./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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_9e03e185-8f3f-4d73-99be-16b7a3520771/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 2c6afaf5bedcc2af934f5b2a4cc6fb91099717aaf97d30d9787d5c01855a1a43 --- 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 11:28:46,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:28:46,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:28:46,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:28:46,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:28:46,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:28:46,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:28:46,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:28:46,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:28:46,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:28:46,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:28:46,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:28:46,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:28:46,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:28:46,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:28:46,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:28:46,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:28:46,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:28:46,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:28:46,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:28:46,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:28:46,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:28:46,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:28:46,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:28:46,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:28:46,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:28:46,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:28:46,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:28:46,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:28:46,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:28:46,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:28:46,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:28:46,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:28:46,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:28:46,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:28:46,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:28:46,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:28:46,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:28:46,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:28:46,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:28:46,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:28:46,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:28:46,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:28:46,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:28:46,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:28:46,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:28:46,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:28:46,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:28:46,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:28:46,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:28:46,686 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:28:46,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:28:46,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:28:46,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:28:46,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:28:46,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:28:46,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:28:46,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:28:46,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:28:46,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:28:46,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:28:46,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:28:46,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:28:46,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:28:46,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:28:46,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:28:46,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:28:46,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:28:46,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:28:46,694 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:28:46,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:28:46,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:28:46,696 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_9e03e185-8f3f-4d73-99be-16b7a3520771/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6afaf5bedcc2af934f5b2a4cc6fb91099717aaf97d30d9787d5c01855a1a43 [2022-11-20 11:28:46,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:28:47,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:28:47,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:28:47,015 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:28:47,016 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:28:47,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2022-11-20 11:28:50,253 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:28:50,991 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:28:50,991 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2022-11-20 11:28:51,050 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/data/f51a68970/f14f0d1ae26041d5af2a518ad427c6a5/FLAG9c11a69fc [2022-11-20 11:28:51,067 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/data/f51a68970/f14f0d1ae26041d5af2a518ad427c6a5 [2022-11-20 11:28:51,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:28:51,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:28:51,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:28:51,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:28:51,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:28:51,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:28:51" (1/1) ... [2022-11-20 11:28:51,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bed178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:51, skipping insertion in model container [2022-11-20 11:28:51,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:28:51" (1/1) ... [2022-11-20 11:28:51,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:28:51,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:28:51,831 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 11:28:51,840 INFO L158 Benchmark]: Toolchain (without parser) took 767.40ms. Allocated memory is still 157.3MB. Free memory was 117.7MB in the beginning and 86.7MB in the end (delta: 31.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 11:28:51,841 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:28:51,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 765.08ms. Allocated memory is still 157.3MB. Free memory was 117.7MB in the beginning and 86.7MB in the end (delta: 31.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 11:28:51,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 765.08ms. Allocated memory is still 157.3MB. Free memory was 117.7MB in the beginning and 86.7MB in the end (delta: 31.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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_9e03e185-8f3f-4d73-99be-16b7a3520771/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 2c6afaf5bedcc2af934f5b2a4cc6fb91099717aaf97d30d9787d5c01855a1a43 --- 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 11:28:54,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:28:54,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:28:54,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:28:54,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:28:54,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:28:54,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:28:54,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:28:54,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:28:54,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:28:54,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:28:54,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:28:54,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:28:54,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:28:54,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:28:54,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:28:54,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:28:54,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:28:54,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:28:54,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:28:54,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:28:54,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:28:54,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:28:54,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:28:54,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:28:54,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:28:54,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:28:54,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:28:54,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:28:54,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:28:54,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:28:54,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:28:54,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:28:54,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:28:54,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:28:54,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:28:54,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:28:54,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:28:54,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:28:54,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:28:54,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:28:54,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 11:28:54,613 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:28:54,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:28:54,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:28:54,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:28:54,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:28:54,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:28:54,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:28:54,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:28:54,616 