./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.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_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 --- 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 21:07:13,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:07:13,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:07:14,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:07:14,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:07:14,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:07:14,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:07:14,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:07:14,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:07:14,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:07:14,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:07:14,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:07:14,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:07:14,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:07:14,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:07:14,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:07:14,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:07:14,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:07:14,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:07:14,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:07:14,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:07:14,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:07:14,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:07:14,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:07:14,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:07:14,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:07:14,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:07:14,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:07:14,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:07:14,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:07:14,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:07:14,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:07:14,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:07:14,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:07:14,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:07:14,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:07:14,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:07:14,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:07:14,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:07:14,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:07:14,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:07:14,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 21:07:14,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:07:14,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:07:14,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:07:14,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:07:14,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:07:14,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:07:14,132 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:07:14,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:07:14,133 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:07:14,133 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:07:14,134 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:07:14,135 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:07:14,135 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:07:14,135 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:07:14,136 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:07:14,136 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:07:14,136 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:07:14,136 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:07:14,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:07:14,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:07:14,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:07:14,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:07:14,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:07:14,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:07:14,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:07:14,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:07:14,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:07:14,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:07:14,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:07:14,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:07:14,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:07:14,141 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:07:14,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:07:14,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:07:14,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:07:14,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:07:14,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:07:14,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:07:14,143 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 [2022-11-20 21:07:14,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:07:14,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:07:14,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:07:14,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:07:14,570 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:07:14,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-20 21:07:18,376 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:07:19,186 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:07:19,187 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-20 21:07:19,250 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/data/a9f5d3aa8/c80cc74f81e3493da305d333c53a8f3b/FLAG31e258041 [2022-11-20 21:07:19,272 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/data/a9f5d3aa8/c80cc74f81e3493da305d333c53a8f3b [2022-11-20 21:07:19,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:07:19,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:07:19,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:07:19,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:07:19,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:07:19,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:07:19" (1/1) ... [2022-11-20 21:07:19,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1895ead4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:19, skipping insertion in model container [2022-11-20 21:07:19,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:07:19" (1/1) ... [2022-11-20 21:07:19,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:07:19,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:07:20,154 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 21:07:20,166 INFO L158 Benchmark]: Toolchain (without parser) took 882.73ms. Allocated memory is still 161.5MB. Free memory was 106.5MB in the beginning and 94.7MB in the end (delta: 11.8MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2022-11-20 21:07:20,167 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 61.8MB in the beginning and 61.7MB in the end (delta: 128.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:07:20,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 877.59ms. Allocated memory is still 161.5MB. Free memory was 106.5MB in the beginning and 94.7MB in the end (delta: 11.8MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2022-11-20 21:07:20,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 61.8MB in the beginning and 61.7MB in the end (delta: 128.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 877.59ms. Allocated memory is still 161.5MB. Free memory was 106.5MB in the beginning and 94.7MB in the end (delta: 11.8MB). Peak memory consumption was 31.6MB. 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 --- 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 21:07:22,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:07:22,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:07:22,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:07:22,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:07:22,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:07:22,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:07:22,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:07:22,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:07:22,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:07:22,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:07:22,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:07:22,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:07:22,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:07:22,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:07:22,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:07:22,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:07:22,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:07:22,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:07:23,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:07:23,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:07:23,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:07:23,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:07:23,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:07:23,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:07:23,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:07:23,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:07:23,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:07:23,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:07:23,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:07:23,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:07:23,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:07:23,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:07:23,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:07:23,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:07:23,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:07:23,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:07:23,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:07:23,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:07:23,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:07:23,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:07:23,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 