./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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_8ab82d38-90cf-4a82-9484-0dc462750a53/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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- 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 20:36:56,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:36:56,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:36:56,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:36:56,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:36:56,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:36:56,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:36:56,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:36:56,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:36:56,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:36:56,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:36:56,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:36:56,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:36:56,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:36:56,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:36:56,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:36:56,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:36:56,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:36:56,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:36:56,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:36:56,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:36:56,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:36:56,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:36:56,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:36:56,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:36:56,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:36:56,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:36:56,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:36:56,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:36:56,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:36:56,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:36:56,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:36:56,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:36:56,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:36:56,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:36:56,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:36:56,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:36:56,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:36:56,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:36:56,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:36:56,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:36:56,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:36:56,549 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:36:56,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:36:56,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:36:56,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:36:56,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:36:56,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:36:56,551 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:36:56,551 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:36:56,552 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:36:56,552 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:36:56,553 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:36:56,553 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:36:56,553 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:36:56,553 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:36:56,554 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:36:56,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:36:56,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:36:56,554 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:36:56,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:36:56,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:36:56,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:36:56,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:36:56,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:36:56,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:36:56,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:36:56,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:36:56,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:36:56,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:36:56,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:36:56,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:36:56,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:36:56,559 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:36:56,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:36:56,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:36:56,559 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:36:56,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:36:56,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:36:56,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:36:56,561 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_8ab82d38-90cf-4a82-9484-0dc462750a53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2022-11-20 20:36:56,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:36:56,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:36:56,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:36:56,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:36:56,908 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:36:56,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-20 20:36:59,952 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:37:00,552 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:37:00,553 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-20 20:37:00,599 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/data/552feca91/79c550ac252f4832b4c34f6395f147a6/FLAG15dc498d3 [2022-11-20 20:37:00,617 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/data/552feca91/79c550ac252f4832b4c34f6395f147a6 [2022-11-20 20:37:00,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:37:00,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:37:00,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:37:00,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:37:00,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:37:00,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:37:00" (1/1) ... [2022-11-20 20:37:00,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7b60b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:00, skipping insertion in model container [2022-11-20 20:37:00,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:37:00" (1/1) ... [2022-11-20 20:37:00,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:37:00,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:37:01,362 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 20:37:01,372 INFO L158 Benchmark]: Toolchain (without parser) took 747.49ms. Allocated memory is still 180.4MB. Free memory was 137.1MB in the beginning and 77.8MB in the end (delta: 59.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-20 20:37:01,373 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:37:01,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 744.17ms. Allocated memory is still 180.4MB. Free memory was 137.1MB in the beginning and 77.8MB in the end (delta: 59.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-20 20:37:01,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 744.17ms. Allocated memory is still 180.4MB. Free memory was 137.1MB in the beginning and 77.8MB in the end (delta: 59.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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_8ab82d38-90cf-4a82-9484-0dc462750a53/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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- 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 20:37:03,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:37:03,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:37:03,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:37:03,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:37:03,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:37:03,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:37:03,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:37:03,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:37:03,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:37:03,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:37:03,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:37:03,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:37:03,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:37:03,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:37:03,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:37:03,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:37:03,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:37:03,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:37:03,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:37:03,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:37:03,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:37:03,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:37:03,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:37:03,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:37:03,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:37:03,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:37:03,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:37:03,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:37:03,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:37:03,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:37:03,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:37:03,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:37:03,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:37:03,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:37:03,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:37:03,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:37:03,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:37:03,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:37:03,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:37:03,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:37:03,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 