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:28:54,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:28:54,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:28:54,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:28:54,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:28:54,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:28:54,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:28:54,618 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:28:54,618 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:28:54,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:28:54,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:28:54,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:28:54,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:28:54,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:28:54,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:28:54,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:28:54,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:28:54,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:28:54,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:28:54,621 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:28:54,621 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:28:54,621 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:28:54,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:28:54,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:28:54,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:28:54,622 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_9e03e185-8f3f-4d73-99be-16b7a3520771/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6afaf5bedcc2af934f5b2a4cc6fb91099717aaf97d30d9787d5c01855a1a43 [2022-11-20 11:28:54,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:28:54,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:28:54,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:28:54,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:28:54,974 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:28:54,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2022-11-20 11:28:58,282 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:28:58,957 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:28:58,958 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2022-11-20 11:28:59,012 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/data/ec7e830e2/f956285608ce4a38bd168f6275799742/FLAGb8e6fe2d6 [2022-11-20 11:28:59,037 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/data/ec7e830e2/f956285608ce4a38bd168f6275799742 [2022-11-20 11:28:59,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:28:59,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:28:59,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:28:59,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:28:59,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:28:59,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:28:59" (1/1) ... [2022-11-20 11:28:59,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61372113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:28:59, skipping insertion in model container [2022-11-20 11:28:59,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:28:59" (1/1) ... [2022-11-20 11:28:59,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:28:59,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:29:01,208 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193323,193336] [2022-11-20 11:29:01,212 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193489,193502] [2022-11-20 11:29:01,213 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193653,193666] [2022-11-20 11:29:01,214 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193818,193831] [2022-11-20 11:29:01,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:01,280 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:29:01,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:29:01,602 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193323,193336] [2022-11-20 11:29:01,603 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193489,193502] [2022-11-20 11:29:01,604 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193653,193666] [2022-11-20 11:29:01,604 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193818,193831] [2022-11-20 11:29:01,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:01,637 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:29:01,927 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193323,193336] [2022-11-20 11:29:01,928 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193489,193502] [2022-11-20 11:29:01,928 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193653,193666] [2022-11-20 11:29:01,930 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_9e03e185-8f3f-4d73-99be-16b7a3520771/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193818,193831] [2022-11-20 11:29:01,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:02,060 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:29:02,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02 WrapperNode [2022-11-20 11:29:02,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:02,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:29:02,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:29:02,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:29:02,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,343 INFO L138 Inliner]: procedures = 246, calls = 1015, calls flagged for inlining = 130, calls inlined = 118, statements flattened = 2919 [2022-11-20 11:29:02,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:29:02,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:29:02,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:29:02,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:29:02,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:29:02,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:29:02,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:29:02,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:29:02,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (1/1) ... [2022-11-20 11:29:02,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:29:02,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:02,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:29:02,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:29:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2022-11-20 11:29:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2022-11-20 11:29:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 11:29:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 11:29:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:29:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 11:29:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 11:29:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-20 11:29:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-20 11:29:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-11-20 11:29:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-11-20 11:29:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:29:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:29:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2022-11-20 11:29:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2022-11-20 11:29:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure copy_strings_kernel [2022-11-20 11:29:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_strings_kernel [2022-11-20 11:29:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2022-11-20 11:29:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2022-11-20 11:29:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:29:02,817 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:29:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-20 11:29:02,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-20 11:29:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:29:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure kill_node [2022-11-20 11:29:02,818 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_node [2022-11-20 11:29:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2022-11-20 11:29:02,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2022-11-20 11:29:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:29:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 11:29:02,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 11:29:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure allow_write_access [2022-11-20 11:29:02,820 INFO L138 BoogieDeclarations]: Found implementation of procedure allow_write_access [2022-11-20 11:29:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 11:29:02,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 11:29:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-20 11:29:02,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-20 11:29:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_misc_binfmt_7_2 [2022-11-20 11:29:02,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_misc_binfmt_7_2 [2022-11-20 11:29:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 11:29:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 11:29:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 11:29:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:29:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:29:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:29:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure bm_evict_inode [2022-11-20 11:29:02,823 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_evict_inode [2022-11-20 11:29:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure kill_litter_super [2022-11-20 11:29:02,824 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_litter_super [2022-11-20 11:29:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:29:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 11:29:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 11:29:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure simple_read_from_buffer [2022-11-20 11:29:02,825 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_read_from_buffer [2022-11-20 11:29:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 11:29:02,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 11:29:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 11:29:02,825 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 11:29:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 