:38,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:32:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:41,861 INFO L93 Difference]: Finished difference Result 19168 states and 25813 transitions. [2022-11-20 21:32:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:32:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 197 [2022-11-20 21:32:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:41,959 INFO L225 Difference]: With dead ends: 19168 [2022-11-20 21:32:41,959 INFO L226 Difference]: Without dead ends: 12289 [2022-11-20 21:32:41,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:32:41,999 INFO L413 NwaCegarLoop]: 4092 mSDtfsCounter, 2136 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 6691 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:42,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 6691 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 117 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 21:32:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12289 states. [2022-11-20 21:32:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12289 to 12250. [2022-11-20 21:32:42,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12250 states, 8323 states have (on average 1.2127838519764509) internal successors, (10094), 8459 states have internal predecessors, (10094), 3095 states have call successors, (3095), 834 states have call predecessors, (3095), 829 states have return successors, (3162), 3032 states have call predecessors, (3162), 3092 states have call successors, (3162) [2022-11-20 21:32:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12250 states to 12250 states and 16351 transitions. [2022-11-20 21:32:42,945 INFO L78 Accepts]: Start accepts. Automaton has 12250 states and 16351 transitions. Word has length 197 [2022-11-20 21:32:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:42,947 INFO L495 AbstractCegarLoop]: Abstraction has 12250 states and 16351 transitions. [2022-11-20 21:32:42,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 21:32:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 12250 states and 16351 transitions. [2022-11-20 21:32:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-20 21:32:42,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:42,954 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 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 21:32:43,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:43,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:32:43,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:32:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1242744284, now seen corresponding path program 1 times [2022-11-20 21:32:43,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:43,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786088764] [2022-11-20 21:32:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:43,183 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 21:32:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:43,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:43,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:48,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 4019 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:32:48,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:32:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-11-20 21:32:48,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:32:48,517 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:32:48,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786088764] [2022-11-20 21:32:48,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786088764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:32:48,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:32:48,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:32:48,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653903414] [2022-11-20 21:32:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:32:48,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:32:48,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:32:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:32:48,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:32:48,520 INFO L87 Difference]: Start difference. First operand 12250 states and 16351 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (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 21:32:50,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:32:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:32:52,570 INFO L93 Difference]: Finished difference Result 24535 states and 32728 transitions. [2022-11-20 21:32:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:32:52,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (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 219 [2022-11-20 21:32:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:32:52,686 INFO L225 Difference]: With dead ends: 24535 [2022-11-20 21:32:52,686 INFO L226 Difference]: Without dead ends: 18300 [2022-11-20 21:32:52,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 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 21:32:52,722 INFO L413 NwaCegarLoop]: 5282 mSDtfsCounter, 2600 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 7949 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:32:52,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 7949 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 21:32:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18300 states. [2022-11-20 21:32:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18300 to 18278. [2022-11-20 21:32:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18278 states, 12425 states have (on average 1.2129577464788732) internal successors, (15071), 12624 states have internal predecessors, (15071), 4607 states have call successors, (4607), 1250 states have call predecessors, (4607), 1243 states have return successors, (4709), 4517 states have call predecessors, (4709), 4604 states have call successors, (4709) [2022-11-20 21:32:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18278 states to 18278 states and 24387 transitions. [2022-11-20 21:32:53,924 INFO L78 Accepts]: Start accepts. Automaton has 18278 states and 24387 transitions. Word has length 219 [2022-11-20 21:32:53,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:32:53,925 INFO L495 AbstractCegarLoop]: Abstraction has 18278 states and 24387 transitions. [2022-11-20 21:32:53,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (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 21:32:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 18278 states and 24387 transitions. [2022-11-20 21:32:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-20 21:32:53,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:32:53,932 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 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 21:32:54,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:32:54,155 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 21:32:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:32:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1665446110, now seen corresponding path program 1 times [2022-11-20 21:32:54,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:32:54,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805143650] [2022-11-20 21:32:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:32:54,158 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 21:32:54,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:32:54,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:54,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:32:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:32:59,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 4019 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:32:59,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:33:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-11-20 21:33:05,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:33:05,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:33:05,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805143650] [2022-11-20 21:33:05,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805143650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:33:05,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:33:05,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:33:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045951287] [2022-11-20 21:33:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:33:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:33:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:33:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:33:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:33:05,421 INFO L87 Difference]: Start difference. First operand 18278 states