21:07:23,102 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:07:23,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:07:23,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:07:23,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:07:23,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:07:23,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:07:23,106 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:07:23,107 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:07:23,107 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:07:23,107 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:07:23,109 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:07:23,109 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:07:23,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:07:23,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:07:23,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:07:23,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:07:23,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:07:23,112 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:07:23,112 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:07:23,112 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:07:23,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:07:23,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:07:23,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:07:23,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:07:23,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:07:23,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:07:23,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:07:23,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:07:23,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:07:23,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:07:23,116 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:07:23,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:07:23,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:07:23,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:07:23,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:07:23,118 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 [2022-11-20 21:07:23,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:07:23,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:07:23,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:07:23,586 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:07:23,587 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:07:23,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-20 21:07:27,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:07:28,086 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:07:28,086 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-20 21:07:28,160 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/data/5f3ed61b7/1bc634d4a70540e797e8a065678474a5/FLAGee3b95bc1 [2022-11-20 21:07:28,188 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/data/5f3ed61b7/1bc634d4a70540e797e8a065678474a5 [2022-11-20 21:07:28,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:07:28,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:07:28,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:07:28,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:07:28,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:07:28,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:07:28" (1/1) ... [2022-11-20 21:07:28,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283fed03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:28, skipping insertion in model container [2022-11-20 21:07:28,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:07:28" (1/1) ... [2022-11-20 21:07:28,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:07:28,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:07:32,128 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2022-11-20 21:07:32,132 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2022-11-20 21:07:32,133 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2022-11-20 21:07:32,134 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2022-11-20 21:07:32,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:07:32,238 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 21:07:32,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:07:32,805 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2022-11-20 21:07:32,806 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2022-11-20 21:07:32,807 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2022-11-20 21:07:32,808 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2022-11-20 21:07:32,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:07:32,864 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:07:33,353 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2022-11-20 21:07:33,353 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2022-11-20 21:07:33,354 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2022-11-20 21:07:33,354 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_2a8a0cf7-d258-45de-91f2-6153ef49656d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2022-11-20 21:07:33,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:07:33,828 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:07:33,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33 WrapperNode [2022-11-20 21:07:33,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:07:33,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:07:33,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:07:33,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:07:33,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:33,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,147 INFO L138 Inliner]: procedures = 467, calls = 1811, calls flagged for inlining = 217, calls inlined = 199, statements flattened = 4152 [2022-11-20 21:07:34,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:07:34,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:07:34,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:07:34,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:07:34,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,524 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:07:34,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:07:34,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:07:34,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:07:34,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (1/1) ... [2022-11-20 21:07:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:07:34,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:07:34,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:07:34,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:07:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_set_multicast [2022-11-20 21:07:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_set_multicast [2022-11-20 21:07:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 21:07:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 21:07:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_rx_kick [2022-11-20 21:07:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_rx_kick [2022-11-20 21:07:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 21:07:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 21:07:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_do_reset [2022-11-20 21:07:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_do_reset [2022-11-20 21:07:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2022-11-20 21:07:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2022-11-20 21:07:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 21:07:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 21:07:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 21:07:34,704 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 21:07:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 21:07:34,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 21:07:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 21:07:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 21:07:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_62 [2022-11-20 21:07:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_62 [2022-11-20 21:07:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2022-11-20 21:07:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2022-11-20 21:07:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-20 21:07:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-20 21:07:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_remove_one [2022-11-20 21:07:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_remove_one [2022-11-20 21:07:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 21:07:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 