11:29:02,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 11:29:02,826 INFO L130 BoogieDeclarations]: Found specification of procedure parse_command [2022-11-20 11:29:02,826 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_command [2022-11-20 11:29:02,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-20 11:29:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-20 11:29:02,828 INFO L130 BoogieDeclarations]: Found specification of procedure bm_register_write [2022-11-20 11:29:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_register_write [2022-11-20 11:29:02,828 INFO L130 BoogieDeclarations]: Found specification of procedure bm_entry_read [2022-11-20 11:29:02,829 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_entry_read [2022-11-20 11:29:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 11:29:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 11:29:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 11:29:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 11:29:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure bm_status_write [2022-11-20 11:29:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_status_write [2022-11-20 11:29:02,832 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:29:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:29:02,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-20 11:29:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-20 11:29:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:29:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-20 11:29:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure scanarg [2022-11-20 11:29:02,835 INFO L138 BoogieDeclarations]: Found implementation of procedure scanarg [2022-11-20 11:29:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:29:02,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:29:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:29:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 11:29:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 11:29:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-20 11:29:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 11:29:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 11:29:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-20 11:29:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-20 11:29:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-11-20 11:29:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-11-20 11:29:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-20 11:29:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-20 11:29:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure bm_entry_write [2022-11-20 11:29:02,839 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_entry_write [2022-11-20 11:29:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:29:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 11:29:02,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 11:29:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:29:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure string_unescape_inplace [2022-11-20 11:29:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure string_unescape_inplace [2022-11-20 11:29:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-20 11:29:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-20 11:29:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-20 11:29:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-20 11:29:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure bm_status_read [2022-11-20 11:29:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_status_read [2022-11-20 11:29:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 11:29:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 11:29:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 11:29:02,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 11:29:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:29:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:29:02,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2022-11-20 11:29:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2022-11-20 11:29:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 11:29:02,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 11:29:03,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:29:03,669 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:29:04,064 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 11:29:11,585 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 11:29:11,682 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:29:11,699 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:29:11,700 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:29:11,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:29:11 BoogieIcfgContainer [2022-11-20 11:29:11,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:29:11,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:29:11,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:29:11,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:29:11,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:28:59" (1/3) ... [2022-11-20 11:29:11,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48903563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:29:11, skipping insertion in model container [2022-11-20 11:29:11,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:02" (2/3) ... [2022-11-20 11:29:11,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48903563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:29:11, skipping insertion in model container [2022-11-20 11:29:11,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:29:11" (3/3) ... [2022-11-20 11:29:11,714 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2022-11-20 11:29:11,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:29:11,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 11:29:11,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:29:11,842 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;@639b14a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:29:11,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:29:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 1000 states, 710 states have (on average 1.3070422535211268) internal successors, (928), 717 states have internal predecessors, (928), 238 states have call successors, (238), 50 states have call predecessors, (238), 49 states have return successors, (231), 231 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-20 11:29:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-20 11:29:11,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:11,918 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:11,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:11,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1269960288, now seen corresponding path program 1 times [2022-11-20 11:29:11,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:11,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62159527] [2022-11-20 11:29:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:11,952 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 11:29:11,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:11,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:12,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:13,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:29:13,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2022-11-20 11:29:13,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:13,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:13,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62159527] [2022-11-20 11:29:13,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62159527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:13,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:13,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:13,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014325539] [2022-11-20 11:29:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:13,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:13,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:13,419 INFO L87 Difference]: Start difference. First operand has 1000 states, 710 states have (on average 1.3070422535211268) internal successors, (928), 717 states have internal predecessors, (928), 238 states have call successors, (238), 50 states have call predecessors, (238), 49 states have return successors, (231), 231 states have call predecessors, (231), 231 states have call successors, (231) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 11:29:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:13,834 INFO L93 Difference]: Finished difference Result 2789 states and 3939 transitions. [2022-11-20 11:29:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:13,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 294 [2022-11-20 11:29:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:13,863 INFO L225 Difference]: With dead ends: 2789 [2022-11-20 11:29:13,864 INFO L226 Difference]: Without dead ends: 1831 [2022-11-20 11:29:13,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 292 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 11:29:13,878 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1211 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:13,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 2905 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:13,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-11-20 11:29:14,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1827. [2022-11-20 11:29:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1317 states have (on average 1.308276385725133) internal successors, (1723), 1330 states have internal predecessors, (1723), 413 states have call successors, (413), 95 states have call predecessors, (413), 94 states have return successors, (409), 409 states have call predecessors, (409), 409 states have call successors, (409) [2022-11-20 11:29:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2545 transitions. [2022-11-20 11:29:14,202 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2545 transitions. Word has length 294 [2022-11-20 11:29:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:14,211 INFO L495 AbstractCegarLoop]: Abstraction has 1827 states and 2545 transitions. [2022-11-20 11:29:14,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 11:29:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2545 transitions. [2022-11-20 11:29:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-20 11:29:14,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:14,236 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:14,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:14,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:14,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2054426599, now seen corresponding path program 1 times [2022-11-20 11:29:14,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:14,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510720610] [2022-11-20 11:29:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:14,466 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 11:29:14,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:14,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:14,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:15,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:29:15,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2535 trivial. 