and 24387 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 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 21:33:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:33:07,051 INFO L93 Difference]: Finished difference Result 18568 states and 24651 transitions. [2022-11-20 21:33:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:33:07,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 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 219 [2022-11-20 21:33:07,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:33:07,228 INFO L225 Difference]: With dead ends: 18568 [2022-11-20 21:33:07,229 INFO L226 Difference]: Without dead ends: 18566 [2022-11-20 21:33:07,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:33:07,236 INFO L413 NwaCegarLoop]: 2713 mSDtfsCounter, 2584 mSDsluCounter, 5465 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 8178 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:33:07,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2585 Valid, 8178 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 21:33:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18566 states. [2022-11-20 21:33:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18566 to 18564. [2022-11-20 21:33:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18564 states, 12617 states have (on average 1.2113814694459857) internal successors, (15284), 12828 states have internal predecessors, (15284), 4631 states have call successors, (4631), 1320 states have call predecessors, (4631), 1313 states have return successors, (4733), 4541 states have call predecessors, (4733), 4628 states have call successors, (4733) [2022-11-20 21:33:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18564 states to 18564 states and 24648 transitions. [2022-11-20 21:33:08,814 INFO L78 Accepts]: Start accepts. Automaton has 18564 states and 24648 transitions. Word has length 219 [2022-11-20 21:33:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:33:08,815 INFO L495 AbstractCegarLoop]: Abstraction has 18564 states and 24648 transitions. [2022-11-20 21:33:08,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 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 21:33:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18564 states and 24648 transitions. [2022-11-20 21:33:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-20 21:33:08,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:33:08,825 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:33:08,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-20 21:33:09,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:33:09,047 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 21:33:09,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:33:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1271905267, now seen corresponding path program 1 times [2022-11-20 21:33:09,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:33:09,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940423212] [2022-11-20 21:33:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:33:09,052 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 21:33:09,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:33:09,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:33:09,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:33:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:33:14,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 4026 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:33:14,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:33:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-11-20 21:33:20,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:33:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-11-20 21:33:23,069 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:33:23,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940423212] [2022-11-20 21:33:23,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940423212] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:33:23,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:33:23,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:33:23,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412818494] [2022-11-20 21:33:23,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:33:23,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:33:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:33:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:33:23,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:33:23,071 INFO L87 Difference]: Start difference. First operand 18564 states and 24648 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:33:25,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:33:25,092 INFO L93 Difference]: Finished difference Result 18570 states and 24653 transitions. [2022-11-20 21:33:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:33:25,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 224 [2022-11-20 21:33:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:33:25,164 INFO L225 Difference]: With dead ends: 18570 [2022-11-20 21:33:25,165 INFO L226 Difference]: Without dead ends: 18568 [2022-11-20 21:33:25,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:33:25,173 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2626 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2636 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:33:25,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2636 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:33:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18568 states. [2022-11-20 21:33:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18568 to 18568. [2022-11-20 21:33:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18568 states, 12620 states have (on average 1.2113312202852615) internal successors, (15287), 12831 states have internal predecessors, (15287), 4631 states have call successors, (4631), 1321 states have call predecessors, (4631), 1314 states have return successors, (4733), 4541 states have call predecessors, (4733), 4628 states have call successors, (4733) [2022-11-20 21:33:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18568 states to 18568 states and 24651 transitions. [2022-11-20 21:33:26,472 INFO L78 Accepts]: Start accepts. Automaton has 18568 states and 24651 transitions. Word has length 224 [2022-11-20 21:33:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:33:26,473 INFO L495 AbstractCegarLoop]: Abstraction has 18568 states and 24651 transitions. [2022-11-20 21:33:26,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:33:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 18568 states and 24651 transitions. [2022-11-20 21:33:26,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-20 21:33:26,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:33:26,492 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 13, 13, 13, 13, 13, 13, 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 21:33:26,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:33:26,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:33:26,711 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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 21:33:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:33:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1340629659, now seen corresponding path program 1 times [2022-11-20 21:33:26,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:33:26,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30124815] [2022-11-20 21:33:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:33:26,715 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 21:33:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:33:26,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:33:26,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:33:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:33:32,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 4054 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:33:32,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:33:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2022-11-20 21:33:32,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:33:32,962 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:33:32,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30124815] [2022-11-20 21:33:32,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30124815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:33:32,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:33:32,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:33:32,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692499812] [2022-11-20 21:33:32,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:33:32,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:33:32,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:33:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:33:32,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:33:32,964 