./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.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_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/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_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/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_56a0fa36-af68-4991-83c4-994f0914ac9b/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 c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 21:27:12,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:27:12,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:27:12,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:27:12,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:27:12,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:27:12,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:27:12,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:27:12,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:27:12,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:27:12,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:27:12,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:27:12,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:27:12,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:27:12,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:27:12,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:27:12,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:27:12,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:27:12,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:27:12,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:27:12,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:27:12,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:27:12,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:27:12,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:27:12,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:27:12,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:27:12,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:27:12,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:27:12,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:27:12,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:27:12,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:27:12,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:27:12,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:27:12,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:27:12,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:27:12,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:27:12,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:27:12,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:27:12,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:27:12,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:27:12,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:27:12,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 21:27:12,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:27:12,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:27:12,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:27:12,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:27:12,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:27:12,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:27:12,194 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:27:12,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:27:12,194 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:27:12,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:27:12,196 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:27:12,196 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:27:12,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:27:12,197 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:27:12,197 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:27:12,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:27:12,198 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:27:12,198 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:27:12,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:27:12,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:27:12,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:27:12,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:27:12,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:27:12,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:27:12,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:27:12,201 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:27:12,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:27:12,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:27:12,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:27:12,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:27:12,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:27:12,203 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:27:12,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:27:12,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:27:12,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:27:12,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:27:12,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:27:12,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:27:12,205 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_56a0fa36-af68-4991-83c4-994f0914ac9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb [2022-11-20 21:27:12,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:27:12,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:27:12,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:27:12,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:27:12,580 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:27:12,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 21:27:15,879 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:27:16,536 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:27:16,537 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 21:27:16,592 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/data/9fc29f678/62b1e597da694675ae8664a51b6d98b4/FLAG1eb1a6693 [2022-11-20 21:27:16,612 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/data/9fc29f678/62b1e597da694675ae8664a51b6d98b4 [2022-11-20 21:27:16,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:27:16,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:27:16,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:27:16,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:27:16,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:27:16,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:16" (1/1) ... [2022-11-20 21:27:16,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab5e183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:16, skipping insertion in model container [2022-11-20 21:27:16,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:16" (1/1) ... [2022-11-20 21:27:16,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:27:16,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:27:17,664 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 21:27:17,674 INFO L158 Benchmark]: Toolchain (without parser) took 1056.70ms. Allocated memory is still 159.4MB. Free memory was 101.6MB in the beginning and 100.9MB in the end (delta: 679.8kB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2022-11-20 21:27:17,674 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:27:17,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1051.52ms. Allocated memory is still 159.4MB. Free memory was 101.6MB in the beginning and 100.9MB in the end (delta: 679.8kB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2022-11-20 21:27:17,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1051.52ms. Allocated memory is still 159.4MB. Free memory was 101.6MB in the beginning and 100.9MB in the end (delta: 679.8kB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/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_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/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_56a0fa36-af68-4991-83c4-994f0914ac9b/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 c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 21:27:20,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:27:20,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:27:20,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:27:20,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:27:20,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:27:20,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:27:20,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:27:20,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:27:20,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:27:20,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:27:20,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:27:20,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:27:20,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:27:20,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:27:20,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:27:20,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:27:20,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:27:20,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:27:20,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:27:20,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:27:20,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:27:20,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:27:20,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:27:20,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:27:20,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:27:20,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:27:20,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:27:20,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:27:20,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:27:20,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:27:20,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:27:20,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:27:20,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:27:20,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:27:20,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:27:20,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:27:20,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:27:20,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:27:20,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:27:20,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:27:20,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 