0 not checked. [2022-11-20 11:29:16,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:16,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:16,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510720610] [2022-11-20 11:29:16,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510720610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:16,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:16,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060126108] [2022-11-20 11:29:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:16,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:16,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:16,022 INFO L87 Difference]: Start difference. First operand 1827 states and 2545 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 11:29:16,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:16,568 INFO L93 Difference]: Finished difference Result 4405 states and 6103 transitions. [2022-11-20 11:29:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:16,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 363 [2022-11-20 11:29:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:16,588 INFO L225 Difference]: With dead ends: 4405 [2022-11-20 11:29:16,588 INFO L226 Difference]: Without dead ends: 2631 [2022-11-20 11:29:16,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 361 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 11:29:16,597 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1155 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:16,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 2873 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:29:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-11-20 11:29:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2609. [2022-11-20 11:29:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 1903 states have (on average 1.303205465055176) internal successors, (2480), 1925 states have internal predecessors, (2480), 559 states have call successors, (559), 145 states have call predecessors, (559), 144 states have return successors, (555), 550 states have call predecessors, (555), 555 states have call successors, (555) [2022-11-20 11:29:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 3594 transitions. [2022-11-20 11:29:16,805 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 3594 transitions. Word has length 363 [2022-11-20 11:29:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:16,806 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 3594 transitions. [2022-11-20 11:29:16,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 11:29:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 3594 transitions. [2022-11-20 11:29:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-20 11:29:16,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:16,818 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:16,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:17,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:17,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash 410996868, now seen corresponding path program 1 times [2022-11-20 11:29:17,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:17,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916294491] [2022-11-20 11:29:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:17,055 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 11:29:17,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:17,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:17,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:18,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:29:18,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2591 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2519 trivial. 0 not checked. [2022-11-20 11:29:18,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:18,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:18,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916294491] [2022-11-20 11:29:18,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916294491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:18,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:18,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:18,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132888218] [2022-11-20 11:29:18,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:18,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:18,396 INFO L87 Difference]: Start difference. First operand 2609 states and 3594 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-20 11:29:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:18,925 INFO L93 Difference]: Finished difference Result 6206 states and 8457 transitions. [2022-11-20 11:29:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:18,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 360 [2022-11-20 11:29:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:18,951 INFO L225 Difference]: With dead ends: 6206 [2022-11-20 11:29:18,952 INFO L226 Difference]: Without dead ends: 3650 [2022-11-20 11:29:18,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 358 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 11:29:18,967 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 914 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:18,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 2918 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2022-11-20 11:29:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3630. [2022-11-20 11:29:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 2661 states have (on average 1.2848553175497932) internal successors, (3419), 2694 states have internal predecessors, (3419), 738 states have call successors, (738), 229 states have call predecessors, (738), 228 states have return successors, (734), 719 states have call predecessors, (734), 734 states have call successors, (734) [2022-11-20 11:29:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 4891 transitions. [2022-11-20 11:29:19,213 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 4891 transitions. Word has length 360 [2022-11-20 11:29:19,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:19,214 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 4891 transitions. [2022-11-20 11:29:19,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-20 11:29:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 4891 transitions. [2022-11-20 11:29:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-20 11:29:19,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:19,224 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:19,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:19,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:19,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:19,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2013200339, now seen corresponding path program 1 times [2022-11-20 11:29:19,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:19,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974440707] [2022-11-20 11:29:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:19,439 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 11:29:19,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:19,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:19,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:20,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:29:20,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2826 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 2721 trivial. 0 not checked. [2022-11-20 11:29:20,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:20,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:20,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974440707] [2022-11-20 11:29:20,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974440707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:20,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:20,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:20,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913510118] [2022-11-20 11:29:20,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:20,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:20,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:20,747 INFO L87 Difference]: Start difference. First operand 3630 states and 4891 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 11:29:21,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:21,451 INFO L93 Difference]: Finished difference Result 9456 states and 12800 transitions. [2022-11-20 11:29:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:21,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 354 [2022-11-20 11:29:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:21,492 INFO L225 Difference]: With dead ends: 9456 [2022-11-20 11:29:21,492 INFO L226 Difference]: Without dead ends: 6386 [2022-11-20 11:29:21,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 352 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 11:29:21,506 INFO L413 NwaCegarLoop]: 2537 mSDtfsCounter, 1168 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:21,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 3873 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2022-11-20 11:29:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 6382. [2022-11-20 11:29:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6382 states, 4696 states have (on average 1.2896081771720613) internal successors, (6056), 