INFO L87 Difference]: Start difference. First operand 18568 states and 24651 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 21:33:35,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:33:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:33:38,285 INFO L93 Difference]: Finished difference Result 40983 states and 54444 transitions. [2022-11-20 21:33:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:33:38,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 222 [2022-11-20 21:33:38,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:33:38,402 INFO L225 Difference]: With dead ends: 40983 [2022-11-20 21:33:38,403 INFO L226 Difference]: Without dead ends: 22446 [2022-11-20 21:33:38,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 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 21:33:38,479 INFO L413 NwaCegarLoop]: 4892 mSDtfsCounter, 2539 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 7535 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:33:38,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 7535 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 21:33:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22446 states. [2022-11-20 21:33:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22446 to 22410. [2022-11-20 21:33:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22410 states, 15344 states have (on average 1.2107664233576643) internal successors, (18578), 15596 states have internal predecessors, (18578), 5488 states have call successors, (5488), 1582 states have call predecessors, (5488), 1575 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:33:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22410 states to 22410 states and 29687 transitions. [2022-11-20 21:33:40,529 INFO L78 Accepts]: Start accepts. Automaton has 22410 states and 29687 transitions. Word has length 222 [2022-11-20 21:33:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:33:40,530 INFO L495 AbstractCegarLoop]: Abstraction has 22410 states and 29687 transitions. [2022-11-20 21:33:40,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 21:33:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 22410 states and 29687 transitions. [2022-11-20 21:33:40,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-20 21:33:40,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:33:40,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:40,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:33:40,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:33:40,759 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 21:33:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:33:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1725525502, now seen corresponding path program 1 times [2022-11-20 21:33:40,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:33:40,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521462675] [2022-11-20 21:33:40,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:33:40,763 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 21:33:40,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:33:40,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:33:40,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:33:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:33:46,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 4033 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:33:46,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:33:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-20 21:33:53,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:33:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-20 21:33:56,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:33:56,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521462675] [2022-11-20 21:33:56,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521462675] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:33:56,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:33:56,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:33:56,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921443317] [2022-11-20 21:33:56,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:33:56,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:33:56,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:33:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:33:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:33:56,608 INFO L87 Difference]: Start difference. First operand 22410 states and 29687 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:33:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:33:58,962 INFO L93 Difference]: Finished difference Result 22416 states and 29692 transitions. [2022-11-20 21:33:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:33:58,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 229 [2022-11-20 21:33:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:33:59,037 INFO L225 Difference]: With dead ends: 22416 [2022-11-20 21:33:59,037 INFO L226 Difference]: Without dead ends: 22414 [2022-11-20 21:33:59,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:33:59,047 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2626 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:33:59,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2635 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:33:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22414 states. [2022-11-20 21:34:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22414 to 22414. [2022-11-20 21:34:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22414 states, 15347 states have (on average 1.2107252231706522) internal successors, (18581), 15599 states have internal predecessors, (18581), 5488 states have call successors, (5488), 1583 states have call predecessors, (5488), 1576 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:34:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22414 states to 22414 states and 29690 transitions. [2022-11-20 21:34:01,032 INFO L78 Accepts]: Start accepts. Automaton has 22414 states and 29690 transitions. Word has length 229 [2022-11-20 21:34:01,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:34:01,032 INFO L495 AbstractCegarLoop]: Abstraction has 22414 states and 29690 transitions. [2022-11-20 21:34:01,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:34:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 22414 states and 29690 transitions. [2022-11-20 21:34:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 21:34:01,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:34:01,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:01,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:34:01,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:34:01,251 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 21:34:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:34:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2015434131, now seen corresponding path program 1 times [2022-11-20 21:34:01,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:34:01,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264742060] [2022-11-20 21:34:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:34:01,255 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 21:34:01,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:34:01,257 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:34:01,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:34:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:34:06,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 4040 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:34:06,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:34:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2022-11-20 21:34:14,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:34:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2022-11-20 21:34:16,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:34:16,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264742060] [2022-11-20 21:34:16,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264742060] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:34:16,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:34:16,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:34:16,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603272108] [2022-11-20 21:34:16,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:34:16,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:34:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:34:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:34:16,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:34:16,968 INFO L87 Difference]: Start difference. First operand 