21:07:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_update_stats [2022-11-20 21:07:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_update_stats [2022-11-20 21:07:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 21:07:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 21:07:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 21:07:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 21:07:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 21:07:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 21:07:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-20 21:07:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-20 21:07:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 21:07:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 21:07:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 21:07:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 21:07:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 21:07:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 21:07:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 21:07:34,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 21:07:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:07:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-20 21:07:34,711 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-20 21:07:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 21:07:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 21:07:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 21:07:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 21:07:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 21:07:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 21:07:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 21:07:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_tx_timeout [2022-11-20 21:07:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_tx_timeout [2022-11-20 21:07:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 21:07:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 21:07:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 21:07:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 21:07:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 21:07:34,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 21:07:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-20 21:07:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-20 21:07:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 21:07:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 21:07:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-20 21:07:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-20 21:07:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 21:07:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 21:07:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 21:07:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 21:07:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-20 21:07:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-20 21:07:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 21:07:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 21:07:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 21:07:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 21:07:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 21:07:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 21:07:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_run_bist [2022-11-20 21:07:34,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_run_bist [2022-11-20 21:07:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:07:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 21:07:34,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 21:07:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 21:07:34,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 21:07:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-20 21:07:34,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-20 21:07:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:07:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 21:07:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 21:07:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 21:07:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure clear_rx_desc [2022-11-20 21:07:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_rx_desc [2022-11-20 21:07:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure phy_intr [2022-11-20 21:07:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_intr [2022-11-20 21:07:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 21:07:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 21:07:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 21:07:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 21:07:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-20 21:07:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-20 21:07:34,723 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 21:07:34,723 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 21:07:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 21:07:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 21:07:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-20 21:07:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-20 21:07:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure do_tx_done [2022-11-20 21:07:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure do_tx_done [2022-11-20 21:07:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2022-11-20 21:07:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2022-11-20 21:07:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 21:07:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 21:07:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 21:07:34,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 21:07:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-20 21:07:34,726 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-20 21:07:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-20 21:07:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-20 21:07:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:07:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:07:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_stop [2022-11-20 21:07:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_stop [2022-11-20 21:07:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 21:07:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure kick_tx [2022-11-20 21:07:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_tx [2022-11-20 21:07:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 21:07:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 21:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rx_info [2022-11-20 21:07:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rx_info [2022-11-20 21:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 21:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 21:07:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 21:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 21:07:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 21:07:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-20 21:07:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-20 21:07:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-20 21:07:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-20 21:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-20 21:07:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-20 21:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 21:07:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 21:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-20 21:07:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-20 21:07:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-20 21:07:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-20 21:07:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 21:07:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 21:07:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 21:07:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 21:07:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-20 21:07:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-20 21:07:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-20 21:07:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-20 21:07:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2022-11-20 21:07:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2022-11-20 21:07:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-20 21:07:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-20 21:07:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:07:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2022-11-20 21:07:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2022-11-20 21:07:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 21:07:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 21:07:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 21:07:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 21:07:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 21:07:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 21:07:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-20 21:07:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-20 21:07:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 21:07:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 21:07:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 21:07:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 21:07:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-20 