4741 states have internal predecessors, (6056), 1281 states have call successors, (1281), 403 states have call predecessors, (1281), 402 states have return successors, (1277), 1262 states have call predecessors, (1277), 1277 states have call successors, (1277) [2022-11-20 11:29:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 8614 transitions. [2022-11-20 11:29:22,046 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 8614 transitions. Word has length 354 [2022-11-20 11:29:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:22,047 INFO L495 AbstractCegarLoop]: Abstraction has 6382 states and 8614 transitions. [2022-11-20 11:29:22,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 11:29:22,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 8614 transitions. [2022-11-20 11:29:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-20 11:29:22,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:22,059 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:22,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:22,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:22,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash -89972305, now seen corresponding path program 1 times [2022-11-20 11:29:22,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:22,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964986287] [2022-11-20 11:29:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:22,287 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 11:29:22,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:22,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:22,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:23,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:29:23,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2826 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2826 trivial. 0 not checked. [2022-11-20 11:29:24,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:24,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:24,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964986287] [2022-11-20 11:29:24,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964986287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:24,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:24,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:29:24,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339391395] [2022-11-20 11:29:24,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:24,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:29:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:29:24,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:29:24,605 INFO L87 Difference]: Start difference. First operand 6382 states and 8614 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2022-11-20 11:29:25,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:25,250 INFO L93 Difference]: Finished difference Result 6591 states and 8821 transitions. [2022-11-20 11:29:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:29:25,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 354 [2022-11-20 11:29:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:25,286 INFO L225 Difference]: With dead ends: 6591 [2022-11-20 11:29:25,286 INFO L226 Difference]: Without dead ends: 6589 [2022-11-20 11:29:25,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 350 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 11:29:25,291 INFO L413 NwaCegarLoop]: 1376 mSDtfsCounter, 1137 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 4273 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:25,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 4273 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2022-11-20 11:29:25,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 6589. [2022-11-20 11:29:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6589 states, 4829 states have (on average 1.2832884655208117) internal successors, (6197), 4874 states have internal predecessors, (6197), 1313 states have call successors, (1313), 445 states have call predecessors, (1313), 444 states have return successors, (1309), 1294 states have call predecessors, (1309), 1309 states have call successors, (1309) [2022-11-20 11:29:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6589 states to 6589 states and 8819 transitions. [2022-11-20 11:29:25,815 INFO L78 Accepts]: Start accepts. Automaton has 6589 states and 8819 transitions. Word has length 354 [2022-11-20 11:29:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:25,817 INFO L495 AbstractCegarLoop]: Abstraction has 6589 states and 8819 transitions. [2022-11-20 11:29:25,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2022-11-20 11:29:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6589 states and 8819 transitions. [2022-11-20 11:29:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-20 11:29:25,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:25,828 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:25,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:26,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:26,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash 687480480, now seen corresponding path program 1 times [2022-11-20 11:29:26,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:26,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148452889] [2022-11-20 11:29:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:26,046 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 11:29:26,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:26,052 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:26,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:29:27,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2535 trivial. 0 not checked. [2022-11-20 11:29:27,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:27,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:27,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148452889] [2022-11-20 11:29:27,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148452889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:27,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:27,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507388752] [2022-11-20 11:29:27,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:27,231 INFO L87 Difference]: Start difference. First operand 6589 states and 8819 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-20 11:29:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:28,268 INFO L93 Difference]: Finished difference Result 17877 states and 23891 transitions. [2022-11-20 11:29:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:28,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 366 [2022-11-20 11:29:28,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:28,341 INFO L225 Difference]: With dead ends: 17877 [2022-11-20 11:29:28,341 INFO L226 Difference]: Without dead ends: 11341 [2022-11-20 11:29:28,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 364 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 11:29:28,365 INFO L413 NwaCegarLoop]: 1682 mSDtfsCounter, 1155 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:28,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 3000 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2022-11-20 11:29:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11319. [2022-11-20 11:29:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11319 states, 8376 states have (on average 1.2794890162368673) internal successors, (10717), 8460 states have internal predecessors, (10717), 2163 states have call successors, (2163), 778 states have call predecessors, (2163), 777 states have return successors, (2159), 2124 states have call predecessors, (2159), 2159 states have call successors, (2159) [2022-11-20 11:29:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11319 states to 11319 states and 15039 transitions. [2022-11-20 11:29:29,262 INFO L78 Accepts]: Start accepts. Automaton has 11319 states and 15039 transitions. Word has length 366 [2022-11-20 11:29:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:29,263 INFO L495 AbstractCegarLoop]: Abstraction has 11319 states and 15039 transitions. [2022-11-20 11:29:29,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-20 11:29:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 11319 states and 15039 transitions. [2022-11-20 11:29:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-20 11:29:29,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:29,272 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:29,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:29,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:29,489 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:29,489 INFO L85 PathProgramCache]: Analyzing trace with hash 155522291, now seen corresponding path program 1 times [2022-11-20 11:29:29,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:29,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669937667] [2022-11-20 11:29:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:29,491 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 11:29:29,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:29,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:29,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:30,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:29:30,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2828 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2826 trivial. 0 not checked. [2022-11-20 11:29:31,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2828 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2826 trivial. 