20:37:03,771 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:37:03,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:37:03,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:37:03,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:37:03,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:37:03,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:37:03,773 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:37:03,773 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:37:03,773 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:37:03,774 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:37:03,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:37:03,774 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:37:03,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:37:03,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:37:03,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:37:03,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:37:03,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:37:03,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:37:03,776 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:37:03,776 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:37:03,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:37:03,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:37:03,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:37:03,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:37:03,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:37:03,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:37:03,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:37:03,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:37:03,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:37:03,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:37:03,781 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:37:03,781 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:37:03,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:37:03,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:37:03,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:37:03,782 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_8ab82d38-90cf-4a82-9484-0dc462750a53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2022-11-20 20:37:04,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:37:04,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:37:04,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:37:04,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:37:04,193 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:37:04,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-20 20:37:07,389 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:37:08,131 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:37:08,132 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-20 20:37:08,174 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/data/5a0349f40/796e0fe9325447fabc7f17823e6d8481/FLAG4957506dd [2022-11-20 20:37:08,191 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/data/5a0349f40/796e0fe9325447fabc7f17823e6d8481 [2022-11-20 20:37:08,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:37:08,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:37:08,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:37:08,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:37:08,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:37:08,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:37:08" (1/1) ... [2022-11-20 20:37:08,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba00e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:08, skipping insertion in model container [2022-11-20 20:37:08,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:37:08" (1/1) ... [2022-11-20 20:37:08,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:37:08,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:37:11,068 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-20 20:37:11,072 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-20 20:37:11,072 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-20 20:37:11,073 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-20 20:37:11,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:37:11,129 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 20:37:11,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:37:11,653 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-20 20:37:11,654 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-20 20:37:11,654 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-20 20:37:11,655 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-20 20:37:11,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:37:11,676 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:37:12,056 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-20 20:37:12,056 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-20 20:37:12,057 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-20 20:37:12,057 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_8ab82d38-90cf-4a82-9484-0dc462750a53/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-20 20:37:12,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:37:12,265 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:37:12,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12 WrapperNode [2022-11-20 20:37:12,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:37:12,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:37:12,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:37:12,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:37:12,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,497 INFO L138 Inliner]: procedures = 426, calls = 1674, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 3951 [2022-11-20 20:37:12,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:37:12,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:37:12,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:37:12,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:37:12,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,758 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:37:12,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:37:12,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:37:12,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:37:12,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (1/1) ... [2022-11-20 20:37:12,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:37:12,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:12,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:37:12,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:37:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 20:37:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 20:37:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 20:37:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 20:37:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-20 20:37:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-20 20:37:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 20:37:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 20:37:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:37:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:37:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 20:37:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 20:37:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 20:37:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 20:37:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-20 20:37:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-20 20:37:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-20 20:37:12,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-20 20:37:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-20 20:37:12,900 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-20 20:37:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-20 20:37:12,900 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-20 20:37:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_poll [2022-11-20 20:37:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_poll [2022-11-20 20:37:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 20:37:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 20:37:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 20:37:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 20:37:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 20:37:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 