./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 --- 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 12:15:50,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:15:50,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:15:50,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:15:50,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:15:50,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:15:50,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:15:50,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:15:50,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:15:50,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:15:50,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:15:50,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:15:50,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:15:50,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:15:50,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:15:50,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:15:50,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:15:50,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:15:50,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:15:50,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:15:50,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:15:50,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:15:50,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:15:50,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:15:50,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:15:50,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:15:50,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:15:50,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:15:50,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:15:50,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:15:50,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:15:50,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:15:50,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:15:50,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:15:50,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:15:50,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:15:50,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:15:50,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:15:50,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:15:50,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:15:50,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:15:50,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:15:50,207 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:15:50,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:15:50,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:15:50,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:15:50,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:15:50,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:15:50,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:15:50,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:15:50,211 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:15:50,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:15:50,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:15:50,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:15:50,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:15:50,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:15:50,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:15:50,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:15:50,213 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:15:50,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:15:50,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:15:50,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:15:50,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:15:50,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:15:50,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:15:50,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:15:50,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:15:50,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:15:50,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:15:50,215 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:15:50,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:15:50,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:15:50,216 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 [2022-11-20 12:15:50,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:15:50,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:15:50,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:15:50,630 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:15:50,631 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:15:50,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-11-20 12:15:53,639 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:15:54,370 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:15:54,371 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-11-20 12:15:54,428 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/data/df529ab7c/c197e8705010452985ad740a31b24590/FLAG4fe1be0cb [2022-11-20 12:15:54,450 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/data/df529ab7c/c197e8705010452985ad740a31b24590 [2022-11-20 12:15:54,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:15:54,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:15:54,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:15:54,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:15:54,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:15:54,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:54" (1/1) ... [2022-11-20 12:15:54,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb521ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:54, skipping insertion in model container [2022-11-20 12:15:54,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:54" (1/1) ... [2022-11-20 12:15:54,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:15:54,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:15:55,285 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 12:15:55,295 INFO L158 Benchmark]: Toolchain (without parser) took 838.82ms. Allocated memory is still 136.3MB. Free memory was 99.3MB in the beginning and 72.8MB in the end (delta: 26.4MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2022-11-20 12:15:55,296 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 136.3MB. Free memory is still 105.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:15:55,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 833.93ms. Allocated memory is still 136.3MB. Free memory was 99.0MB in the beginning and 72.8MB in the end (delta: 26.2MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2022-11-20 12:15:55,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 136.3MB. Free memory is still 105.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 833.93ms. Allocated memory is still 136.3MB. Free memory was 99.0MB in the beginning and 72.8MB in the end (delta: 26.2MB). Peak memory consumption was 43.3MB. 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 --- 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 12:15:57,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:15:57,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:15:57,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:15:57,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:15:57,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:15:57,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:15:57,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:15:57,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:15:57,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:15:57,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:15:57,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:15:57,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:15:57,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:15:57,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:15:57,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:15:57,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:15:57,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:15:57,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:15:57,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:15:57,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:15:57,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:15:57,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:15:57,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:15:57,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:15:57,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:15:57,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:15:57,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:15:57,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:15:57,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:15:57,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:15:57,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:15:57,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:15:57,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:15:57,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:15:57,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:15:57,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:15:57,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:15:57,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:15:57,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:15:57,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:15:57,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:15:57,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:15:57,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:15:57,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:15:57,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:15:57,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:15:57,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:15:57,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:15:57,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:15:57,908 