21:07:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-20 21:07:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-20 21:07:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-20 21:07:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 21:07:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 21:07:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 21:07:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 21:07:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_ns83820 [2022-11-20 21:07:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_ns83820 [2022-11-20 21:07:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2022-11-20 21:07:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2022-11-20 21:07:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 21:07:34,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 21:07:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure build_rx_desc [2022-11-20 21:07:34,740 INFO L138 BoogieDeclarations]: Found implementation of procedure build_rx_desc [2022-11-20 21:07:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 21:07:34,740 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 21:07:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 21:07:34,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 21:07:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 21:07:34,741 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 21:07:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_misc_lock_of_ns83820 [2022-11-20 21:07:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_misc_lock_of_ns83820 [2022-11-20 21:07:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-20 21:07:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-20 21:07:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_open [2022-11-20 21:07:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_open [2022-11-20 21:07:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 21:07:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 21:07:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure rx_irq [2022-11-20 21:07:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_irq [2022-11-20 21:07:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_disable_interrupts [2022-11-20 21:07:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_disable_interrupts [2022-11-20 21:07:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure kick_rx [2022-11-20 21:07:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_rx [2022-11-20 21:07:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 21:07:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 21:07:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-20 21:07:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-20 21:07:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure rx_refill [2022-11-20 21:07:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_refill [2022-11-20 21:07:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 21:07:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 21:07:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rx_info [2022-11-20 21:07:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rx_info [2022-11-20 21:07:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2022-11-20 21:07:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2022-11-20 21:07:35,867 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:07:35,880 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:07:36,103 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 21:08:02,908 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 21:08:03,508 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:08:03,527 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:08:03,527 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 21:08:03,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:08:03 BoogieIcfgContainer [2022-11-20 21:08:03,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:08:03,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:08:03,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:08:03,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:08:03,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:07:28" (1/3) ... [2022-11-20 21:08:03,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae7803b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:08:03, skipping insertion in model container [2022-11-20 21:08:03,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:33" (2/3) ... [2022-11-20 21:08:03,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae7803b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:08:03, skipping insertion in model container [2022-11-20 21:08:03,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:08:03" (3/3) ... [2022-11-20 21:08:03,553 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-20 21:08:03,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:08:03,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 21:08:03,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:08:03,704 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;@7c6d530a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:08:03,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 21:08:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 1736 states, 1122 states have (on average 1.2210338680926915) internal successors, (1370), 1154 states have internal predecessors, (1370), 508 states have call successors, (508), 104 states have call predecessors, (508), 103 states have return successors, (503), 499 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-20 21:08:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 21:08:03,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:03,734 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:03,735 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 21:08:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:03,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1152342867, now seen corresponding path program 1 times [2022-11-20 21:08:03,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:03,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644859692] [2022-11-20 21:08:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:03,758 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 21:08:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:03,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:03,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:05,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:05,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-20 21:08:05,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:05,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:05,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644859692] [2022-11-20 21:08:05,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644859692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:05,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:08:05,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:08:05,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071777009] [2022-11-20 21:08:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:05,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:05,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:05,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:08:05,308 INFO L87 Difference]: Start difference. First operand has 1736 states, 1122 states have (on average 1.2210338680926915) internal successors, (1370), 1154 states have internal predecessors, (1370), 508 states have call successors, (508), 104 states have call predecessors, (508), 103 states have return successors, (503), 499 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 21:08:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:06,133 INFO L93 Difference]: Finished difference Result 5094 states and 7169 transitions. [2022-11-20 21:08:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:06,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2022-11-20 21:08:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:06,197 INFO L225 Difference]: With dead ends: 5094 [2022-11-20 21:08:06,197 INFO L226 Difference]: Without dead ends: 3367 [2022-11-20 21:08:06,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 21:08:06,229 INFO L413 NwaCegarLoop]: 2854 mSDtfsCounter, 2271 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:06,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 5181 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:08:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2022-11-20 21:08:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3363. [2022-11-20 21:08:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 2185 states have (on average 1.2123569794050344) internal successors, (2649), 2247 states have internal predecessors, (2649), 972 states have call successors, (972), 204 states have call predecessors, (972), 203 states have return successors, (969), 961 states have call predecessors, (969), 969 states have call successors, (969) [2022-11-20 21:08:06,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4590 transitions. [2022-11-20 21:08:06,755 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4590 transitions. Word has length 101 [2022-11-20 21:08:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:06,756 INFO L495 AbstractCegarLoop]: Abstraction has 3363 states and 4590 transitions. [2022-11-20 21:08:06,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 21:08:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4590 transitions. [2022-11-20 