22414 states and 29690 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:34:19,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:34:19,064 INFO L93 Difference]: Finished difference Result 22420 states and 29695 transitions. [2022-11-20 21:34:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:34:19,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 234 [2022-11-20 21:34:19,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:34:19,143 INFO L225 Difference]: With dead ends: 22420 [2022-11-20 21:34:19,143 INFO L226 Difference]: Without dead ends: 22418 [2022-11-20 21:34:19,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:34:19,154 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2626 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2634 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:34:19,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2634 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:34:19,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22418 states. [2022-11-20 21:34:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22418 to 22418. [2022-11-20 21:34:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22418 states, 15350 states have (on average 1.2106840390879479) internal successors, (18584), 15602 states have internal predecessors, (18584), 5488 states have call successors, (5488), 1584 states have call predecessors, (5488), 1577 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:34:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22418 states to 22418 states and 29693 transitions. [2022-11-20 21:34:21,088 INFO L78 Accepts]: Start accepts. Automaton has 22418 states and 29693 transitions. Word has length 234 [2022-11-20 21:34:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:34:21,089 INFO L495 AbstractCegarLoop]: Abstraction has 22418 states and 29693 transitions. [2022-11-20 21:34:21,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:34:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 22418 states and 29693 transitions. [2022-11-20 21:34:21,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 21:34:21,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:34:21,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:21,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 21:34:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:34:21,304 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 21:34:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:34:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1737624802, now seen corresponding path program 1 times [2022-11-20 21:34:21,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:34:21,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492564042] [2022-11-20 21:34:21,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:34:21,308 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 21:34:21,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:34:21,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:34:21,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:34:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:34:27,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 4047 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:34:27,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:34:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-20 21:34:34,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:34:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-20 21:34:37,099 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:34:37,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492564042] [2022-11-20 21:34:37,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492564042] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:34:37,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:34:37,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:34:37,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073119469] [2022-11-20 21:34:37,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:34:37,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:34:37,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:34:37,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:34:37,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:34:37,101 INFO L87 Difference]: Start difference. First operand 22418 states and 29693 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:34:39,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:34:39,518 INFO L93 Difference]: Finished difference Result 22424 states and 29698 transitions. [2022-11-20 21:34:39,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:34:39,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 239 [2022-11-20 21:34:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:34:39,584 INFO L225 Difference]: With dead ends: 22424 [2022-11-20 21:34:39,584 INFO L226 Difference]: Without dead ends: 22422 [2022-11-20 21:34:39,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:34:39,591 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2626 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2633 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:34:39,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2633 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:34:39,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22422 states. [2022-11-20 21:34:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22422 to 22422. [2022-11-20 21:34:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22422 states, 15353 states have (on average 1.2106428711001107) internal successors, (18587), 15605 states have internal predecessors, (18587), 5488 states have call successors, (5488), 1585 states have call predecessors, (5488), 1578 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:34:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22422 states to 22422 states and 29696 transitions. [2022-11-20 21:34:41,631 INFO L78 Accepts]: Start accepts. Automaton has 22422 states and 29696 transitions. Word has length 239 [2022-11-20 21:34:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:34:41,631 INFO L495 AbstractCegarLoop]: Abstraction has 22422 states and 29696 transitions. [2022-11-20 21:34:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:34:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 22422 states and 29696 transitions. [2022-11-20 21:34:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-20 21:34:41,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:34:41,637 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 5, 5, 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] [2022-11-20 21:34:41,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:34:41,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:34:41,859 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 21:34:41,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:34:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash -709579730, now seen corresponding path program 1 times [2022-11-20 21:34:41,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:34:41,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377696463] [2022-11-20 21:34:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:34:41,862 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 21:34:41,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:34:41,863 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:34:41,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:34:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:34:47,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 4103 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 21:34:47,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:34:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 142 proven. 