21:27:20,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:27:20,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:27:20,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:27:20,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:27:20,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:27:20,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:27:20,443 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:27:20,443 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:27:20,443 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:27:20,444 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:27:20,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:27:20,445 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:27:20,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:27:20,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:27:20,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:27:20,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:27:20,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:27:20,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:27:20,447 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:27:20,448 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:27:20,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:27:20,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:27:20,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:27:20,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:27:20,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:27:20,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:27:20,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:27:20,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:27:20,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:27:20,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:27:20,451 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:27:20,451 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:27:20,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:27:20,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:27:20,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:27:20,452 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_56a0fa36-af68-4991-83c4-994f0914ac9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb [2022-11-20 21:27:20,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:27:20,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:27:20,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:27:20,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:27:20,934 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:27:20,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 21:27:24,182 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:27:24,911 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:27:24,912 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 21:27:24,968 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/data/5c7b38d9d/3d819fca12144b09ad3a8b70ac4076b9/FLAG2e813df36 [2022-11-20 21:27:25,032 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/data/5c7b38d9d/3d819fca12144b09ad3a8b70ac4076b9 [2022-11-20 21:27:25,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:27:25,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:27:25,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:27:25,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:27:25,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:27:25,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:25" (1/1) ... [2022-11-20 21:27:25,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3b80a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25, skipping insertion in model container [2022-11-20 21:27:25,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:25" (1/1) ... [2022-11-20 21:27:25,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:27:25,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:27:28,431 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2022-11-20 21:27:28,436 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2022-11-20 21:27:28,437 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2022-11-20 21:27:28,437 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2022-11-20 21:27:28,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:27:28,553 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 21:27:28,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:27:29,177 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2022-11-20 21:27:29,178 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2022-11-20 21:27:29,178 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2022-11-20 21:27:29,179 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2022-11-20 21:27:29,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:27:29,299 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:27:29,781 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2022-11-20 21:27:29,782 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2022-11-20 21:27:29,782 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2022-11-20 21:27:29,783 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_56a0fa36-af68-4991-83c4-994f0914ac9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2022-11-20 21:27:29,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:27:30,151 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:27:30,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30 WrapperNode [2022-11-20 21:27:30,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:27:30,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:27:30,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:27:30,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:27:30,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,514 INFO L138 Inliner]: procedures = 504, calls = 2663, calls flagged for inlining = 292, calls inlined = 259, statements flattened = 5654 [2022-11-20 21:27:30,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:27:30,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:27:30,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:27:30,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:27:30,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:27:30,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:27:30,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:27:30,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:27:30,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (1/1) ... [2022-11-20 21:27:30,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:27:30,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:27:30,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:27:30,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:27:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 21:27:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 21:27:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 21:27:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 21:27:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-20 21:27:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-20 21:27:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 21:27:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 21:27:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 21:27:30,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 21:27:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 21:27:30,899 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 21:27:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2022-11-20 21:27:30,899 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2022-11-20 21:27:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-20 21:27:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-20 21:27:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 21:27:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 21:27:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-20 21:27:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-20 21:27:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 21:27:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 21:27:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-20 21:27:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-20 21:27:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2022-11-20 21:27:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2022-11-20 21:27:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-20 21:27:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-20 21:27:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-20 21:27:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-20 21:27:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 21:27:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 21:27:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2022-11-20 21:27:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2022-11-20 21:27:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 