21:08:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 21:08:06,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:06,775 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:06,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:07,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:07,001 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 21:08:07,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:07,001 INFO L85 PathProgramCache]: Analyzing trace with hash 382484782, now seen corresponding path program 1 times [2022-11-20 21:08:07,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:07,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978281808] [2022-11-20 21:08:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:07,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:07,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:07,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:07,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:08,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:08,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-20 21:08:08,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:08,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:08,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978281808] [2022-11-20 21:08:08,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978281808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:08,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:08:08,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:08:08,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765403032] [2022-11-20 21:08:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:08,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:08,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:08,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:08,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:08:08,394 INFO L87 Difference]: Start difference. First operand 3363 states and 4590 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 21:08:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:09,417 INFO L93 Difference]: Finished difference Result 9475 states and 12902 transitions. [2022-11-20 21:08:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:09,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 114 [2022-11-20 21:08:09,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:09,476 INFO L225 Difference]: With dead ends: 9475 [2022-11-20 21:08:09,477 INFO L226 Difference]: Without dead ends: 6131 [2022-11-20 21:08:09,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 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 21:08:09,497 INFO L413 NwaCegarLoop]: 2782 mSDtfsCounter, 1925 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 5059 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:09,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1925 Valid, 5059 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 21:08:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2022-11-20 21:08:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6094. [2022-11-20 21:08:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 3937 states have (on average 1.208026416052832) internal successors, (4756), 4053 states have internal predecessors, (4756), 1761 states have call successors, (1761), 394 states have call predecessors, (1761), 393 states have return successors, (1764), 1740 states have call predecessors, (1764), 1758 states have call successors, (1764) [2022-11-20 21:08:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 8281 transitions. [2022-11-20 21:08:10,062 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 8281 transitions. Word has length 114 [2022-11-20 21:08:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:10,063 INFO L495 AbstractCegarLoop]: Abstraction has 6094 states and 8281 transitions. [2022-11-20 21:08:10,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 21:08:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 8281 transitions. [2022-11-20 21:08:10,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 21:08:10,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:10,069 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:10,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:10,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:10,292 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 21:08:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1109694244, now seen corresponding path program 1 times [2022-11-20 21:08:10,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:10,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088915797] [2022-11-20 21:08:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:10,295 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 21:08:10,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:10,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:10,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:11,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:11,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-20 21:08:11,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:11,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:11,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088915797] [2022-11-20 21:08:11,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088915797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:11,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:08:11,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:08:11,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385439458] [2022-11-20 21:08:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:11,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:08:11,746 INFO L87 Difference]: Start difference. First operand 6094 states and 8281 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 21:08:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:12,737 INFO L93 Difference]: Finished difference Result 11944 states and 16207 transitions. [2022-11-20 21:08:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:12,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2022-11-20 21:08:12,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:12,787 INFO L225 Difference]: With dead ends: 11944 [2022-11-20 21:08:12,788 INFO L226 Difference]: Without dead ends: 5869 [2022-11-20 21:08:12,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 21:08:12,824 INFO L413 NwaCegarLoop]: 3208 mSDtfsCounter, 1672 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 5499 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:12,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 5499 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 21:08:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5869 states. [2022-11-20 21:08:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5869 to 5841. [2022-11-20 21:08:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5841 states, 3762 states have (on average 1.203083466241361) internal successors, (4526), 3883 states have internal predecessors, (4526), 1670 states have call successors, (1670), 407 states have call predecessors, (1670), 406 states have return successors, (1670), 1649 states have call predecessors, (1670), 1667 states have call successors, (1670) [2022-11-20 21:08:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 7866 transitions. [2022-11-20 21:08:13,421 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 7866 transitions. Word has length 115 [2022-11-20 21:08:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:13,422 INFO L495 AbstractCegarLoop]: Abstraction has 5841 states and 7866 transitions. [2022-11-20 21:08:13,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 21:08:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 7866 transitions. [2022-11-20 21:08:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 21:08:13,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:13,431 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 21:08:13,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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)] Ended with exit code 0 [2022-11-20 21:08:13,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:13,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:08:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 112371583, now seen corresponding path program 1 times [2022-11-20 21:08:13,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:13,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988208856] [2022-11-20 21:08:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:13,646 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 21:08:13,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:13,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:13,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:14,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:14,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-20 21:08:14,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:14,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:14,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988208856] [2022-11-20 21:08:14,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988208856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:14,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:08:14,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:08:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286477598] [2022-11-20 21:08:14,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:14,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:14,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:14,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:08:14,996 