20:37:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-20 20:37:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-20 20:37:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 20:37:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 20:37:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 20:37:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 20:37:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-20 20:37:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-20 20:37:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:37:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_stop [2022-11-20 20:37:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_stop [2022-11-20 20:37:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:37:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 20:37:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 20:37:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 20:37:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 20:37:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 20:37:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 20:37:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 20:37:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 20:37:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_set_filter_mode [2022-11-20 20:37:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_set_filter_mode [2022-11-20 20:37:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2022-11-20 20:37:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2022-11-20 20:37:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2022-11-20 20:37:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2022-11-20 20:37:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 20:37:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 20:37:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:37:12,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:37:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-20 20:37:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-20 20:37:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 20:37:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 20:37:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 20:37:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 20:37:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 20:37:12,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 20:37:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 20:37:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 20:37:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2022-11-20 20:37:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2022-11-20 20:37:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 20:37:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 20:37:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reset_prepare [2022-11-20 20:37:12,907 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reset_prepare [2022-11-20 20:37:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:37:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 20:37:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 20:37:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 20:37:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 20:37:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:37:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2022-11-20 20:37:12,908 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2022-11-20 20:37:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 20:37:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 20:37:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 20:37:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 20:37:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:37:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 20:37:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 20:37:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:37:12,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:37:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 20:37:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 20:37:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 20:37:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 20:37:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 20:37:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 20:37:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 20:37:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 20:37:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 20:37:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 20:37:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-20 20:37:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-20 20:37:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:37:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:37:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 20:37:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reuse_skb [2022-11-20 20:37:12,912 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reuse_skb [2022-11-20 20:37:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_open [2022-11-20 20:37:12,912 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_open [2022-11-20 20:37:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 20:37:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 20:37:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:37:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 20:37:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:37:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 20:37:12,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 20:37:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 20:37:12,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 20:37:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-20 20:37:12,913 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-20 20:37:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_uli526x_board_info [2022-11-20 20:37:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_uli526x_board_info [2022-11-20 20:37:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-20 20:37:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-20 20:37:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 20:37:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 20:37:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-20 20:37:12,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-20 20:37:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 20:37:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 20:37:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-20 20:37:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-20 20:37:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2022-11-20 20:37:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2022-11-20 20:37:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2022-11-20 20:37:12,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2022-11-20 20:37:12,915 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 20:37:12,916 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 20:37:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:37:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 20:37:12,916 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 20:37:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:37:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-20 20:37:12,916 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-20 20:37:12,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 20:37:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 20:37:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 20:37:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 20:37:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:37:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 20:37:12,917 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 20:37:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 20:37:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 20:37:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_resume [2022-11-20 20:37:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_resume [2022-11-20 20:37:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 20:37:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 20:37:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_interrupt [2022-11-20 20:37:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_interrupt [2022-11-20 20:37:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2022-11-20 20:37:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2022-11-20 20:37:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_remove_one [2022-11-20 20:37:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_remove_one [2022-11-20 20:37:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2022-11-20 20:37:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2022-11-20 20:37:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 20:37:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 20:37:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 20:37:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 20:37:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 20:37:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 20:37:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2022-11-20 20:37:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2022-11-20 20:37:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_free_rxbuffer [2022-11-20 20:37:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_free_rxbuffer [2022-11-20 20:37:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 20:37:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 20:37:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 20:37:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 20:37:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-20 20:37:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-20 20:37:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_init [2022-11-20 20:37:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_init [2022-11-20 20:37:12,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 20:37:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 20:37:13,764 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:37:13,771 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:37:22,634 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 20:37:55,283 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 20:37:55,342 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:37:55,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:37:55,358 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:37:55,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:37:55 BoogieIcfgContainer [2022-11-20 20:37:55,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:37:55,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:37:55,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:37:55,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:37:55,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:37:08" (1/3) ... [2022-11-20 20:37:55,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c97cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:37:55, skipping insertion in model container [2022-11-20 20:37:55,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:12" (2/3) ... [2022-11-20 20:37:55,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c97cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:37:55, skipping insertion in model container [2022-11-20 20:37:55,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:37:55" (3/3) ... [2022-11-20 20:37:55,370 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-20 20:37:55,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:37:55,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 20:37:55,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:37:55,535 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;@486d4fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:37:55,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 20:37:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 1481 states, 1010 states have (on average 1.2821782178217822) internal successors, (1295), 1033 states have internal predecessors, (1295), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) [2022-11-20 20:37:55,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 20:37:55,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:55,582 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:55,583 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 20:37:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1950832770, now seen corresponding path program 1 times [2022-11-20 20:37:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:37:55,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163104226] [2022-11-20 20:37:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:55,615 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 20:37:55,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:37:55,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:37:55,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:37:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:56,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:37:56,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-20 20:37:56,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:37:56,931 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:37:56,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163104226] [2022-11-20 20:37:56,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163104226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:56,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:56,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:56,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818326645] [2022-11-20 20:37:56,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:56,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:56,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:37:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:57,004 INFO L87 Difference]: Start difference. First operand has 1481 states, 1010 states have (on average 1.2821782178217822) internal successors, (1295), 1033 states have internal predecessors, (1295), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:37:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:57,585 INFO L93 Difference]: Finished difference Result 4290 states and 6098 transitions. [2022-11-20 20:37:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:57,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 127 [2022-11-20 20:37:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:57,631 INFO L225 Difference]: With dead ends: 4290 [2022-11-20 20:37:57,633 INFO L226 Difference]: Without dead ends: 2822 [2022-11-20 20:37:57,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 20:37:57,650 INFO L413 NwaCegarLoop]: 2413 mSDtfsCounter, 1922 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:57,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 4401 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:37:57,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-11-20 20:37:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2818. [2022-11-20 20:37:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 1937 states have (on average 1.2741352607124419) internal successors, (2468), 1982 states have internal predecessors, (2468), 726 states have call successors, (726), 153 states have call predecessors, (726), 152 states have return successors, (722), 710 states have call predecessors, (722), 722 states have call successors, (722) [2022-11-20 20:37:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 3916 transitions. [2022-11-20 20:37:57,977 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 3916 transitions. Word has length 127 [2022-11-20 20:37:57,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:57,979 INFO L495 AbstractCegarLoop]: Abstraction has 2818 states and 3916 transitions. [2022-11-20 20:37:57,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:37:57,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 3916 transitions. [2022-11-20 20:37:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 20:37:57,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:57,985 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:58,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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)] Forceful destruction successful, exit code 0 [2022-11-20 20:37:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:37:58,207 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 20:37:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash 108151780, now seen corresponding path program 1 times [2022-11-20 20:37:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:37:58,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617841296] [2022-11-20 20:37:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:58,210 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 20:37:58,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:37:58,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:37:58,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:37:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:59,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:37:59,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:37:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-20 20:37:59,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:37:59,584 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:37:59,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617841296] [2022-11-20 20:37:59,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617841296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:59,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:59,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:59,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483058147] [2022-11-20 20:37:59,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:37:59,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:59,589 INFO L87 Difference]: Start difference. First operand 2818 states and 3916 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 20:38:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:00,195 INFO L93 Difference]: Finished difference Result 8308 states and 11560 transitions. [2022-11-20 20:38:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:00,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 131 [2022-11-20 20:38:00,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:00,247 INFO L225 Difference]: With dead ends: 8308 [2022-11-20 20:38:00,247 INFO L226 Difference]: Without dead ends: 5513 [2022-11-20 20:38:00,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 20:38:00,266 INFO L413 NwaCegarLoop]: 2420 mSDtfsCounter, 1972 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 4404 