21:27:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 21:27:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 21:27:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 21:27:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 21:27:30,905 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 21:27:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-20 21:27:30,906 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-20 21:27:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 21:27:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 21:27:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 21:27:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 21:27:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-20 21:27:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-20 21:27:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 21:27:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 21:27:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:27:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 21:27:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 21:27:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 21:27:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-20 21:27:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-20 21:27:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2022-11-20 21:27:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2022-11-20 21:27:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 21:27:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 21:27:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 21:27:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 21:27:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-20 21:27:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-20 21:27:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2022-11-20 21:27:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2022-11-20 21:27:30,910 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 21:27:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 21:27:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 21:27:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 21:27:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2022-11-20 21:27:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2022-11-20 21:27:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 21:27:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 21:27:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 21:27:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 21:27:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 21:27:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 21:27:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2022-11-20 21:27:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2022-11-20 21:27:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-20 21:27:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-20 21:27:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 21:27:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 21:27:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 21:27:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 21:27:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2022-11-20 21:27:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2022-11-20 21:27:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2022-11-20 21:27:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2022-11-20 21:27:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:27:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 21:27:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 21:27:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 21:27:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 21:27:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-20 21:27:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-20 21:27:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-20 21:27:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-20 21:27:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:27:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-20 21:27:30,919 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-20 21:27:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 21:27:30,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 21:27:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 21:27:30,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 21:27:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 21:27:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 21:27:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-20 21:27:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-20 21:27:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 21:27:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 21:27:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 21:27:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 21:27:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2022-11-20 21:27:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2022-11-20 21:27:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2022-11-20 21:27:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2022-11-20 21:27:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-20 21:27:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-20 21:27:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-20 21:27:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-20 21:27:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-20 21:27:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-20 21:27:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 21:27:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 21:27:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 21:27:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 21:27:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-20 21:27:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-20 21:27:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 21:27:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 21:27:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2022-11-20 21:27:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2022-11-20 21:27:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2022-11-20 21:27:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2022-11-20 21:27:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-20 21:27:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-20 21:27:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:27:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:27:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-20 21:27:30,931 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-20 21:27:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 21:27:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 21:27:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 21:27:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 21:27:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 21:27:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 21:27:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 21:27:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 21:27:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 21:27:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-20 21:27:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2022-11-20 21:27:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2022-11-20 21:27:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 21:27:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 21:27:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 21:27:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 21:27:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2022-11-20 21:27:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2022-11-20 21:27:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-20 21:27:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-20 21:27:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 21:27:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 21:27:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2022-11-20 21:27:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2022-11-20 21:27:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-20 21:27:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-20 21:27:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-20 21:27:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-20 21:27:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2022-11-20 21:27:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2022-11-20 21:27:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2022-11-20 21:27:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2022-11-20 21:27:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 21:27:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 21:27:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:27:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 21:27:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 21:27:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 21:27:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 21:27:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 21:27:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2022-11-20 21:27:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2022-11-20 21:27:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-20 21:27:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-20 21:27:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 21:27:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 21:27:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 21:27:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 