INFO L87 Difference]: Start difference. First operand 5841 states and 7866 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 21:08:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:16,006 INFO L93 Difference]: Finished difference Result 16035 states and 21611 transitions. [2022-11-20 21:08:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:16,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 119 [2022-11-20 21:08:16,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:16,097 INFO L225 Difference]: With dead ends: 16035 [2022-11-20 21:08:16,098 INFO L226 Difference]: Without dead ends: 10213 [2022-11-20 21:08:16,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 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 21:08:16,128 INFO L413 NwaCegarLoop]: 2824 mSDtfsCounter, 2203 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:16,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2203 Valid, 5063 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:08:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10213 states. [2022-11-20 21:08:16,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10213 to 10174. [2022-11-20 21:08:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10174 states, 6564 states have (on average 1.20551492992078) internal successors, (7913), 6784 states have internal predecessors, (7913), 2887 states have call successors, (2887), 724 states have call predecessors, (2887), 720 states have return successors, (2912), 2834 states have call predecessors, (2912), 2884 states have call successors, (2912) [2022-11-20 21:08:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10174 states to 10174 states and 13712 transitions. [2022-11-20 21:08:17,164 INFO L78 Accepts]: Start accepts. Automaton has 10174 states and 13712 transitions. Word has length 119 [2022-11-20 21:08:17,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:17,165 INFO L495 AbstractCegarLoop]: Abstraction has 10174 states and 13712 transitions. [2022-11-20 21:08:17,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 21:08:17,166 INFO L276 IsEmpty]: Start isEmpty. Operand 10174 states and 13712 transitions. [2022-11-20 21:08:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 21:08:17,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:17,169 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 21:08:17,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:17,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:17,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 21:08:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash 404447685, now seen corresponding path program 1 times [2022-11-20 21:08:17,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:17,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101133127] [2022-11-20 21:08:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:17,398 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 21:08:17,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:17,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:17,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:18,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:18,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-20 21:08:18,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:18,826 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:18,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101133127] [2022-11-20 21:08:18,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101133127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:18,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:08:18,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:08:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686948177] [2022-11-20 21:08:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:18,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:18,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:18,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:08:18,829 INFO L87 Difference]: Start difference. First operand 10174 states and 13712 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 21:08:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:20,300 INFO L93 Difference]: Finished difference Result 27829 states and 37377 transitions. [2022-11-20 21:08:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:20,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2022-11-20 21:08:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:20,408 INFO L225 Difference]: With dead ends: 27829 [2022-11-20 21:08:20,408 INFO L226 Difference]: Without dead ends: 17674 [2022-11-20 21:08:20,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 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 21:08:20,457 INFO L413 NwaCegarLoop]: 3247 mSDtfsCounter, 2161 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:20,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 5560 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:08:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17674 states. [2022-11-20 21:08:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17674 to 17633. [2022-11-20 21:08:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17633 states, 11469 states have (on average 1.1994070973929725) internal successors, (13756), 11825 states have internal predecessors, (13756), 4896 states have call successors, (4896), 1276 states have call predecessors, (4896), 1265 states have return successors, (4952), 4778 states have call predecessors, (4952), 4893 states have call successors, (4952) [2022-11-20 21:08:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17633 states to 17633 states and 23604 transitions. [2022-11-20 21:08:22,030 INFO L78 Accepts]: Start accepts. Automaton has 17633 states and 23604 transitions. Word has length 121 [2022-11-20 21:08:22,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:22,030 INFO L495 AbstractCegarLoop]: Abstraction has 17633 states and 23604 transitions. [2022-11-20 21:08:22,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 21:08:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 17633 states and 23604 transitions. [2022-11-20 21:08:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 21:08:22,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:22,034 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 21:08:22,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:22,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:22,260 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 21:08:22,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1412768346, now seen corresponding path program 1 times [2022-11-20 21:08:22,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:22,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248512166] [2022-11-20 21:08:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:22,263 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 21:08:22,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:22,265 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:22,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:23,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:23,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-20 21:08:23,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:23,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:23,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248512166] [2022-11-20 21:08:23,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248512166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:23,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:08:23,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:08:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205183532] [2022-11-20 21:08:23,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:23,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:23,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:23,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:08:23,769 INFO L87 Difference]: Start difference. First operand 17633 states and 23604 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:08:26,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:26,755 INFO L93 Difference]: Finished difference Result 52080 states and 69761 transitions. [2022-11-20 21:08:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:26,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 153 [2022-11-20 21:08:26,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:26,956 INFO L225 Difference]: With dead ends: 52080 [2022-11-20 21:08:26,956 INFO L226 Difference]: Without dead ends: 34512 [2022-11-20 21:08:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 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 21:08:27,031 INFO L413 NwaCegarLoop]: 3297 mSDtfsCounter, 2278 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:27,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 5624 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:08:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34512 states. [2022-11-20 21:08:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34512 to 34488. [2022-11-20 21:08:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34488 states, 22428 states have (on average 1.200151596219012) internal successors, (26917), 23098 states have internal predecessors, (26917), 9576 states have call successors, (9576), 2502 states have call predecessors, (9576), 2481 states have return successors, (9691), 9381 states have call predecessors, (9691), 9573 states have