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 20:38:00,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1972 Valid, 4404 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:38:00,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2022-11-20 20:38:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 5483. [2022-11-20 20:38:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 3784 states have (on average 1.2772198731501057) internal successors, (4833), 3878 states have internal predecessors, (4833), 1397 states have call successors, (1397), 304 states have call predecessors, (1397), 299 states have return successors, (1399), 1356 states have call predecessors, (1399), 1393 states have call successors, (1399) [2022-11-20 20:38:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 7629 transitions. [2022-11-20 20:38:00,723 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 7629 transitions. Word has length 131 [2022-11-20 20:38:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:00,725 INFO L495 AbstractCegarLoop]: Abstraction has 5483 states and 7629 transitions. [2022-11-20 20:38:00,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 20:38:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 7629 transitions. [2022-11-20 20:38:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 20:38:00,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:00,734 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:00,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:00,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:00,960 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 20:38:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:00,960 INFO L85 PathProgramCache]: Analyzing trace with hash -330482556, now seen corresponding path program 1 times [2022-11-20 20:38:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:38:00,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985064170] [2022-11-20 20:38:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:00,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:38:00,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:38:00,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:00,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:02,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:38:02,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:38:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-20 20:38:02,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:38:02,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:38:02,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985064170] [2022-11-20 20:38:02,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985064170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:02,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:02,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:38:02,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096188975] [2022-11-20 20:38:02,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:02,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:02,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:38:02,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:02,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:02,100 INFO L87 Difference]: Start difference. First operand 5483 states and 7629 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 20:38:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:02,806 INFO L93 Difference]: Finished difference Result 15813 states and 21945 transitions. [2022-11-20 20:38:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:02,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 131 [2022-11-20 20:38:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:02,871 INFO L225 Difference]: With dead ends: 15813 [2022-11-20 20:38:02,871 INFO L226 Difference]: Without dead ends: 10353 [2022-11-20 20:38:02,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 20:38:02,901 INFO L413 NwaCegarLoop]: 2418 mSDtfsCounter, 1815 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:02,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1815 Valid, 4391 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:38:02,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10353 states. [2022-11-20 20:38:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10353 to 10319. [2022-11-20 20:38:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10319 states, 7104 states have (on average 1.271537162162162) internal successors, (9033), 7290 states have internal predecessors, (9033), 2627 states have call successors, (2627), 598 states have call predecessors, (2627), 585 states have return successors, (2637), 2538 states have call predecessors, (2637), 2623 states have call successors, (2637) [2022-11-20 20:38:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10319 states to 10319 states and 14297 transitions. [2022-11-20 20:38:03,655 INFO L78 Accepts]: Start accepts. Automaton has 10319 states and 14297 transitions. Word has length 131 [2022-11-20 20:38:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:03,656 INFO L495 AbstractCegarLoop]: Abstraction has 10319 states and 14297 transitions. [2022-11-20 20:38:03,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 20:38:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand 10319 states and 14297 transitions. [2022-11-20 20:38:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-20 20:38:03,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:03,660 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:03,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:38:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:03,884 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 20:38:03,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1862398768, now seen corresponding path program 1 times [2022-11-20 20:38:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:38:03,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71257298] [2022-11-20 20:38:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:03,887 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 20:38:03,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:38:03,888 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:03,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:04,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:38:04,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:38:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-20 20:38:04,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:38:04,926 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:38:04,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71257298] [2022-11-20 20:38:04,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71257298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:04,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:04,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:38:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565988609] [2022-11-20 20:38:04,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:04,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:04,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:38:04,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:04,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:04,928 INFO L87 Difference]: Start difference. First operand 10319 states and 14297 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:38:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:05,803 INFO L93 Difference]: Finished difference Result 20164 states and 27897 transitions. [2022-11-20 20:38:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:05,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 137 [2022-11-20 20:38:05,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:05,884 INFO L225 Difference]: With dead ends: 20164 [2022-11-20 20:38:05,885 INFO L226 Difference]: Without dead ends: 9868 [2022-11-20 20:38:05,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 20:38:05,933 INFO L413 NwaCegarLoop]: 2459 mSDtfsCounter, 1323 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:05,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 4435 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:38:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9868 states. [2022-11-20 20:38:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9868 to 9836. [2022-11-20 20:38:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 6916 states have (on average 1.2770387507229612) internal successors, (8832), 7089 states have internal predecessors, (8832), 2330 states have call successors, (2330), 598 states have call predecessors, (2330), 587 states have return successors, (2333), 2241 states have call predecessors, (2333), 2326 states have call successors, (2333) [2022-11-20 20:38:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 13495 transitions. [2022-11-20 20:38:06,718 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 13495 transitions. Word has length 137 [2022-11-20 20:38:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:06,720 INFO L495 AbstractCegarLoop]: Abstraction has 9836 states and 13495 transitions. [2022-11-20 20:38:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:38:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 13495 transitions. [2022-11-20 20:38:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 20:38:06,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:06,723 