21:27:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 21:27:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2022-11-20 21:27:30,937 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2022-11-20 21:27:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2022-11-20 21:27:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2022-11-20 21:27:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-20 21:27:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-20 21:27:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2022-11-20 21:27:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2022-11-20 21:27:30,938 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2022-11-20 21:27:30,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2022-11-20 21:27:30,940 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-20 21:27:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-20 21:27:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 21:27:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 21:27:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 21:27:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 21:27:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 21:27:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 21:27:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-20 21:27:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-20 21:27:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-20 21:27:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-20 21:27:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-20 21:27:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-20 21:27:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 21:27:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 21:27:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 21:27:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 21:27:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2022-11-20 21:27:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2022-11-20 21:27:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 21:27:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 21:27:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2022-11-20 21:27:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2022-11-20 21:27:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 21:27:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 21:27:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2022-11-20 21:27:30,948 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2022-11-20 21:27:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-20 21:27:30,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-20 21:27:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 21:27:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 21:27:30,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 21:27:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 21:27:30,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 21:27:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-20 21:27:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-20 21:27:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 21:27:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 21:27:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_task_lock_of_rhine_private [2022-11-20 21:27:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_task_lock_of_rhine_private [2022-11-20 21:27:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2022-11-20 21:27:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2022-11-20 21:27:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2022-11-20 21:27:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2022-11-20 21:27:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2022-11-20 21:27:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2022-11-20 21:27:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2022-11-20 21:27:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2022-11-20 21:27:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-20 21:27:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-20 21:27:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 21:27:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 21:27:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-20 21:27:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-20 21:27:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 21:27:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 21:27:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2022-11-20 21:27:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2022-11-20 21:27:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2022-11-20 21:27:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2022-11-20 21:27:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 21:27:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 21:27:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 21:27:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 21:27:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2022-11-20 21:27:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2022-11-20 21:27:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2022-11-20 21:27:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2022-11-20 21:27:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 21:27:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 21:27:32,038 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:27:32,042 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:27:32,698 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 21:38:21,538 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 21:38:21,637 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:38:21,657 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:38:21,657 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 21:38:21,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:38:21 BoogieIcfgContainer [2022-11-20 21:38:21,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:38:21,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:38:21,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:38:21,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:38:21,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:25" (1/3) ... [2022-11-20 21:38:21,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd7ed7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:38:21, skipping insertion in model container [2022-11-20 21:38:21,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:30" (2/3) ... [2022-11-20 21:38:21,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd7ed7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:38:21, skipping insertion in model container [2022-11-20 21:38:21,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:38:21" (3/3) ... [2022-11-20 21:38:21,672 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 21:38:21,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:38:21,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 21:38:21,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:38:21,811 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;@46feec67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:38:21,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 21:38:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 2203 states, 1496 states have (on average 1.2740641711229947) internal successors, (1906), 1545 states have internal predecessors, (1906), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) [2022-11-20 21:38:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-20 21:38:21,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:38:21,849 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:38:21,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:38:21,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:38:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash 784848318, now seen corresponding path program 1 times [2022-11-20 21:38:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:38:21,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724856674] [2022-11-20 21:38:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:38:21,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:21,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:38:21,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:38:21,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 21:38:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:38:27,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 4338 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:38:27,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:38:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-20 21:38:27,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:38:27,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:38:27,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724856674] [2022-11-20 21:38:27,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724856674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:38:27,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:38:27,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:38:27,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963558031] [2022-11-20 21:38:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:38:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:38:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:38:27,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:38:27,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:38:27,413 INFO L87 Difference]: Start difference. First operand has 2203 states, 1496 states have (on average 1.2740641711229947) internal successors, (1906), 1545 states have internal