0 not checked. [2022-11-20 11:29:32,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:32,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669937667] [2022-11-20 11:29:32,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669937667] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:32,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:29:32,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:29:32,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57876105] [2022-11-20 11:29:32,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:32,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:29:32,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:29:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:29:32,150 INFO L87 Difference]: Start difference. First operand 11319 states and 15039 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:29:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:33,363 INFO L93 Difference]: Finished difference Result 11325 states and 15044 transitions. [2022-11-20 11:29:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:29:33,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 359 [2022-11-20 11:29:33,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:33,410 INFO L225 Difference]: With dead ends: 11325 [2022-11-20 11:29:33,410 INFO L226 Difference]: Without dead ends: 11321 [2022-11-20 11:29:33,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:29:33,417 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 1281 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 4097 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:33,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 4097 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:33,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11321 states. [2022-11-20 11:29:34,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11321 to 11321. [2022-11-20 11:29:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11321 states, 8378 states have (on average 1.2793029362616377) internal successors, (10718), 8461 states have internal predecessors, (10718), 2163 states have call successors, (2163), 779 states have call predecessors, (2163), 777 states have return successors, (2159), 2124 states have call predecessors, (2159), 2159 states have call successors, (2159) [2022-11-20 11:29:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11321 states to 11321 states and 15040 transitions. [2022-11-20 11:29:34,354 INFO L78 Accepts]: Start accepts. Automaton has 11321 states and 15040 transitions. Word has length 359 [2022-11-20 11:29:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:34,355 INFO L495 AbstractCegarLoop]: Abstraction has 11321 states and 15040 transitions. [2022-11-20 11:29:34,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-20 11:29:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 11321 states and 15040 transitions. [2022-11-20 11:29:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-20 11:29:34,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:34,360 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 24, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:34,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:34,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:34,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:34,573 INFO L85 PathProgramCache]: Analyzing trace with hash 352953327, now seen corresponding path program 1 times [2022-11-20 11:29:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:34,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946637751] [2022-11-20 11:29:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:34,574 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 11:29:34,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:34,575 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:34,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:35,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:29:35,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2834 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2830 trivial. 0 not checked. [2022-11-20 11:29:36,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2834 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2830 trivial. 0 not checked. [2022-11-20 11:29:37,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:37,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946637751] [2022-11-20 11:29:37,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946637751] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:37,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:29:37,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:29:37,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243851000] [2022-11-20 11:29:37,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:37,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:29:37,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:37,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:29:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:29:37,468 INFO L87 Difference]: Start difference. First operand 11321 states and 15040 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 11:29:38,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:38,506 INFO L93 Difference]: Finished difference Result 11321 states and 15040 transitions. [2022-11-20 11:29:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:29:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 364 [2022-11-20 11:29:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:38,560 INFO L225 Difference]: With dead ends: 11321 [2022-11-20 11:29:38,561 INFO L226 Difference]: Without dead ends: 11167 [2022-11-20 11:29:38,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:29:38,569 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 1277 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 4094 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:38,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 4094 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11167 states. [2022-11-20 11:29:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11167 to 11167. [2022-11-20 11:29:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11167 states, 8289 states have (on average 1.2794064422728917) internal successors, (10605), 8348 states have internal predecessors, (10605), 2109 states have call successors, (2109), 767 states have call predecessors, (2109), 767 states have return successors, (2109), 2095 states have call predecessors, (2109), 2109 states have call successors, (2109) [2022-11-20 11:29:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11167 states to 11167 states and 14823 transitions. [2022-11-20 11:29:39,700 INFO L78 Accepts]: Start accepts. Automaton has 11167 states and 14823 transitions. Word has length 364 [2022-11-20 11:29:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:39,701 INFO L495 AbstractCegarLoop]: Abstraction has 11167 states and 14823 transitions. [2022-11-20 11:29:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 11:29:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 11167 states and 14823 transitions. [2022-11-20 11:29:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-20 11:29:39,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:39,721 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 24, 24, 24, 24, 24, 24, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:39,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:39,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:39,938 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:39,938 INFO L85 PathProgramCache]: Analyzing trace with hash 339209330, now seen corresponding path program 1 times [2022-11-20 11:29:39,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:39,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256366304] [2022-11-20 11:29:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:39,940 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 11:29:39,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:39,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:39,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:41,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:29:41,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 2772 trivial. 0 not checked. [2022-11-20 11:29:41,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:41,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:41,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256366304] [2022-11-20 11:29:41,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256366304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:41,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:41,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:41,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368354432] [2022-11-20 11:29:41,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:41,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:41,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:41,377 INFO L87 Difference]: Start difference. First operand 11167 states and 14823 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-20 11:29:42,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:42,743 INFO L93 Difference]: Finished difference Result 27220 states and 36177 transitions. [2022-11-20 11:29:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:42,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 444 [2022-11-20 11:29:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:42,820 INFO L225 Difference]: With dead ends: 27220 [2022-11-20 11:29:42,820 INFO L226 Difference]: Without dead ends: 16027 [2022-11-20 11:29:42,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 442 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 11:29:42,859 INFO L413 NwaCegarLoop]: 2501 mSDtfsCounter, 1164 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 3807 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:42,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 3807 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:42,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16027 states. [2022-11-20 11:29:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16027 to 16023. [2022-11-20 11:29:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16023 states, 11870 states have (on average 1.2815501263689975) internal successors, (15212), 11951 states have internal predecessors, (15212), 3040 states have call successors, (3040), 1111 states have call predecessors, (3040), 1111 states have return successors, (3040), 3026 states have call predecessors, (3040), 3040 states have call successors, (3040) [2022-11-20 11:29:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16023 states to 16023 states and 21292 transitions. [2022-11-20 11:29:44,520 INFO L78 Accepts]: Start accepts. Automaton has 16023 states and 21292 transitions. Word has length 444 [2022-11-20 11:29:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:44,521 INFO L495 AbstractCegarLoop]: Abstraction has 16023 states and 21292 transitions. [2022-11-20 11:29:44,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-20 11:29:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 16023 states and 21292 transitions. [2022-11-20 11:29:44,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-20 11:29:44,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:44,548 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 24, 24, 24, 24, 24, 24, 10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:44,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:44,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:44,774 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:29:44,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:44,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1222727853, now seen corresponding path program 1 times [2022-11-20 11:29:44,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:44,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615936980] [2022-11-20 11:29:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:44,777 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 11:29:44,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:44,779 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:44,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:29:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:46,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:29:46,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3285 backedges. 