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:15:57,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:15:57,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:15:57,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:15:57,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:15:57,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:15:57,910 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:15:57,910 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:15:57,911 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:15:57,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:15:57,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:15:57,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:15:57,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:15:57,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:15:57,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:15:57,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:15:57,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:15:57,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:15:57,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:15:57,914 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:15:57,914 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:15:57,914 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:15:57,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:15:57,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:15:57,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:15:57,915 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 [2022-11-20 12:15:58,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:15:58,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:15:58,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:15:58,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:15:58,333 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:15:58,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-11-20 12:16:01,568 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:16:02,380 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:16:02,380 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-11-20 12:16:02,441 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/data/0f5e74f7b/f972a75971414a04aa13dbd6f7ef30d1/FLAG42a2a37fd [2022-11-20 12:16:02,461 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/data/0f5e74f7b/f972a75971414a04aa13dbd6f7ef30d1 [2022-11-20 12:16:02,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:16:02,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:16:02,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:16:02,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:16:02,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:16:02,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:16:02" (1/1) ... [2022-11-20 12:16:02,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718e535f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:02, skipping insertion in model container [2022-11-20 12:16:02,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:16:02" (1/1) ... [2022-11-20 12:16:02,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:16:02,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:16:06,095 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[347848,347861] [2022-11-20 12:16:06,108 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348017,348030] [2022-11-20 12:16:06,109 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348184,348197] [2022-11-20 12:16:06,111 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348352,348365] [2022-11-20 12:16:06,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:16:06,186 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:16:06,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:16:06,715 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[347848,347861] [2022-11-20 12:16:06,716 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348017,348030] [2022-11-20 12:16:06,716 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348184,348197] [2022-11-20 12:16:06,717 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348352,348365] [2022-11-20 12:16:06,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:16:06,757 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:16:07,229 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[347848,347861] [2022-11-20 12:16:07,229 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348017,348030] [2022-11-20 12:16:07,230 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348184,348197] [2022-11-20 12:16:07,230 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_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348352,348365] [2022-11-20 12:16:07,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:16:07,580 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:16:07,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07 WrapperNode [2022-11-20 12:16:07,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:16:07,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:16:07,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:16:07,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:16:07,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:07,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:07,959 INFO L138 Inliner]: procedures = 465, calls = 2361, calls flagged for inlining = 206, calls inlined = 184, statements flattened = 5025 [2022-11-20 12:16:07,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:16:07,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:16:07,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:16:07,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:16:07,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:07,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:08,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:08,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:08,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:08,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:08,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:08,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:08,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:16:08,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:16:08,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:16:08,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:16:08,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (1/1) ... [2022-11-20 12:16:08,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:16:08,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:08,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:16:08,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:16:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-20 12:16:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-20 12:16:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 12:16:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 12:16:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 12:16:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 12:16:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 12:16:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 12:16:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2022-11-20 12:16:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2022-11-20 12:16:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:16:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:16:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2022-11-20 12:16:08,366 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2022-11-20 12:16:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 12:16:08,366 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 12:16:08,367 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-20 12:16:08,367 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-20 12:16:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 12:16:08,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-20 12:16:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2022-11-20 12:16:08,369 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2022-11-20 12:16:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 12:16:08,369 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 12:16:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2022-11-20 12:16:08,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2022-11-20 12:16:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-20 12:16:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-20 12:16:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_close [2022-11-20 12:16:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_close [2022-11-20 12:16:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2022-11-20 12:16:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2022-11-20 12:16:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 12:16:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 12:16:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 12:16:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 12:16:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-20 12:16:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-20 12:16:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 12:16:08,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 12:16:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2022-11-20 12:16:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2022-11-20 12:16:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 