call successors, (9691) [2022-11-20 21:08:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34488 states to 34488 states and 46184 transitions. [2022-11-20 21:08:30,792 INFO L78 Accepts]: Start accepts. Automaton has 34488 states and 46184 transitions. Word has length 153 [2022-11-20 21:08:30,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:30,792 INFO L495 AbstractCegarLoop]: Abstraction has 34488 states and 46184 transitions. [2022-11-20 21:08:30,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:08:30,793 INFO L276 IsEmpty]: Start isEmpty. Operand 34488 states and 46184 transitions. [2022-11-20 21:08:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 21:08:30,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:30,796 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 21:08:30,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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)] Ended with exit code 0 [2022-11-20 21:08:31,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:31,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:08:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:31,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1835470172, now seen corresponding path program 1 times [2022-11-20 21:08:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:31,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480897787] [2022-11-20 21:08:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:31,024 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 21:08:31,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:31,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:31,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:32,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:32,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-20 21:08:33,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:33,171 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:33,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480897787] [2022-11-20 21:08:33,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480897787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:33,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:08:33,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:08:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415946238] [2022-11-20 21:08:33,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:08:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:08:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:08:33,174 INFO L87 Difference]: Start difference. First operand 34488 states and 46184 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 21:08:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:36,406 INFO L93 Difference]: Finished difference Result 34494 states and 46189 transitions. [2022-11-20 21:08:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:08:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 153 [2022-11-20 21:08:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:36,718 INFO L225 Difference]: With dead ends: 34494 [2022-11-20 21:08:36,719 INFO L226 Difference]: Without dead ends: 34492 [2022-11-20 21:08:36,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:36,735 INFO L413 NwaCegarLoop]: 2350 mSDtfsCounter, 2282 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 7036 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:36,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2283 Valid, 7036 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:08:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34492 states. [2022-11-20 21:08:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34492 to 34492. [2022-11-20 21:08:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34492 states, 22431 states have (on average 1.200124827248005) internal successors, (26920), 23101 states have internal predecessors, (26920), 9576 states have call successors, (9576), 2503 states have call predecessors, (9576), 2482 states have return successors, (9691), 9381 states have call predecessors, (9691), 9573 states have call successors, (9691) [2022-11-20 21:08:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34492 states to 34492 states and 46187 transitions. [2022-11-20 21:08:39,733 INFO L78 Accepts]: Start accepts. Automaton has 34492 states and 46187 transitions. Word has length 153 [2022-11-20 21:08:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:39,734 INFO L495 AbstractCegarLoop]: Abstraction has 34492 states and 46187 transitions. [2022-11-20 21:08:39,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 21:08:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 34492 states and 46187 transitions. [2022-11-20 21:08:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-20 21:08:39,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:39,738 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 21:08:39,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:39,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:39,951 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 21:08:39,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:39,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1232815681, now seen corresponding path program 1 times [2022-11-20 21:08:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:39,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668765079] [2022-11-20 21:08:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:39,954 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 21:08:39,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:39,956 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:40,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:41,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:41,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-20 21:08:42,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-20 21:08:42,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:42,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668765079] [2022-11-20 21:08:42,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668765079] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:08:42,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:08:42,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:08:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935743319] [2022-11-20 21:08:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:42,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:08:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:08:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:42,651 INFO L87 Difference]: Start difference. First operand 34492 states and 46187 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 21:08:46,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:46,198 INFO L93 Difference]: Finished difference Result 34498 states and 46192 transitions. [2022-11-20 21:08:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:08:46,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2022-11-20 21:08:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:46,352 INFO L225 Difference]: With dead ends: 34498 [2022-11-20 21:08:46,352 INFO L226 Difference]: Without dead ends: 34496 [2022-11-20 21:08:46,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:08:46,371 INFO L413 NwaCegarLoop]: 2353 mSDtfsCounter, 2296 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 7038 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:46,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 7038 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:08:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34496 states. [2022-11-20 21:08:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34496 to 34496. [2022-11-20 21:08:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34496 states, 22434 states have (on average 1.200098065436391) internal successors, (26923), 23104 states have internal predecessors, (26923), 9576 states have call successors, (9576), 2504 states have call predecessors, (9576), 2483 states have return successors, (9691), 9381 states have call predecessors, (9691), 9573 states have call successors, (9691) [2022-11-20 21:08:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34496 states to 34496 states and 46190 transitions. [2022-11-20 21:08:50,203 INFO L78 Accepts]: Start accepts. Automaton has 34496 states and 46190 transitions. Word has length 158 [2022-11-20 21:08:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:50,204 INFO L495 AbstractCegarLoop]: Abstraction has 34496 states and 46190 transitions. [2022-11-20 21:08:50,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 21:08:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 34496 states and 46190 transitions. [2022-11-20 21:08:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-20 21:08:50,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:50,208 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 21:08:50,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:50,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:50,423 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 21:08:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -265491396, now seen corresponding path program 1 times [2022-11-20 21:08:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:50,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600509682] [2022-11-20 21:08:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:50,426 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 21:08:50,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:50,428 