predecessors, (1906), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:38:30,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:38:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:38:31,056 INFO L93 Difference]: Finished difference Result 6386 states and 9048 transitions. [2022-11-20 21:38:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:38:31,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 184 [2022-11-20 21:38:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:38:31,120 INFO L225 Difference]: With dead ends: 6386 [2022-11-20 21:38:31,120 INFO L226 Difference]: Without dead ends: 4203 [2022-11-20 21:38:31,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:38:31,157 INFO L413 NwaCegarLoop]: 3541 mSDtfsCounter, 2854 mSDsluCounter, 2933 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 6474 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:38:31,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2854 Valid, 6474 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 21:38:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4203 states. [2022-11-20 21:38:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4203 to 4199. [2022-11-20 21:38:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4199 states, 2850 states have (on average 1.2578947368421052) internal successors, (3585), 2945 states have internal predecessors, (3585), 1104 states have call successors, (1104), 243 states have call predecessors, (1104), 242 states have return successors, (1100), 1074 states have call predecessors, (1100), 1100 states have call successors, (1100) [2022-11-20 21:38:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 5789 transitions. [2022-11-20 21:38:31,552 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 5789 transitions. Word has length 184 [2022-11-20 21:38:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:38:31,555 INFO L495 AbstractCegarLoop]: Abstraction has 4199 states and 5789 transitions. [2022-11-20 21:38:31,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:38:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 5789 transitions. [2022-11-20 21:38:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 21:38:31,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:38:31,571 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:38:31,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/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 21:38:31,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:31,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:38:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:38:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash -764337325, now seen corresponding path program 1 times [2022-11-20 21:38:31,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:38:31,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040351187] [2022-11-20 21:38:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:38:31,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:38:31,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:38:31,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 21:38:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:38:37,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 4392 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:38:37,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:38:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-20 21:38:37,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:38:37,484 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:38:37,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040351187] [2022-11-20 21:38:37,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040351187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:38:37,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:38:37,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:38:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775097590] [2022-11-20 21:38:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:38:37,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:38:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:38:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:38:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:38:37,488 INFO L87 Difference]: Start difference. First operand 4199 states and 5789 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 21:38:40,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:38:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:38:42,252 INFO L93 Difference]: Finished difference Result 12011 states and 16553 transitions. [2022-11-20 21:38:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:38:42,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 186 [2022-11-20 21:38:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:38:42,313 INFO L225 Difference]: With dead ends: 12011 [2022-11-20 21:38:42,313 INFO L226 Difference]: Without dead ends: 7845 [2022-11-20 21:38:42,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:38:42,336 INFO L413 NwaCegarLoop]: 3691 mSDtfsCounter, 2526 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 6572 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:38:42,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 6572 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 117 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 21:38:42,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7845 states. [2022-11-20 21:38:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 7824. [2022-11-20 21:38:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7824 states, 5287 states have (on average 1.251749574427842) internal successors, (6618), 5461 states have internal predecessors, (6618), 2059 states have call successors, (2059), 476 states have call predecessors, (2059), 475 states have return successors, (2055), 2004 states have call predecessors, (2055), 2055 states have call successors, (2055) [2022-11-20 21:38:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7824 states to 7824 states and 10732 transitions. [2022-11-20 21:38:42,843 INFO L78 Accepts]: Start accepts. Automaton has 7824 states and 10732 transitions. Word has length 186 [2022-11-20 21:38:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:38:42,844 INFO L495 AbstractCegarLoop]: Abstraction has 7824 states and 10732 transitions. [2022-11-20 21:38:42,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 21:38:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7824 states and 10732 transitions. [2022-11-20 21:38:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 21:38:42,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:38:42,849 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:38:42,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:38:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:43,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:38:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:38:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1847381231, now seen corresponding path program 1 times [2022-11-20 21:38:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:38:43,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560979799] [2022-11-20 21:38:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:38:43,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:43,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:38:43,091 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:38:43,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 21:38:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:38:48,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 4375 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:38:48,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:38:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-20 21:38:48,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:38:48,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:38:48,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560979799] [2022-11-20 21:38:48,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560979799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:38:48,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:38:48,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:38:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347473587] [2022-11-20 21:38:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:38:48,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:38:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:38:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:38:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:38:48,784 INFO L87 Difference]: Start difference. First operand 7824 states and 10732 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:38:51,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:38:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:38:53,572 INFO L93 Difference]: Finished difference Result 21900 states and 30000 transitions. [2022-11-20 21:38:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:38:53,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 188 [2022-11-20 21:38:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:38:53,693 INFO L225 Difference]: With dead ends: 21900 [2022-11-20 21:38:53,693 INFO L226 Difference]: Without dead ends: 14109 [2022-11-20 21:38:53,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:38:53,743 INFO L413 NwaCegarLoop]: 3454 mSDtfsCounter, 2418 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 6334 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:38:53,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 6334 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 21:38:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14109 states. [2022-11-20 21:38:54,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14109 to 14084. [2022-11-20 