3 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2022-11-20 21:34:53,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:34:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2022-11-20 21:34:58,561 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:34:58,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377696463] [2022-11-20 21:34:58,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377696463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:34:58,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [805157101] [2022-11-20 21:34:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:34:58,562 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:34:58,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:34:58,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:34:58,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-20 21:35:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:35:05,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 4103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:35:05,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:35:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2022-11-20 21:35:15,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:35:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2022-11-20 21:35:18,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [805157101] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:35:18,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:35:18,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2022-11-20 21:35:18,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999368639] [2022-11-20 21:35:18,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:35:18,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:35:18,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:35:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:35:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-20 21:35:18,986 INFO L87 Difference]: Start difference. First operand 22422 states and 29696 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:35:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:35:22,540 INFO L93 Difference]: Finished difference Result 22428 states and 29701 transitions. [2022-11-20 21:35:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:35:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:35:22,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:35:22,595 INFO L225 Difference]: With dead ends: 22428 [2022-11-20 21:35:22,596 INFO L226 Difference]: Without dead ends: 22426 [2022-11-20 21:35:22,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 1019 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-20 21:35:22,605 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2615 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2621 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:35:22,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2621 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:35:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22426 states. [2022-11-20 21:35:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22426 to 22426. [2022-11-20 21:35:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22426 states, 15356 states have (on average 1.2106017191977076) internal successors, (18590), 15608 states have internal predecessors, (18590), 5488 states have call successors, (5488), 1586 states have call predecessors, (5488), 1579 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:35:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22426 states to 22426 states and 29699 transitions. [2022-11-20 21:35:24,840 INFO L78 Accepts]: Start accepts. Automaton has 22426 states and 29699 transitions. Word has length 262 [2022-11-20 21:35:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:35:24,841 INFO L495 AbstractCegarLoop]: Abstraction has 22426 states and 29699 transitions. [2022-11-20 21:35:24,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:35:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 22426 states and 29699 transitions. [2022-11-20 21:35:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-20 21:35:24,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:35:24,845 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:35:24,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:35:25,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-20 21:35:25,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:35:25,259 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 21:35:25,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:35:25,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1218072957, now seen corresponding path program 1 times [2022-11-20 21:35:25,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:35:25,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982728750] [2022-11-20 21:35:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:35:25,263 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 21:35:25,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:35:25,264 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:35:25,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:35:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:35:31,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 4110 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 21:35:31,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:35:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 142 proven. 3 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-20 21:35:36,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:35:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-11-20 21:35:42,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:35:42,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982728750] [2022-11-20 21:35:42,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982728750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:35:42,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032997410] [2022-11-20 21:35:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:35:42,100 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:35:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:35:42,101 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:35:42,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-20 21:35:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:35:49,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 4110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:35:49,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:35:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2022-11-20 21:35:59,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:36:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2022-11-20 21:36:03,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032997410] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:36:03,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:36:03,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2022-11-20 21:36:03,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936047186] [2022-11-20 21:36:03,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:36:03,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:36:03,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:36:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:36:03,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-20 21:36:03,083 INFO L87 Difference]: Start difference. First operand 22426 states and 29699 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:36:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:36:06,526 INFO L93 Difference]: Finished difference Result 22432 states and 29704 transitions. [2022-11-20 21:36:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:36:06,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:36:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:36:06,584 INFO L225 Difference]: With dead ends: 22432 [2022-11-20 21:36:06,584 INFO L226 Difference]: Without dead ends: 22430 [2022-11-20 21:36:06,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-20 21:36:06,591 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2615 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2620 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:36:06,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2620 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:36:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22430 states. [2022-11-20 21:36:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22430 to 22430. [2022-11-20 21:36:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22430 states, 15359 states have (on average 1.2105605833713133) internal successors, (18593), 15611 states have internal predecessors, (18593), 5488 states have call successors, (5488), 1587 states have call predecessors, (5488), 1580 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:36:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22430 states to 22430 states and 29702 transitions. [2022-11-20 21:36:08,946 INFO L78 Accepts]: Start accepts. Automaton has 22430 states and 29702 transitions. Word has length 267 [2022-11-20 21:36:08,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:36:08,947 INFO L495 AbstractCegarLoop]: Abstraction has 22430 states and 29702 transitions. [2022-11-20 21:36:08,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:36:08,947 INFO L276 IsEmpty]: Start isEmpty. Operand 22430 states and 29702 transitions. [2022-11-20 21:36:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-20 21:36:08,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:36:08,952 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 6, 6, 6, 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] [2022-11-20 21:36:09,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-20 21:36:09,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:36:09,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:36:09,377 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 21:36:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:36:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash -211829426, now seen corresponding path program 1 times [2022-11-20 21:36:09,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:36:09,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870133512] [2022-11-20 21:36:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:36:09,380 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 21:36:09,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:36:09,381 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:36:09,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:36:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:36:15,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 4117 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 21:36:15,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:36:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 142 proven. 