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:50,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:08:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:51,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:51,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 21:08:52,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 21:08:53,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:53,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600509682] [2022-11-20 21:08:53,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600509682] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:08:53,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:08:53,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:08:53,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309844515] [2022-11-20 21:08:53,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:53,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:08:53,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:53,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:08:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:53,186 INFO L87 Difference]: Start difference. First operand 34496 states and 46190 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 21:08:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:56,284 INFO L93 Difference]: Finished difference Result 34502 states and 46195 transitions. [2022-11-20 21:08:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:08:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-11-20 21:08:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:56,445 INFO L225 Difference]: With dead ends: 34502 [2022-11-20 21:08:56,446 INFO L226 Difference]: Without dead ends: 34500 [2022-11-20 21:08:56,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:08:56,461 INFO L413 NwaCegarLoop]: 2353 mSDtfsCounter, 2296 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 7038 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:56,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 7038 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:08:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34500 states. [2022-11-20 21:09:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34500 to 34500. [2022-11-20 21:09:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34500 states, 22437 states have (on average 1.2000713107812988) internal successors, (26926), 23107 states have internal predecessors, (26926), 9576 states have call successors, (9576), 2505 states have call predecessors, (9576), 2484 states have return successors, (9691), 9381 states have call predecessors, (9691), 9573 states have call successors, (9691) [2022-11-20 21:09:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34500 states to 34500 states and 46193 transitions. [2022-11-20 21:09:00,293 INFO L78 Accepts]: Start accepts. Automaton has 34500 states and 46193 transitions. Word has length 163 [2022-11-20 21:09:00,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:00,294 INFO L495 AbstractCegarLoop]: Abstraction has 34500 states and 46193 transitions. [2022-11-20 21:09:00,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 21:09:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 34500 states and 46193 transitions. [2022-11-20 21:09:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-20 21:09:00,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:00,299 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 21:09:00,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:09:00,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:09:00,515 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 21:09:00,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash 203940577, now seen corresponding path program 1 times [2022-11-20 21:09:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:09:00,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271600937] [2022-11-20 21:09:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:00,518 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 21:09:00,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:09:00,520 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:09:00,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:09:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:01,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:01,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 21:09:02,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 21:09:03,094 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:09:03,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271600937] [2022-11-20 21:09:03,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271600937] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:09:03,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:09:03,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:09:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397599719] [2022-11-20 21:09:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:03,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:09:03,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:09:03,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:09:03,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:09:03,098 INFO L87 Difference]: Start difference. First operand 34500 states and 46193 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 21:09:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:06,990 INFO L93 Difference]: Finished difference Result 34506 states and 46198 transitions. [2022-11-20 21:09:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:09:06,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2022-11-20 21:09:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:07,172 INFO L225 Difference]: With dead ends: 34506 [2022-11-20 21:09:07,173 INFO L226 Difference]: Without dead ends: 34504 [2022-11-20 21:09:07,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:09:07,192 INFO L413 NwaCegarLoop]: 2353 mSDtfsCounter, 2296 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 7038 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:07,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 7038 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:09:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34504 states. [2022-11-20 21:09:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34504 to 34504. [2022-11-20 21:09:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34504 states, 22440 states have (on average 1.2000445632798573) internal successors, (26929), 23110 states have internal predecessors, (26929), 9576 states have call successors, (9576), 2506 states have call predecessors, (9576), 2485 states have return successors, (9691), 9381 states have call predecessors, (9691), 9573 states have call successors, (9691) [2022-11-20 21:09:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34504 states to 34504 states and 46196 transitions. [2022-11-20 21:09:10,696 INFO L78 Accepts]: Start accepts. Automaton has 34504 states and 46196 transitions. Word has length 168 [2022-11-20 21:09:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:10,696 INFO L495 AbstractCegarLoop]: Abstraction has 34504 states and 46196 transitions. [2022-11-20 21:09:10,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 21:09:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 34504 states and 46196 transitions. [2022-11-20 21:09:10,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 21:09:10,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:10,701 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 21:09:10,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:09:10,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:09:10,915 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 21:09:10,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:10,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1044603676, now seen corresponding path program 1 times [2022-11-20 21:09:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:09:10,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689158248] [2022-11-20 21:09:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:10,917 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 21:09:10,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:09:10,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:09:10,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a8a0cf7-d258-45de-91f2-6153ef49656d/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 21:09:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:11,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:11,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-20 21:09:12,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-20 21:09:13,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:09:13,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689158248] [2022-11-20 21:09:13,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689158248] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 21:09:13,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:09:13,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 21:09:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630258607] [2022-11-20 21:09:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:13,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:09:13,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:09:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:09:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:09:13,394 INFO L87 Difference]: Start difference. First operand 34504 states and 46196 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)