558 proven. 3 refuted. 0 times theorem prover too weak. 2724 trivial. 0 not checked. [2022-11-20 11:29:46,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3285 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 3195 trivial. 0 not checked. [2022-11-20 11:29:47,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:47,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615936980] [2022-11-20 11:29:47,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615936980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:47,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:47,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 23 [2022-11-20 11:29:47,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209883481] [2022-11-20 11:29:47,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:47,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:29:47,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:47,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:29:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:29:47,929 INFO L87 Difference]: Start difference. First operand 16023 states and 21292 transitions. Second operand has 23 states, 22 states have (on average 7.863636363636363) internal successors, (173), 21 states have internal predecessors, (173), 6 states have call successors, (63), 3 states have call predecessors, (63), 8 states have return successors, (61), 7 states have call predecessors, (61), 6 states have call successors, (61) [2022-11-20 11:30:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:04,827 INFO L93 Difference]: Finished difference Result 46303 states and 62270 transitions. [2022-11-20 11:30:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:30:04,828 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.863636363636363) internal successors, (173), 21 states have internal predecessors, (173), 6 states have call successors, (63), 3 states have call predecessors, (63), 8 states have return successors, (61), 7 states have call predecessors, (61), 6 states have call successors, (61) Word has length 473 [2022-11-20 11:30:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:04,970 INFO L225 Difference]: With dead ends: 46303 [2022-11-20 11:30:04,970 INFO L226 Difference]: Without dead ends: 29974 [2022-11-20 11:30:05,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=250, Invalid=1556, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 11:30:05,021 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 7092 mSDsluCounter, 34323 mSDsCounter, 0 mSdLazyCounter, 5017 mSolverCounterSat, 1672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7240 SdHoareTripleChecker+Valid, 36776 SdHoareTripleChecker+Invalid, 6689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1672 IncrementalHoareTripleChecker+Valid, 5017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:05,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7240 Valid, 36776 Invalid, 6689 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1672 Valid, 5017 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-11-20 11:30:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29974 states. [2022-11-20 11:30:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29974 to 16189. [2022-11-20 11:30:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16189 states, 11995 states have (on average 1.2790329303876615) internal successors, (15342), 12076 states have internal predecessors, (15342), 3060 states have call successors, (3060), 1132 states have call predecessors, (3060), 1132 states have return successors, (3060), 3046 states have call predecessors, (3060), 3060 states have call successors, (3060) [2022-11-20 11:30:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16189 states to 16189 states and 21462 transitions. [2022-11-20 11:30:07,552 INFO L78 Accepts]: Start accepts. Automaton has 16189 states and 21462 transitions. Word has length 473 [2022-11-20 11:30:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:07,553 INFO L495 AbstractCegarLoop]: Abstraction has 16189 states and 21462 transitions. [2022-11-20 11:30:07,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.863636363636363) internal successors, (173), 21 states have internal predecessors, (173), 6 states have call successors, (63), 3 states have call predecessors, (63), 8 states have return successors, (61), 7 states have call predecessors, (61), 6 states have call successors, (61) [2022-11-20 11:30:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand 16189 states and 21462 transitions. [2022-11-20 11:30:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-20 11:30:07,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:07,571 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 24, 24, 24, 24, 24, 24, 11, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:07,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:07,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:07,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:30:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash 898055165, now seen corresponding path program 1 times [2022-11-20 11:30:07,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:07,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062817324] [2022-11-20 11:30:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:07,795 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 11:30:07,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:07,796 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:07,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:08,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:30:08,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3325 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 2996 trivial. 0 not checked. [2022-11-20 11:30:08,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:30:08,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:08,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062817324] [2022-11-20 11:30:08,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062817324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:08,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:08,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:30:08,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302569810] [2022-11-20 11:30:08,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:08,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:30:08,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:30:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:30:08,892 INFO L87 Difference]: Start difference. First operand 16189 states and 21462 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 11:30:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:10,954 INFO L93 Difference]: Finished difference Result 37216 states and 49367 transitions. [2022-11-20 11:30:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:30:10,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 483 [2022-11-20 11:30:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:11,040 INFO L225 Difference]: With dead ends: 37216 [2022-11-20 11:30:11,040 INFO L226 Difference]: Without dead ends: 21049 [2022-11-20 11:30:11,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 481 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 11:30:11,091 INFO L413 NwaCegarLoop]: 2489 mSDtfsCounter, 1162 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 3795 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:11,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 3795 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:30:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21049 states. [2022-11-20 11:30:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21049 to 16189. [2022-11-20 11:30:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16189 states, 11995 states have (on average 1.2789495623176323) internal successors, (15341), 12076 states have internal predecessors, (15341), 3060 states have call successors, (3060), 1132 states have call predecessors, (3060), 1132 states have return successors, (3060), 3046 states have call predecessors, (3060), 3060 states have call successors, (3060) [2022-11-20 11:30:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16189 states to 16189 states and 21461 transitions. [2022-11-20 11:30:12,790 INFO L78 Accepts]: Start accepts. Automaton has 16189 states and 21461 transitions. Word has length 483 [2022-11-20 11:30:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:12,791 INFO L495 AbstractCegarLoop]: Abstraction has 16189 states and 21461 transitions. [2022-11-20 11:30:12,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-20 11:30:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 16189 states and 21461 transitions. [2022-11-20 11:30:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-20 11:30:12,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:12,812 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 24, 24, 24, 24, 24, 24, 10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:12,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:13,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:13,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:30:13,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash 912777008, now seen corresponding path program 1 times [2022-11-20 11:30:13,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:13,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197999206] [2022-11-20 11:30:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:13,030 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 11:30:13,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:13,031 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:13,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 (13)] Waiting until timeout for monitored process [2022-11-20 11:30:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:14,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:30:14,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3285 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 3088 trivial. 0 not checked. [2022-11-20 11:30:14,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:30:14,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:14,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197999206] [2022-11-20 11:30:14,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197999206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:14,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:14,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:30:14,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249211914] [2022-11-20 11:30:14,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:14,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:30:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:30:14,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:30:14,212 INFO L87 Difference]: Start difference. First operand 16189 states and 21461 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-20 11:30:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:16,256 INFO L93 Difference]: Finished difference Result 38043 states and 50346 transitions. [2022-11-20 11:30:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:30:16,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 480 [2022-11-20 11:30:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:16,332 INFO L225 Difference]: With dead ends: 38043 [2022-11-20 11:30:16,333 INFO L226 Difference]: Without dead ends: 22173 [2022-11-20 11:30:16,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 478 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 11:30:16,374 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 883 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:16,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 3083 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:30:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22173 states. [2022-11-20 11:30:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22173 to 22165. [2022-11-20 11:30:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22165 states, 16481 states have (on average 1.2738911473818337) internal successors, (20995), 16588 states have internal predecessors, (20995), 4094 states have call successors, (4094), 1588 states have call predecessors, (4094), 1588 states have return successors, (4094), 4072 states have call predecessors, (4094), 4094 states have call successors, (4094) [2022-11-20 11:30:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22165 states to 22165 states and 29183 transitions. [2022-11-20 11:30:18,829 INFO L78 Accepts]: Start accepts. Automaton has 22165 states and 29183 transitions. Word has length 480 [2022-11-20 11:30:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:18,830 INFO L495 AbstractCegarLoop]: Abstraction has 22165 states and 29183 transitions. [2022-11-20 11:30:18,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-20 11:30:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 22165 states and 29183 transitions. [2022-11-20 11:30:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-20 11:30:18,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:18,845 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 24, 24, 24, 24, 24, 24, 11, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:18,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:19,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:19,059 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:30:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash -194580037, now seen corresponding path program 1 times [2022-11-20 11:30:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:19,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060193176] [2022-11-20 11:30:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:19,061 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 11:30:19,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:19,062 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:19,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 (14)] Waiting until timeout for monitored process [2022-11-20 11:30:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:20,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:30:20,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3325 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 3104 trivial. 0 not checked. [2022-11-20 11:30:20,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:30:20,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:20,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060193176] [2022-11-20 11:30:20,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060193176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:20,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:20,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:30:20,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593717038] [2022-11-20 11:30:20,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:20,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:30:20,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:20,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:30:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:30:20,366 INFO L87 Difference]: Start difference. First operand 22165 states and 29183 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-20 11:30:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:24,574 INFO L93 Difference]: Finished difference Result 53891 states and 70982 transitions. [2022-11-20 11:30:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:30:24,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 483 [2022-11-20 11:30:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:24,668 INFO L225 Difference]: With dead ends: 53891 [2022-11-20 11:30:24,668 INFO L226 Difference]: Without dead ends: 32045 [2022-11-20 11:30:24,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 481 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 11:30:24,722 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 1125 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:24,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 3119 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:30:24,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32045 states. [2022-11-20 11:30:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32045 to 32035. [2022-11-20 11:30:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32035 states, 23924 states have (on average 1.2725714763417488) internal successors, (30445), 24073 states have internal predecessors, (30445), 5798 states have call successors, (5798), 2311 states have call predecessors, (5798), 2311 states have return successors, (5798), 5764 states have call predecessors, (5798), 5798 states have call successors, (5798) [2022-11-20 11:30:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32035 states to 32035 states and 42041 transitions. [2022-11-20 11:30:28,402 INFO L78 Accepts]: Start accepts. Automaton has 32035 states and 42041 transitions. Word has length 483 [2022-11-20 11:30:28,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:28,403 INFO L495 AbstractCegarLoop]: Abstraction has 32035 states and 42041 transitions. [2022-11-20 11:30:28,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-20 11:30:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 32035 states and 42041 transitions. [2022-11-20 11:30:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-20 11:30:28,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:28,416 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 24, 24, 24, 24, 24, 24, 11, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:28,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:28,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:28,641 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:30:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2020605004, now seen corresponding path program 1 times [2022-11-20 11:30:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:28,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013810223] [2022-11-20 11:30:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:28,643 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 11:30:28,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:28,645 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 11:30:28,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e03e185-8f3f-4d73-99be-16b7a3520771/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 (15)] Waiting until timeout for monitored process [2022-11-20 11:30:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:30:30,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3325 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 3104 trivial. 0 not checked. [2022-11-20 11:30:30,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:30:30,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:30,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013810223] [2022-11-20 11:30:30,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013810223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:30,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:30,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:30:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434217779] [2022-11-20 11:30:30,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:30,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:30:30,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:30,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:30:30,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:30:30,191 INFO L87 Difference]: Start difference. First operand 32035 states and 42041 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46)