3 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2022-11-20 21:36:21,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:36:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2022-11-20 21:36:26,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:36:26,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870133512] [2022-11-20 21:36:26,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870133512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:36:26,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [15667325] [2022-11-20 21:36:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:36:26,534 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:36:26,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:36:26,539 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:36:26,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-20 21:36:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:36:34,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 4117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:36:34,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:36:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2022-11-20 21:36:44,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:36:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2022-11-20 21:36:48,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [15667325] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:36:48,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:36:48,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2022-11-20 21:36:48,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045711775] [2022-11-20 21:36:48,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:36:48,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:36:48,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:36:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:36:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-20 21:36:48,605 INFO L87 Difference]: Start difference. First operand 22430 states and 29702 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:36:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:36:52,043 INFO L93 Difference]: Finished difference Result 22436 states and 29707 transitions. [2022-11-20 21:36:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:36:52,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:36:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:36:52,099 INFO L225 Difference]: With dead ends: 22436 [2022-11-20 21:36:52,099 INFO L226 Difference]: Without dead ends: 22434 [2022-11-20 21:36:52,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1059 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-20 21:36:52,109 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2615 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2619 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:36:52,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2619 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:36:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22434 states. [2022-11-20 21:36:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22434 to 22434. [2022-11-20 21:36:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22434 states, 15362 states have (on average 1.2105194636115089) internal successors, (18596), 15614 states have internal predecessors, (18596), 5488 states have call successors, (5488), 1588 states have call predecessors, (5488), 1581 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:36:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22434 states to 22434 states and 29705 transitions. [2022-11-20 21:36:54,359 INFO L78 Accepts]: Start accepts. Automaton has 22434 states and 29705 transitions. Word has length 272 [2022-11-20 21:36:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:36:54,360 INFO L495 AbstractCegarLoop]: Abstraction has 22434 states and 29705 transitions. [2022-11-20 21:36:54,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 21:36:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 22434 states and 29705 transitions. [2022-11-20 21:36:54,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-20 21:36:54,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:36:54,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:54,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:36:54,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-20 21:36:54,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:36:54,783 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 21:36:54,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:36:54,783 INFO L85 PathProgramCache]: Analyzing trace with hash 28202334, now seen corresponding path program 1 times [2022-11-20 21:36:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:36:54,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536505952] [2022-11-20 21:36:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:36:54,787 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 21:36:54,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:36:54,789 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:36:54,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:37:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:37:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 4075 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:37:01,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:37:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2022-11-20 21:37:09,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:37:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2022-11-20 21:37:12,627 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:37:12,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536505952] [2022-11-20 21:37:12,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536505952] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:37:12,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:37:12,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:37:12,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059106292] [2022-11-20 21:37:12,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:37:12,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:37:12,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:37:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:37:12,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:37:12,630 INFO L87 Difference]: Start difference. First operand 22434 states and 29705 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:37:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:37:15,506 INFO L93 Difference]: Finished difference Result 22440 states and 29710 transitions. [2022-11-20 21:37:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:37:15,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 259 [2022-11-20 21:37:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:37:15,565 INFO L225 Difference]: With dead ends: 22440 [2022-11-20 21:37:15,565 INFO L226 Difference]: Without dead ends: 22438 [2022-11-20 21:37:15,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:37:15,574 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2626 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:37:15,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:37:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22438 states. [2022-11-20 21:37:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22438 to 22438. [2022-11-20 21:37:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22438 states, 15365 states have (on average 1.2104783599088837) internal successors, (18599), 15617 states have internal predecessors, (18599), 5488 states have call successors, (5488), 1589 states have call predecessors, (5488), 1582 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:37:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22438 states to 22438 states and 