21:38:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14084 states, 9457 states have (on average 1.2509252405625462) internal successors, (11830), 9787 states have internal predecessors, (11830), 3721 states have call successors, (3721), 908 states have call predecessors, (3721), 903 states have return successors, (3719), 3604 states have call predecessors, (3719), 3717 states have call successors, (3719) [2022-11-20 21:38:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14084 states to 14084 states and 19270 transitions. [2022-11-20 21:38:54,942 INFO L78 Accepts]: Start accepts. Automaton has 14084 states and 19270 transitions. Word has length 188 [2022-11-20 21:38:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:38:54,944 INFO L495 AbstractCegarLoop]: Abstraction has 14084 states and 19270 transitions. [2022-11-20 21:38:54,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:38:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 14084 states and 19270 transitions. [2022-11-20 21:38:54,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-20 21:38:54,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:38:54,950 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:38:55,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:38:55,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:55,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:38:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:38:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1199478735, now seen corresponding path program 1 times [2022-11-20 21:38:55,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:38:55,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290578691] [2022-11-20 21:38:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:38:55,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:38:55,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:38:55,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:38:55,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 21:39:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:39:00,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 4445 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:39:00,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:39:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-20 21:39:01,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:39:01,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:39:01,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290578691] [2022-11-20 21:39:01,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290578691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:39:01,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:39:01,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:39:01,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139404852] [2022-11-20 21:39:01,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:39:01,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:39:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:39:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:39:01,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:01,297 INFO L87 Difference]: Start difference. First operand 14084 states and 19270 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:39:03,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:39:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:39:06,281 INFO L93 Difference]: Finished difference Result 35243 states and 48195 transitions. [2022-11-20 21:39:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:39:06,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 198 [2022-11-20 21:39:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:39:06,418 INFO L225 Difference]: With dead ends: 35243 [2022-11-20 21:39:06,418 INFO L226 Difference]: Without dead ends: 21192 [2022-11-20 21:39:06,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:06,482 INFO L413 NwaCegarLoop]: 3539 mSDtfsCounter, 2887 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 6493 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:39:06,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 6493 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 21:39:06,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21192 states. [2022-11-20 21:39:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21192 to 21167. [2022-11-20 21:39:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21167 states, 14207 states have (on average 1.2479763496867742) internal successors, (17730), 14715 states have internal predecessors, (17730), 5589 states have call successors, (5589), 1375 states have call predecessors, (5589), 1368 states have return successors, (5588), 5400 states have call predecessors, (5588), 5585 states have call successors, (5588) [2022-11-20 21:39:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21167 states to 21167 states and 28907 transitions. [2022-11-20 21:39:08,166 INFO L78 Accepts]: Start accepts. Automaton has 21167 states and 28907 transitions. Word has length 198 [2022-11-20 21:39:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:39:08,167 INFO L495 AbstractCegarLoop]: Abstraction has 21167 states and 28907 transitions. [2022-11-20 21:39:08,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:39:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 21167 states and 28907 transitions. [2022-11-20 21:39:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-20 21:39:08,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:39:08,173 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:39:08,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:39:08,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:39:08,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:39:08,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:39:08,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1357686421, now seen corresponding path program 1 times [2022-11-20 21:39:08,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:39:08,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809566817] [2022-11-20 21:39:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:39:08,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:39:08,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:39:08,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:39:08,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 21:39:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:39:14,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 4448 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:39:14,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:39:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-20 21:39:14,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:39:14,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:39:14,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809566817] [2022-11-20 21:39:14,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809566817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:39:14,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:39:14,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:39:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328774581] [2022-11-20 21:39:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:39:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:39:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:39:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:39:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:14,730 INFO L87 Difference]: Start difference. First operand 21167 states and 28907 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:39:17,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:39:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:39:20,594 INFO L93 Difference]: Finished difference Result 49653 states and 67674 transitions. [2022-11-20 21:39:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:39:20,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 198 [2022-11-20 21:39:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:39:20,776 INFO L225 Difference]: With dead ends: 49653 [2022-11-20 21:39:20,776 INFO L226 Difference]: Without dead ends: 28519 [2022-11-20 21:39:21,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:21,017 INFO L413 NwaCegarLoop]: 3915 mSDtfsCounter, 2474 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 6825 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:39:21,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 6825 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 21:39:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28519 states. [2022-11-20 21:39:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28519 to 28488. [2022-11-20 21:39:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28488 states, 19071 states have (on average 1.2405746945624245) internal successors, (23659), 19766 states have internal predecessors, (23659), 7482 states have call successors, (7482), 1947 states have call predecessors, (7482), 1932 states have return successors, (7482), 7191 states have call predecessors, (7482), 7478 states have call successors, (7482) [2022-11-20 21:39:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28488 states to 28488 states and 38623 transitions. [2022-11-20 21:39:23,496 INFO L78 Accepts]: Start accepts. Automaton has 28488 states and 38623 transitions. Word has length 198 [2022-11-20 21:39:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:39:23,497 INFO L495 AbstractCegarLoop]: Abstraction has 28488 states and 38623 transitions. [2022-11-20 21:39:23,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:39:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 28488 states and 38623 transitions. [2022-11-20 21:39:23,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-20 21:39:23,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:39:23,503 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:39:23,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 21:39:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:39:23,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:39:23,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:39:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2031869905, now seen corresponding path program 1 times [2022-11-20 21:39:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:39:23,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999079476] [2022-11-20 21:39:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:39:23,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:39:23,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:39:23,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:39:23,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 21:39:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:39:30,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 4425 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:39:30,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:39:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-20 21:39:30,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:39:30,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:39:30,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999079476] [2022-11-20 21:39:30,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999079476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:39:30,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:39:30,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:39:30,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268715078] [2022-11-20 21:39:30,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:39:30,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:39:30,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:39:30,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:39:30,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:30,782 INFO L87 Difference]: Start difference. First operand 28488 states and 38623 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 21:39:33,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:39:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:39:36,994 INFO L93 Difference]: Finished difference Result 78292 states and 106184 transitions. [2022-11-20 21:39:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:39:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 211 [2022-11-20 21:39:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:39:37,459 INFO L225 Difference]: With dead ends: 78292 [2022-11-20 21:39:37,460 INFO L226 Difference]: Without dead ends: 49837 [2022-11-20 21:39:37,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:37,565 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 2811 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 7208 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 21:39:37,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2811 Valid, 7208 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 21:39:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49837 states. [2022-11-20 21:39:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49837 to 49788. [2022-11-20 21:39:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49788 states, 33490 states have (on average 1.2389668557778442) internal successors, (41493), 34743 states have internal predecessors, (41493), 12946 states have call successors, (12946), 3378 states have call predecessors, (12946), 3349 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2022-11-20 21:39:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49788 states to 49788 states and 67389 transitions. [2022-11-20 21:39:41,708 INFO L78 Accepts]: Start accepts. Automaton has 49788 states and 67389 transitions. Word has length 211 [2022-11-20 21:39:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:39:41,709 INFO L495 AbstractCegarLoop]: Abstraction has 49788 states and 67389 transitions. [2022-11-20 21:39:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 21:39:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 49788 states and 67389 transitions. [2022-11-20 21:39:41,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-20 21:39:41,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:39:41,717 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:39:41,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 21:39:41,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:39:41,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:39:41,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:39:41,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1837612745, now seen corresponding path program 1 times [2022-11-20 21:39:41,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:39:41,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611594838] [2022-11-20 21:39:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:39:41,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:39:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:39:41,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:39:41,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 21:39:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:39:48,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 4472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:39:48,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:39:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-11-20 21:39:49,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:39:49,252 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:39:49,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611594838] [2022-11-20 21:39:49,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611594838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:39:49,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:39:49,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:39:49,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053259456] [2022-11-20 21:39:49,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:39:49,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:39:49,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:39:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:39:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:49,254 INFO L87 Difference]: Start difference. First operand 49788 states and 67389 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 21:39:51,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:39:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:39:57,744 INFO L93 Difference]: Finished difference Result 146795 states and 198764 transitions. [2022-11-20 21:39:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:39:57,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 245 [2022-11-20 21:39:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:39:58,413 INFO L225 Difference]: With dead ends: 146795 [2022-11-20 21:39:58,414 INFO L226 Difference]: Without dead ends: 97221 [2022-11-20 21:39:58,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:39:58,712 INFO L413 NwaCegarLoop]: 4697 mSDtfsCounter, 2806 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 7639 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:39:58,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2806 Valid, 7639 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 21:39:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97221 states. [2022-11-20 21:40:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97221 to 97217. [2022-11-20 21:40:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97217 states, 65422 states have (on average 1.2374583473449299) internal successors, (80957), 67750 states have internal predecessors, (80957), 25217 states have call successors, (25217), 6616 states have call predecessors, (25217), 6575 states have return successors, (25229), 24314 states have call predecessors, (25229), 25213 states have call successors, (25229) [2022-11-20 21:40:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97217 states to 97217 states and 131403 transitions. [2022-11-20 21:40:06,407 INFO L78 Accepts]: Start accepts. Automaton has 97217 states and 131403 transitions. Word has length 245 [2022-11-20 21:40:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:40:06,408 INFO L495 AbstractCegarLoop]: Abstraction has 97217 states and 131403 transitions. [2022-11-20 21:40:06,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 21:40:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 97217 states and 131403 transitions. [2022-11-20 21:40:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-20 21:40:06,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:40:06,414 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:40:06,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 21:40:06,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:40:06,631 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 21:40:06,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:40:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash 85615289, now seen corresponding path program 1 times [2022-11-20 21:40:06,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:40:06,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157804650] [2022-11-20 21:40:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:40:06,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:40:06,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:40:06,641 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:40:06,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a0fa36-af68-4991-83c4-994f0914ac9b/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