12:16:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 12:16:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:16:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-20 12:16:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-20 12:16:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:16:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-20 12:16:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-20 12:16:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 12:16:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 12:16:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 12:16:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 12:16:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2022-11-20 12:16:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2022-11-20 12:16:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 12:16:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 12:16:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2022-11-20 12:16:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2022-11-20 12:16:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 12:16:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 12:16:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 12:16:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 12:16:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2022-11-20 12:16:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2022-11-20 12:16:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 12:16:08,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 12:16:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2022-11-20 12:16:08,378 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2022-11-20 12:16:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 12:16:08,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 12:16:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 12:16:08,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 12:16:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-20 12:16:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-20 12:16:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2022-11-20 12:16:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2022-11-20 12:16:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 12:16:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 12:16:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-20 12:16:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-20 12:16:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2022-11-20 12:16:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2022-11-20 12:16:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 12:16:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 12:16:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 12:16:08,382 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 12:16:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2022-11-20 12:16:08,382 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2022-11-20 12:16:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2022-11-20 12:16:08,383 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2022-11-20 12:16:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 12:16:08,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-20 12:16:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:16:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 12:16:08,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 12:16:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2022-11-20 12:16:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2022-11-20 12:16:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-20 12:16:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-20 12:16:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:16:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 12:16:08,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 12:16:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 12:16:08,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 12:16:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:16:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 12:16:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_open [2022-11-20 12:16:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_open [2022-11-20 12:16:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 12:16:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 12:16:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:16:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:16:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 12:16:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vlsi_mod_exit_11_2 [2022-11-20 12:16:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vlsi_mod_exit_11_2 [2022-11-20 12:16:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-20 12:16:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-20 12:16:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 12:16:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 12:16:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 12:16:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 12:16:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2022-11-20 12:16:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2022-11-20 12:16:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 12:16:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2022-11-20 12:16:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2022-11-20 12:16:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:16:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:16:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 12:16:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 12:16:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:16:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:16:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 12:16:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:16:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 12:16:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 12:16:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 12:16:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-20 12:16:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-20 12:16:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-20 12:16:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-11-20 12:16:08,403 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-11-20 12:16:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2022-11-20 12:16:08,403 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2022-11-20 12:16:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 12:16:08,404 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 12:16:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 12:16:08,404 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 12:16:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:16:08,405 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:16:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 12:16:08,405 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 12:16:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2022-11-20 12:16:08,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2022-11-20 12:16:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-20 12:16:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-20 12:16:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:16:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 12:16:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 12:16:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:16:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2022-11-20 12:16:08,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2022-11-20 12:16:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 12:16:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 12:16:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 12:16:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:16:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2022-11-20 12:16:08,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2022-11-20 12:16:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:16:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-20 12:16:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-20 12:16:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-20 12:16:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-20 12:16:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-11-20 12:16:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-11-20 12:16:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-20 12:16:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-20 12:16:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 12:16:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 12:16:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 12:16:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 12:16:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 12:16:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 12:16:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 12:16:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 12:16:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-20 12:16:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-20 12:16:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2022-11-20 12:16:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2022-11-20 12:16:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2022-11-20 12:16:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2022-11-20 12:16:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 12:16:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 12:16:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 12:16:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 12:16:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 12:16:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 12:16:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:16:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:16:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 12:16:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-20 12:16:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-20 12:16:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 12:16:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:16:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 12:16:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:16:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:16:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2022-11-20 12:16:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2022-11-20 12:16:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-20 12:16:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-20 12:16:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-20 12:16:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-20 12:16:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2022-11-20 12:16:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2022-11-20 12:16:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 12:16:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 12:16:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2022-11-20 12:16:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2022-11-20 12:16:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vlsi_irda_dev [2022-11-20 12:16:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vlsi_irda_dev [2022-11-20 12:16:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2022-11-20 12:16:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2022-11-20 12:16:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-20 12:16:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-20 12:16:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2022-11-20 12:16:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2022-11-20 12:16:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 12:16:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 12:16:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-20 12:16:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-20 12:16:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 12:16:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 12:16:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2022-11-20 12:16:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2022-11-20 12:16:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-11-20 12:16:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-11-20 12:16:09,418 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:16:09,422 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:16:11,460 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 12:16:43,689 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 12:16:43,806 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:16:43,838 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:16:43,843 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:16:43,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:16:43 BoogieIcfgContainer [2022-11-20 12:16:43,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:16:43,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:16:43,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:16:43,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:16:43,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:16:02" (1/3) ... [2022-11-20 12:16:43,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bec18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:16:43, skipping insertion in model container [2022-11-20 12:16:43,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:16:07" (2/3) ... [2022-11-20 12:16:43,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bec18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:16:43, skipping insertion in model container [2022-11-20 12:16:43,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:16:43" (3/3) ... [2022-11-20 12:16:43,862 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-11-20 12:16:43,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:16:43,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 12:16:44,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:16:44,037 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4fc26b1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:16:44,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 12:16:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 1854 states, 1236 states have (on average 1.279126213592233) internal successors, (1581), 1262 states have internal predecessors, (1581), 512 states have call successors, (512), 104 states have call predecessors, (512), 103 states have return successors, (505), 502 states have call predecessors, (505), 505 states have call successors, (505) [2022-11-20 12:16:44,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-20 12:16:44,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:44,076 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:44,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:16:44,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:44,083 INFO L85 PathProgramCache]: Analyzing trace with hash 786293860, now seen corresponding path program 1 times [2022-11-20 12:16:44,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:44,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804652033] [2022-11-20 12:16:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:44,106 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 12:16:44,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:44,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:16:44,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:16:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:45,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:16:45,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-20 12:16:45,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:45,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:45,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804652033] [2022-11-20 12:16:45,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804652033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:45,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:45,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:16:45,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101592995] [2022-11-20 12:16:45,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:45,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:16:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:46,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:16:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:16:46,043 INFO L87 Difference]: Start difference. First operand has 1854 states, 1236 states have (on average 1.279126213592233) internal successors, (1581), 1262 states have internal predecessors, (1581), 512 states have call successors, (512), 104 states have call predecessors, (512), 103 states have return successors, (505), 502 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:16:48,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:16:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:48,901 INFO L93 Difference]: Finished difference Result 5381 states and 7663 transitions. [2022-11-20 12:16:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:16:48,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 149 [2022-11-20 12:16:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:48,962 INFO L225 Difference]: With dead ends: 5381 [2022-11-20 12:16:48,963 INFO L226 Difference]: Without dead ends: 3543 [2022-11-20 12:16:48,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 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 12:16:48,993 INFO L413 NwaCegarLoop]: 3047 mSDtfsCounter, 2435 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 5535 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:49,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2435 Valid, 5535 Invalid, 34 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 12:16:49,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2022-11-20 12:16:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3539. [2022-11-20 12:16:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 2373 states have (on average 1.2671723556679308) internal successors, (3007), 2422 states have internal predecessors, (3007), 961 states have call successors, (961), 203 states have call predecessors, (961), 202 states have return successors, (957), 951 states have call predecessors, (957), 957 states have call successors, (957) [2022-11-20 12:16:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 4925 transitions. [2022-11-20 12:16:49,452 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 4925 transitions. Word has length 149 [2022-11-20 12:16:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:49,455 INFO L495 AbstractCegarLoop]: Abstraction has 3539 states and 4925 transitions. [2022-11-20 12:16:49,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:16:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 4925 transitions. [2022-11-20 12:16:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-20 12:16:49,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:49,475 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:49,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:49,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:49,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:16:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1626366225, now seen corresponding path program 1 times [2022-11-20 12:16:49,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:49,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419923307] [2022-11-20 12:16:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:49,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:49,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:16:49,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:16:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:51,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:16:51,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-20 12:16:51,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:51,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:51,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419923307] [2022-11-20 12:16:51,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419923307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:51,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:51,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:16:51,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375863616] [2022-11-20 12:16:51,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:51,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:16:51,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:51,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:16:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:16:51,507 INFO L87 Difference]: Start difference. First operand 3539 states and 4925 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:16:53,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:16:54,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:54,202 INFO L93 Difference]: Finished difference Result 10247 states and 14233 transitions. [2022-11-20 12:16:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:16:54,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 150 [2022-11-20 12:16:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:54,263 INFO L225 Difference]: With dead ends: 10247 [2022-11-20 12:16:54,264 INFO L226 Difference]: Without dead ends: 6735 [2022-11-20 12:16:54,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 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 12:16:54,285 INFO L413 NwaCegarLoop]: 3243 mSDtfsCounter, 2325 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 5732 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:54,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 5732 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 12:16:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2022-11-20 12:16:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 6705. [2022-11-20 12:16:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6705 states, 4508 states have (on average 1.263309671694765) internal successors, (5695), 4606 states have internal predecessors, (5695), 1797 states have call successors, (1797), 402 states have call predecessors, (1797), 397 states have return successors, (1807), 1768 states have call predecessors, (1807), 1793 states have call successors, (1807) [2022-11-20 12:16:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 9299 transitions. [2022-11-20 12:16:54,947 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 9299 transitions. Word has length 150 [2022-11-20 12:16:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:54,948 INFO L495 AbstractCegarLoop]: Abstraction has 6705 states and 9299 transitions. [2022-11-20 12:16:54,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:16:54,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 9299 transitions. [2022-11-20 12:16:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-20 12:16:54,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:54,954 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:54,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:55,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:55,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:16:55,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:55,181 INFO L85 PathProgramCache]: Analyzing trace with hash 443527685, now seen corresponding path program 1 times [2022-11-20 12:16:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:55,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734771198] [2022-11-20 12:16:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:55,184 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 12:16:55,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:55,187 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:16:55,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:16:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:56,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:16:56,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-20 12:16:56,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:56,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:16:56,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734771198] [2022-11-20 12:16:56,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734771198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:56,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:56,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:16:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182459247] [2022-11-20 12:16:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:56,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:16:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:16:56,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:16:56,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:16:56,930 INFO L87 Difference]: Start difference. First operand 6705 states and 9299 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:16:59,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:17:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:00,081 INFO L93 Difference]: Finished difference Result 19387 states and 26783 transitions. [2022-11-20 12:17:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:17:00,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 158 [2022-11-20 12:17:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:00,191 INFO L225 Difference]: With dead ends: 19387 [2022-11-20 12:17:00,191 INFO L226 Difference]: Without dead ends: 12709 [2022-11-20 12:17:00,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 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 12:17:00,241 INFO L413 NwaCegarLoop]: 3010 mSDtfsCounter, 2267 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 5510 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:00,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 5510 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 12:17:00,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12709 states. [2022-11-20 12:17:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12709 to 12677. [2022-11-20 12:17:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12677 states, 8528 states have (on average 1.2562148217636022) internal successors, (10713), 8702 states have internal predecessors, (10713), 3359 states have call successors, (3359), 796 states have call predecessors, (3359), 787 states have return successors, (3389), 3296 states have call predecessors, (3389), 3355 states have call successors, (3389) [2022-11-20 12:17:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12677 states to 12677 states and 17461 transitions. [2022-11-20 12:17:01,321 INFO L78 Accepts]: Start accepts. Automaton has 12677 states and 17461 transitions. Word has length 158 [2022-11-20 12:17:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:01,322 INFO L495 AbstractCegarLoop]: Abstraction has 12677 states and 17461 transitions. [2022-11-20 12:17:01,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:17:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12677 states and 17461 transitions. [2022-11-20 12:17:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-20 12:17:01,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:01,332 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:01,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:01,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:01,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:17:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1648270658, now seen corresponding path program 1 times [2022-11-20 12:17:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:01,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692674004] [2022-11-20 12:17:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:01,550 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 12:17:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:01,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:01,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:17:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:03,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:17:03,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-11-20 12:17:03,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:03,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:03,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692674004] [2022-11-20 12:17:03,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692674004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:03,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:03,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:17:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234702921] [2022-11-20 12:17:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:17:03,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:17:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:17:03,289 INFO L87 Difference]: Start difference. First operand 12677 states and 17461 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 12:17:05,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:17:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:06,510 INFO L93 Difference]: Finished difference Result 22737 states and 31294 transitions. [2022-11-20 12:17:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:17:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 212 [2022-11-20 12:17:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:06,602 INFO L225 Difference]: With dead ends: 22737 [2022-11-20 12:17:06,602 INFO L226 Difference]: Without dead ends: 10087 [2022-11-20 12:17:06,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 210 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 12:17:06,669 INFO L413 NwaCegarLoop]: 3401 mSDtfsCounter, 1613 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 5891 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:06,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 5891 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 12:17:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10087 states. [2022-11-20 12:17:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10087 to 10055. [2022-11-20 12:17:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10055 states, 6795 states have (on average 1.25813097866078) internal successors, (8549), 6944 states have internal predecessors, (8549), 2594 states have call successors, (2594), 672 states have call predecessors, (2594), 663 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-20 12:17:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10055 states to 10055 states and 13750 transitions. [2022-11-20 12:17:07,327 INFO L78 Accepts]: Start accepts. Automaton has 10055 states and 13750 transitions. Word has length 212 [2022-11-20 12:17:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:07,328 INFO L495 AbstractCegarLoop]: Abstraction has 10055 states and 13750 transitions. [2022-11-20 12:17:07,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 12:17:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 10055 states and 13750 transitions. [2022-11-20 12:17:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-20 12:17:07,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:07,334 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 11, 11, 11, 11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:07,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:07,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:07,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:17:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:07,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2120990657, now seen corresponding path program 1 times [2022-11-20 12:17:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:07,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892576415] [2022-11-20 12:17:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:07,549 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 12:17:07,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:07,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:07,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:17:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:08,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:17:08,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-20 12:17:09,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:09,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892576415] [2022-11-20 12:17:09,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892576415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:09,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:09,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:17:09,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044346587] [2022-11-20 12:17:09,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:09,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:17:09,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:17:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:17:09,810 INFO L87 Difference]: Start difference. First operand 10055 states and 13750 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:17:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:11,127 INFO L93 Difference]: Finished difference Result 29060 states and 39772 transitions. [2022-11-20 12:17:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:17:11,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 198 [2022-11-20 12:17:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:11,258 INFO L225 Difference]: With dead ends: 29060 [2022-11-20 12:17:11,258 INFO L226 Difference]: Without dead ends: 19192 [2022-11-20 12:17:11,305 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 12:17:11,306 INFO L413 NwaCegarLoop]: 3046 mSDtfsCounter, 2352 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 5564 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:11,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 5564 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:17:11,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19192 states. [2022-11-20 12:17:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19192 to 19166. [2022-11-20 12:17:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19166 states, 12997 states have (on average 1.2582903747018543) internal successors, (16354), 13289 states have internal predecessors, (16354), 4878 states have call successors, (4878), 1317 states have call predecessors, (4878), 1288 states have return successors, (4936), 4741 states have call predecessors, (4936), 4874 states have call successors, (4936) [2022-11-20 12:17:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19166 states to 19166 states and 26168 transitions. [2022-11-20 12:17:13,088 INFO L78 Accepts]: Start accepts. Automaton has 19166 states and 26168 transitions. Word has length 198 [2022-11-20 12:17:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:13,089 INFO L495 AbstractCegarLoop]: Abstraction has 19166 states and 26168 transitions. [2022-11-20 12:17:13,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 12:17:13,089 INFO L276 IsEmpty]: Start isEmpty. Operand 19166 states and 26168 transitions. [2022-11-20 12:17:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-20 12:17:13,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:13,094 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:13,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:13,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:13,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:17:13,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1641374081, now seen corresponding path program 1 times [2022-11-20 12:17:13,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:13,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601946991] [2022-11-20 12:17:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:13,324 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 12:17:13,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:13,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:13,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:17:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:15,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:17:15,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-11-20 12:17:15,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:15,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:15,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601946991] [2022-11-20 12:17:15,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601946991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:15,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:15,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:17:15,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358900391] [2022-11-20 12:17:15,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:17:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:17:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:17:15,177 INFO L87 Difference]: Start difference. First operand 19166 states and 26168 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 12:17:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:16,497 INFO L93 Difference]: Finished difference Result 38337 states and 52405 transitions. [2022-11-20 12:17:16,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:17:16,502 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), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 221 [2022-11-20 12:17:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:16,616 INFO L225 Difference]: With dead ends: 38337 [2022-11-20 12:17:16,616 INFO L226 Difference]: Without dead ends: 19358 [2022-11-20 12:17:16,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 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 12:17:16,684 INFO L413 NwaCegarLoop]: 2552 mSDtfsCounter, 16 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5100 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:16,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5100 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:17:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19358 states. [2022-11-20 12:17:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19358 to 19182. [2022-11-20 12:17:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19182 states, 13013 states have (on average 1.2579727964343348) internal successors, (16370), 13305 states have internal predecessors, (16370), 4878 states have call successors, (4878), 1317 states have call predecessors, (4878), 1288 states have return successors, (4936), 4741 states have call predecessors, (4936), 4874 states have call successors, (4936) [2022-11-20 12:17:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19182 states to 19182 states and 26184 transitions. [2022-11-20 12:17:18,263 INFO L78 Accepts]: Start accepts. Automaton has 19182 states and 26184 transitions. Word has length 221 [2022-11-20 12:17:18,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:18,264 INFO L495 AbstractCegarLoop]: Abstraction has 19182 states and 26184 transitions. [2022-11-20 12:17:18,265 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), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 12:17:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 19182 states and 26184 transitions. [2022-11-20 12:17:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 12:17:18,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:18,271 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:18,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:18,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:18,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:17:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash 307180696, now seen corresponding path program 1 times [2022-11-20 12:17:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:18,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553055572] [2022-11-20 12:17:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:18,491 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 12:17:18,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:18,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:18,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:17:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:20,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:17:20,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 232 proven. 1 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-11-20 12:17:20,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-11-20 12:17:20,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:20,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553055572] [2022-11-20 12:17:20,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553055572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:17:20,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:17:20,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 12:17:20,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164317918] [2022-11-20 12:17:20,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:17:20,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:17:20,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:17:20,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:17:20,500 INFO L87 Difference]: Start difference. First operand 19182 states and 26184 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:17:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:22,033 INFO L93 Difference]: Finished difference Result 38545 states and 52725 transitions. [2022-11-20 12:17:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:17:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 225 [2022-11-20 12:17:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:22,154 INFO L225 Difference]: With dead ends: 38545 [2022-11-20 12:17:22,154 INFO L226 Difference]: Without dead ends: 19550 [2022-11-20 12:17:22,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:17:22,230 INFO L413 NwaCegarLoop]: 2563 mSDtfsCounter, 47 mSDsluCounter, 10183 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 12746 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:22,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 12746 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:17:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19550 states. [2022-11-20 12:17:23,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19550 to 19374. [2022-11-20 12:17:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19374 states, 13189 states have (on average 1.261809083327015) internal successors, (16642), 13481 states have internal predecessors, (16642), 4894 states have call successors, (4894), 1317 states have call predecessors, (4894), 1288 states have return successors, (4952), 4757 states have call predecessors, (4952), 4890 states have call successors, (4952) [2022-11-20 12:17:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19374 states to 19374 states and 26488 transitions. [2022-11-20 12:17:23,878 INFO L78 Accepts]: Start accepts. Automaton has 19374 states and 26488 transitions. Word has length 225 [2022-11-20 12:17:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:23,879 INFO L495 AbstractCegarLoop]: Abstraction has 19374 states and 26488 transitions. [2022-11-20 12:17:23,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:17:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 19374 states and 26488 transitions. [2022-11-20 12:17:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-20 12:17:23,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:23,886 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 2, 2, 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] [2022-11-20 12:17:23,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:24,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:24,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:17:24,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash 395908657, now seen corresponding path program 2 times [2022-11-20 12:17:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:24,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053969180] [2022-11-20 12:17:24,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:17:24,113 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 12:17:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:24,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:24,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:17:25,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:17:25,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:17:25,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:17:25,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-11-20 12:17:26,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:26,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:26,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053969180] [2022-11-20 12:17:26,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053969180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:26,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:26,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:17:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266361281] [2022-11-20 12:17:26,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:26,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:17:26,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:26,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:17:26,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:17:26,713 INFO L87 Difference]: Start difference. First operand 19374 states and 26488 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-20 12:17:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:28,232 INFO L93 Difference]: Finished difference Result 19380 states and 26493 transitions. [2022-11-20 12:17:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:17:28,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 229 [2022-11-20 12:17:28,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:28,360 INFO L225 Difference]: With dead ends: 19380 [2022-11-20 12:17:28,361 INFO L226 Difference]: Without dead ends: 19378 [2022-11-20 12:17:28,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:17:28,374 INFO L413 NwaCegarLoop]: 2556 mSDtfsCounter, 2460 mSDsluCounter, 5099 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 7655 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:28,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2461 Valid, 7655 Invalid, 21 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:17:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19378 states. [2022-11-20 12:17:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19378 to 19378. [2022-11-20 12:17:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19378 states, 13192 states have (on average 1.2617495451788963) internal successors, (16645), 13484 states have internal predecessors, (16645), 4894 states have call successors, (4894), 1318 states have call predecessors, (4894), 1289 states have return successors, (4952), 4757 states have call predecessors, (4952), 4890 states have call successors, (4952) [2022-11-20 12:17:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19378 states to 19378 states and 26491 transitions. [2022-11-20 12:17:29,822 INFO L78 Accepts]: Start accepts. Automaton has 19378 states and 26491 transitions. Word has length 229 [2022-11-20 12:17:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:29,823 INFO L495 AbstractCegarLoop]: Abstraction has 19378 states and 26491 transitions. [2022-11-20 12:17:29,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-20 12:17:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 19378 states and 26491 transitions. [2022-11-20 12:17:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:17:29,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:29,828 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 2, 2, 2, 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] [2022-11-20 12:17:29,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:30,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:30,042 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:17:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1712433798, now seen corresponding path program 1 times [2022-11-20 12:17:30,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:30,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848281553] [2022-11-20 12:17:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:30,045 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 12:17:30,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:30,046 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:30,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:17:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:31,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:17:31,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2022-11-20 12:17:31,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:31,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:31,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848281553] [2022-11-20 12:17:31,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848281553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:31,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:31,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:17:31,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461082612] [2022-11-20 12:17:31,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:31,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:17:31,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:31,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:17:31,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:17:31,914 INFO L87 Difference]: Start difference. First operand 19378 states and 26491 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:17:34,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:17:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:36,561 INFO L93 Difference]: Finished difference Result 55862 states and 76415 transitions. [2022-11-20 12:17:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:17:36,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 234 [2022-11-20 12:17:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:36,732 INFO L225 Difference]: With dead ends: 55862 [2022-11-20 12:17:36,733 INFO L226 Difference]: Without dead ends: 36671 [2022-11-20 12:17:36,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 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 12:17:36,814 INFO L413 NwaCegarLoop]: 3266 mSDtfsCounter, 2360 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 5798 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:36,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 5798 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 12:17:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36671 states. [2022-11-20 12:17:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36671 to 36667. [2022-11-20 12:17:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36667 states, 24925 states have (on average 1.2590170511534604) internal successors, (31381), 25427 states have internal predecessors, (31381), 9296 states have call successors, (9296), 2492 states have call predecessors, (9296), 2443 states have return successors, (9416), 9087 states have call predecessors, (9416), 9292 states have call successors, (9416) [2022-11-20 12:17:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36667 states to 36667 states and 50093 transitions. [2022-11-20 12:17:39,973 INFO L78 Accepts]: Start accepts. Automaton has 36667 states and 50093 transitions. Word has length 234 [2022-11-20 12:17:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:39,974 INFO L495 AbstractCegarLoop]: Abstraction has 36667 states and 50093 transitions. [2022-11-20 12:17:39,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:17:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 36667 states and 50093 transitions. [2022-11-20 12:17:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:17:39,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:39,978 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 2, 2, 2, 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] [2022-11-20 12:17:40,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-20 12:17:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:40,179 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:17:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1735066052, now seen corresponding path program 1 times [2022-11-20 12:17:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:40,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638719543] [2022-11-20 12:17:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:40,182 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 12:17:40,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:40,183 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:40,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:17:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:41,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:17:41,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-11-20 12:17:43,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-11-20 12:17:43,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:43,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638719543] [2022-11-20 12:17:43,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638719543] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:17:43,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:17:43,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 12:17:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118583780] [2022-11-20 12:17:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:43,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:17:43,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:43,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:17:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:17:43,767 INFO L87 Difference]: Start difference. First operand 36667 states and 50093 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 12:17:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:46,764 INFO L93 Difference]: Finished difference Result 36673 states and 50098 transitions. [2022-11-20 12:17:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:17:46,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 234 [2022-11-20 12:17:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:46,892 INFO L225 Difference]: With dead ends: 36673 [2022-11-20 12:17:46,892 INFO L226 Difference]: Without dead ends: 36671 [2022-11-20 12:17:46,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:17:46,906 INFO L413 NwaCegarLoop]: 2559 mSDtfsCounter, 2480 mSDsluCounter, 5098 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2491 SdHoareTripleChecker+Valid, 7657 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:46,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2491 Valid, 7657 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:17:46,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36671 states. [2022-11-20 12:17:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36671 to 36671. [2022-11-20 12:17:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36671 states, 24928 states have (on average 1.2589858793324775) internal successors, (31384), 25430 states have internal predecessors, (31384), 9296 states have call successors, (9296), 2493 states have call predecessors, (9296), 2444 states have return successors, (9416), 9087 states have call predecessors, (9416), 9292 states have call successors, (9416) [2022-11-20 12:17:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36671 states to 36671 states and 50096 transitions. [2022-11-20 12:17:50,341 INFO L78 Accepts]: Start accepts. Automaton has 36671 states and 50096 transitions. Word has length 234 [2022-11-20 12:17:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:50,342 INFO L495 AbstractCegarLoop]: Abstraction has 36671 states and 50096 transitions. [2022-11-20 12:17:50,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-20 12:17:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 36671 states and 50096 transitions. [2022-11-20 12:17:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 12:17:50,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:50,348 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 3, 2, 2, 2, 2, 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] [2022-11-20 12:17:50,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:50,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:17:50,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 12:17:50,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:50,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1320163987, now seen corresponding path program 1 times [2022-11-20 12:17:50,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:17:50,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899371708] [2022-11-20 12:17:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:50,565 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 12:17:50,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:17:50,567 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:17:50,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd96c343-9ee7-46b6-a2cf-eb9e585104e7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:17:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:52,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:17:52,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-11-20 12:17:53,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-11-20 12:17:54,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:54,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899371708] [2022-11-20 12:17:54,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899371708] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:17:54,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:17:54,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-20 12:17:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096480769] [2022-11-20 12:17:54,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:54,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:17:54,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:54,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:17:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:17:54,386 INFO L87 Difference]: Start difference. First operand 36671 states and 50096 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23)