29708 transitions. [2022-11-20 21:37:17,946 INFO L78 Accepts]: Start accepts. Automaton has 22438 states and 29708 transitions. Word has length 259 [2022-11-20 21:37:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:37:17,947 INFO L495 AbstractCegarLoop]: Abstraction has 22438 states and 29708 transitions. [2022-11-20 21:37:17,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 21:37:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 22438 states and 29708 transitions. [2022-11-20 21:37:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-20 21:37:17,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:37:17,954 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 6, 6, 6, 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] [2022-11-20 21:37:18,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 21:37:18,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:37:18,167 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 21:37:18,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:37:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash 640783982, now seen corresponding path program 1 times [2022-11-20 21:37:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:37:18,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128401955] [2022-11-20 21:37:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:37:18,171 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 21:37:18,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:37:18,172 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:37:18,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 21:37:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:37:24,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 4131 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 21:37:24,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:37:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 142 proven. 3 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2022-11-20 21:37:30,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:37:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2022-11-20 21:37:35,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:37:35,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128401955] [2022-11-20 21:37:35,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128401955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:37:35,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1866285229] [2022-11-20 21:37:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:37:35,950 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:37:35,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:37:35,951 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:37:35,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-20 21:37:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:37:44,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 4131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:37:44,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:37:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2022-11-20 21:37:54,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:37:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2022-11-20 21:37:58,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1866285229] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:37:58,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:37:58,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2022-11-20 21:37:58,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551890860] [2022-11-20 21:37:58,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:37:58,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:37:58,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:37:58,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:37:58,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-20 21:37:58,927 INFO L87 Difference]: Start difference. First operand 22438 states and 29708 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 21:38:02,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:38:02,796 INFO L93 Difference]: Finished difference Result 22444 states and 29713 transitions. [2022-11-20 21:38:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:38:02,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 282 [2022-11-20 21:38:02,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:38:02,854 INFO L225 Difference]: With dead ends: 22444 [2022-11-20 21:38:02,854 INFO L226 Difference]: Without dead ends: 22442 [2022-11-20 21:38:02,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1127 GetRequests, 1099 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-20 21:38:02,864 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2615 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:38:02,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 8060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:38:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22442 states. [2022-11-20 21:38:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22442 to 22442. [2022-11-20 21:38:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22442 states, 15368 states have (on average 1.2104372722540344) internal successors, (18602), 15620 states have internal predecessors, (18602), 5488 states have call successors, (5488), 1590 states have call predecessors, (5488), 1583 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:38:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22442 states to 22442 states and 29711 transitions. [2022-11-20 21:38:05,628 INFO L78 Accepts]: Start accepts. Automaton has 22442 states and 29711 transitions. Word has length 282 [2022-11-20 21:38:05,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:38:05,629 INFO L495 AbstractCegarLoop]: Abstraction has 22442 states and 29711 transitions. [2022-11-20 21:38:05,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 21:38:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 22442 states and 29711 transitions. [2022-11-20 21:38:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-20 21:38:05,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:38:05,634 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 4, 4, 4, 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] [2022-11-20 21:38:05,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-20 21:38:05,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 21:38:06,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:06,035 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 21:38:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:38:06,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1420178046, now seen corresponding path program 1 times [2022-11-20 21:38:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:38:06,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678746502] [2022-11-20 21:38:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:38:06,038 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 21:38:06,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:38:06,039 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:38:06,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 21:38:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:38:13,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 4089 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:38:13,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:38:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1086 trivial. 0 not checked. [2022-11-20 21:38:21,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:38:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1086 trivial. 