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:06,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:06,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:06,947 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 20:38:06,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash 976295232, now seen corresponding path program 1 times [2022-11-20 20:38:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:38:06,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584975856] [2022-11-20 20:38:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:06,949 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 20:38:06,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:38:06,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:06,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:07,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:38:07,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:38:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-20 20:38:07,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:38:07,919 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:38:07,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584975856] [2022-11-20 20:38:07,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584975856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:07,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:07,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:38:07,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348189139] [2022-11-20 20:38:07,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:07,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:07,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:38:07,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:07,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:07,921 INFO L87 Difference]: Start difference. First operand 9836 states and 13495 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (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 20:38:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:09,019 INFO L93 Difference]: Finished difference Result 25541 states and 35074 transitions. [2022-11-20 20:38:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (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 140 [2022-11-20 20:38:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:09,105 INFO L225 Difference]: With dead ends: 25541 [2022-11-20 20:38:09,106 INFO L226 Difference]: Without dead ends: 15728 [2022-11-20 20:38:09,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 20:38:09,139 INFO L413 NwaCegarLoop]: 2390 mSDtfsCounter, 1797 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:09,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 4360 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:38:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15728 states. [2022-11-20 20:38:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15728 to 15697. [2022-11-20 20:38:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15697 states, 10932 states have (on average 1.2720453713867546) internal successors, (13906), 11215 states have internal predecessors, (13906), 3802 states have call successors, (3802), 982 states have call predecessors, (3802), 960 states have return successors, (3813), 3637 states have call predecessors, (3813), 3798 states have call successors, (3813) [2022-11-20 20:38:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15697 states to 15697 states and 21521 transitions. [2022-11-20 20:38:10,220 INFO L78 Accepts]: Start accepts. Automaton has 15697 states and 21521 transitions. Word has length 140 [2022-11-20 20:38:10,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:10,220 INFO L495 AbstractCegarLoop]: Abstraction has 15697 states and 21521 transitions. [2022-11-20 20:38:10,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (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 20:38:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 15697 states and 21521 transitions. [2022-11-20 20:38:10,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 20:38:10,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:10,224 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:10,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:10,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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 20:38:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 521941118, now seen corresponding path program 1 times [2022-11-20 20:38:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:38:10,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881061027] [2022-11-20 20:38:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:10,449 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 20:38:10,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:38:10,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:10,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:11,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:38:11,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:38:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-20 20:38:11,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:38:11,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:38:11,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881061027] [2022-11-20 20:38:11,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881061027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:11,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:11,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:38:11,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126971572] [2022-11-20 20:38:11,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:11,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:11,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:38:11,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:11,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:11,511 INFO L87 Difference]: Start difference. First operand 15697 states and 21521 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 20:38:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:13,604 INFO L93 Difference]: Finished difference Result 45785 states and 62844 transitions. [2022-11-20 20:38:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 154 [2022-11-20 20:38:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:13,739 INFO L225 Difference]: With dead ends: 45785 [2022-11-20 20:38:13,739 INFO L226 Difference]: Without dead ends: 30111 [2022-11-20 20:38:13,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 152 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 20:38:13,785 INFO L413 NwaCegarLoop]: 2631 mSDtfsCounter, 1983 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:13,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 4658 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:38:13,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30111 states. [2022-11-20 20:38:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30111 to 30053. [2022-11-20 20:38:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30053 states, 20901 states have (on average 1.2726185349983254) internal successors, (26599), 21477 states have internal predecessors, (26599), 7306 states have call successors, (7306), 1886 states have call predecessors, (7306), 1843 states have return successors, (7332), 6957 states have call predecessors, (7332), 7302 states have call successors, (7332) [2022-11-20 20:38:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30053 states to 30053 states and 41237 transitions. [2022-11-20 20:38:16,235 INFO L78 Accepts]: Start accepts. Automaton has 30053 states and 41237 transitions. Word has length 154 [2022-11-20 20:38:16,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:16,235 INFO L495 AbstractCegarLoop]: Abstraction has 30053 states and 41237 transitions. [2022-11-20 20:38:16,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 20:38:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 30053 states and 41237 transitions. [2022-11-20 20:38:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-20 20:38:16,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:16,239 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:16,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:38:16,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:16,465 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 20:38:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1031807589, now seen corresponding path program 1 times [2022-11-20 20:38:16,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:38:16,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610752524] [2022-11-20 20:38:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:16,467 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 20:38:16,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:38:16,469 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:16,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:17,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:38:17,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:38:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-11-20 20:38:17,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:38:17,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:38:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610752524] [2022-11-20 20:38:17,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610752524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:17,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:17,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:38:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038019244] [2022-11-20 20:38:17,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:17,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:38:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:17,922 INFO L87 Difference]: Start difference. First operand 30053 states and 41237 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:38:21,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:21,360 INFO L93 Difference]: Finished difference Result 90001 states and 124983 transitions. [2022-11-20 20:38:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:21,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 189 [2022-11-20 20:38:21,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:21,644 INFO L225 Difference]: With dead ends: 90001 [2022-11-20 20:38:21,645 INFO L226 Difference]: Without dead ends: 60027 [2022-11-20 20:38:21,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 20:38:21,758 INFO L413 NwaCegarLoop]: 3431 mSDtfsCounter, 1971 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:21,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 5393 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:38:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60027 states. [2022-11-20 20:38:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60027 to 60001. [2022-11-20 20:38:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60001 states, 41727 states have (on average 1.2608862367292162) internal successors, (52613), 42877 states have internal predecessors, (52613), 14586 states have call successors, (14586), 3770 states have call predecessors, (14586), 3685 states have return successors, (15240), 13889 states have call predecessors, (15240), 14582 states have call successors, (15240) [2022-11-20 20:38:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60001 states to 60001 states and 82439 transitions. [2022-11-20 20:38:26,154 INFO L78 Accepts]: Start accepts. Automaton has 60001 states and 82439 transitions. Word has length 189 [2022-11-20 20:38:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:26,179 INFO L495 AbstractCegarLoop]: Abstraction has 60001 states and 82439 transitions. [2022-11-20 20:38:26,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:38:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand 60001 states and 82439 transitions. [2022-11-20 20:38:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-20 20:38:26,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:26,199 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:26,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:26,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:26,400 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 20:38:26,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:26,400 INFO L85 PathProgramCache]: Analyzing trace with hash -654372249, now seen corresponding path program 1 times [2022-11-20 20:38:26,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:38:26,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273604572] [2022-11-20 20:38:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:26,401 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 20:38:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:38:26,403 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:26,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:27,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:38:27,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:38:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-11-20 20:38:27,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:38:27,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:38:27,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273604572] [2022-11-20 20:38:27,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273604572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:27,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:38:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433679744] [2022-11-20 20:38:27,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:38:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:27,888 INFO L87 Difference]: Start difference. First operand 60001 states and 82439 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:38:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:30,104 INFO L93 Difference]: Finished difference Result 89975 states and 123078 transitions. [2022-11-20 20:38:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:30,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 189 [2022-11-20 20:38:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:30,234 INFO L225 Difference]: With dead ends: 89975 [2022-11-20 20:38:30,234 INFO L226 Difference]: Without dead ends: 30053 [2022-11-20 20:38:30,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 20:38:30,635 INFO L413 NwaCegarLoop]: 2016 mSDtfsCounter, 1958 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:30,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 2016 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:38:30,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30053 states. [2022-11-20 20:38:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30053 to 30053. [2022-11-20 20:38:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30053 states, 20901 states have (on average 1.246973829003397) internal successors, (26063), 21477 states have internal predecessors, (26063), 7306 states have call successors, (7306), 1886 states have call predecessors, (7306), 1843 states have return successors, (7332), 6957 states have call predecessors, (7332), 7302 states have call successors, (7332) [2022-11-20 20:38:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30053 states to 30053 states and 40701 transitions. [2022-11-20 20:38:33,055 INFO L78 Accepts]: Start accepts. Automaton has 30053 states and 40701 transitions. Word has length 189 [2022-11-20 20:38:33,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:38:33,056 INFO L495 AbstractCegarLoop]: Abstraction has 30053 states and 40701 transitions. [2022-11-20 20:38:33,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:38:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 30053 states and 40701 transitions. [2022-11-20 20:38:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-20 20:38:33,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:38:33,060 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:38:33,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:33,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:33,275 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 20:38:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:38:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash -708765147, now seen corresponding path program 1 times [2022-11-20 20:38:33,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:38:33,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940949145] [2022-11-20 20:38:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:38:33,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:38:33,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:38:33,279 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:33,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ab82d38-90cf-4a82-9484-0dc462750a53/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 20:38:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:38:34,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:38:34,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:38:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-11-20 20:38:34,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:38:34,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:38:34,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940949145] [2022-11-20 20:38:34,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940949145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:38:34,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:38:34,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:38:34,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333085640] [2022-11-20 20:38:34,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:38:34,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:38:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:38:34,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:38:34,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:38:34,775 INFO L87 Difference]: Start difference. First operand 30053 states and 40701 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:38:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:38:37,090 INFO L93 Difference]: Finished difference Result 60027 states and 81308 transitions. [2022-11-20 20:38:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:38:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 189 [2022-11-20 20:38:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:38:37,192 INFO L225 Difference]: With dead ends: 60027 [2022-11-20 20:38:37,192 INFO L226 Difference]: Without dead ends: 30053 [2022-11-20 20:38:37,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 20:38:37,374 INFO L413 NwaCegarLoop]: 2015 mSDtfsCounter, 1956 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:38:37,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 2015 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:38:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30053 states.