0 not checked. [2022-11-20 21:38:24,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:38:24,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678746502] [2022-11-20 21:38:24,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678746502] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:38:24,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:38:24,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:38:24,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496132410] [2022-11-20 21:38:24,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:38:24,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:38:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:38:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:38:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:38:24,332 INFO L87 Difference]: Start difference. First operand 22442 states and 29711 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 21:38:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:38:27,598 INFO L93 Difference]: Finished difference Result 22546 states and 29789 transitions. [2022-11-20 21:38:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:38:27,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 269 [2022-11-20 21:38:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:38:27,665 INFO L225 Difference]: With dead ends: 22546 [2022-11-20 21:38:27,665 INFO L226 Difference]: Without dead ends: 22542 [2022-11-20 21:38:27,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:38:27,676 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 2575 mSDsluCounter, 5428 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 8121 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:38:27,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 8121 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:38:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22542 states. [2022-11-20 21:38:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22542 to 22540. [2022-11-20 21:38:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22540 states, 15438 states have (on average 1.2096774193548387) internal successors, (18675), 15689 states have internal predecessors, (18675), 5488 states have call successors, (5488), 1619 states have call predecessors, (5488), 1611 states have return successors, (5621), 5385 states have call predecessors, (5621), 5485 states have call successors, (5621) [2022-11-20 21:38:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22540 states to 22540 states and 29784 transitions. [2022-11-20 21:38:30,549 INFO L78 Accepts]: Start accepts. Automaton has 22540 states and 29784 transitions. Word has length 269 [2022-11-20 21:38:30,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:38:30,550 INFO L495 AbstractCegarLoop]: Abstraction has 22540 states and 29784 transitions. [2022-11-20 21:38:30,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 21:38:30,551 INFO L276 IsEmpty]: Start isEmpty. Operand 22540 states and 29784 transitions. [2022-11-20 21:38:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-20 21:38:30,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:38:30,558 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 4, 4, 4, 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] [2022-11-20 21:38:30,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 21:38:30,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:30,771 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 21:38:30,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:38:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1430146067, now seen corresponding path program 1 times [2022-11-20 21:38:30,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:38:30,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927850053] [2022-11-20 21:38:30,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:38:30,776 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 21:38:30,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:38:30,778 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:38:30,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 21:38:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:38:38,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 4096 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:38:38,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:38:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2022-11-20 21:38:46,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:38:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2022-11-20 21:38:49,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:38:49,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927850053] [2022-11-20 21:38:49,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927850053] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:38:49,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:38:49,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:38:49,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955516546] [2022-11-20 21:38:49,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:38:49,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:38:49,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:38:49,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:38:49,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:38:49,378 INFO L87 Difference]: Start difference. First operand 22540 states and 29784 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 21:38:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:38:52,795 INFO L93 Difference]: Finished difference Result 23848 states and 31170 transitions. [2022-11-20 21:38:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:38:52,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 274 [2022-11-20 21:38:52,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:38:52,846 INFO L225 Difference]: With dead ends: 23848 [2022-11-20 21:38:52,846 INFO L226 Difference]: Without dead ends: 23517 [2022-11-20 21:38:52,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:38:52,853 INFO L413 NwaCegarLoop]: 2841 mSDtfsCounter, 2549 mSDsluCounter, 5909 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 8750 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:38:52,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2549 Valid, 8750 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:38:52,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23517 states. [2022-11-20 21:38:55,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23517 to 23513. [2022-11-20 21:38:55,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23513 states, 16063 states have (on average 1.2038224491066425) internal successors, (19337), 16298 states have internal predecessors, (19337), 5630 states have call successors, (5630), 1824 states have call predecessors, (5630), 1818 states have return successors, (5766), 5544 states have call predecessors, (5766), 5630 states have call successors, (5766) [2022-11-20 21:38:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23513 states to 23513 states and 30733 transitions. [2022-11-20 21:38:55,884 INFO L78 Accepts]: Start accepts. Automaton has 23513 states and 30733 transitions. Word has length 274 [2022-11-20 21:38:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:38:55,884 INFO L495 AbstractCegarLoop]: Abstraction has 23513 states and 30733 transitions. [2022-11-20 21:38:55,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 21:38:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 23513 states and 30733 transitions. [2022-11-20 21:38:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-20 21:38:55,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:38:55,891 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 13, 13, 13, 13, 13, 13, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:38:55,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 21:38:56,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:56,091 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:38:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:38:56,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1285579460, now seen corresponding path program 1 times [2022-11-20 21:38:56,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:38:56,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476369607] [2022-11-20 21:38:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:38:56,095 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 21:38:56,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:38:56,096 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -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 21:38:56,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28772a73-8b56-42e5-9da1-aea639773129/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 21:39:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:39:03,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 4180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:39:03,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:39:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-20 21:39:04,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:39:04,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:39:04,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476369607] [2022-11-20 21:39:04,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476369607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:39:04,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:39:04,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:39:04,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476771728] [2022-11-20 21:39:04,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:39:04,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:39:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:39:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:39:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:04,579 INFO L87 Difference]: Start difference. First operand 23513 states and 30733 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 21:39:06,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []