./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd --- 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-8393723 [2022-11-19 06:47:47,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:47:47,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:47:47,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:47:47,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:47:47,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:47:47,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:47:47,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:47:47,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:47:47,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:47:47,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:47:47,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:47:47,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:47:47,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:47:47,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:47:47,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:47:47,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:47:47,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:47:47,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:47:47,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:47:47,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:47:47,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:47:47,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:47:47,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:47:47,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:47:47,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:47:47,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:47:47,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:47:47,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:47:47,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:47:47,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:47:47,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:47:47,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:47:47,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:47:47,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:47:47,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:47:47,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:47:47,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:47:47,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:47:47,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:47:47,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:47:47,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:47:47,755 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:47:47,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:47:47,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:47:47,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:47:47,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:47:47,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:47:47,757 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:47:47,757 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:47:47,757 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:47:47,757 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:47:47,758 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:47:47,758 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:47:47,758 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:47:47,758 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:47:47,758 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:47:47,759 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:47:47,759 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:47:47,759 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:47:47,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:47:47,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:47:47,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:47:47,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:47:47,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:47:47,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:47:47,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:47:47,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:47:47,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:47:47,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:47:47,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:47:47,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:47:47,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:47:47,762 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:47:47,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:47:47,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:47:47,763 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:47:47,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:47:47,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:47:47,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:47:47,763 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_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd [2022-11-19 06:47:48,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:47:48,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:47:48,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:47:48,078 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:47:48,079 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:47:48,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-19 06:47:48,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data/e45ff9b61/eef3e1e1027941db99deb61472c38f2b/FLAGea9516700 [2022-11-19 06:47:49,102 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:47:49,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-19 06:47:49,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data/e45ff9b61/eef3e1e1027941db99deb61472c38f2b/FLAGea9516700 [2022-11-19 06:47:49,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data/e45ff9b61/eef3e1e1027941db99deb61472c38f2b [2022-11-19 06:47:49,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:47:49,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:47:49,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:47:49,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:47:49,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:47:49,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:47:49" (1/1) ... [2022-11-19 06:47:49,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331201e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:49, skipping insertion in model container [2022-11-19 06:47:49,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:47:49" (1/1) ... [2022-11-19 06:47:49,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:47:49,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:47:52,742 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-19 06:47:52,748 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-19 06:47:52,748 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-19 06:47:52,749 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-19 06:47:52,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:47:52,833 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:47:53,181 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-19 06:47:53,181 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-19 06:47:53,182 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-19 06:47:53,182 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-19 06:47:53,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:47:53,371 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:47:53,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53 WrapperNode [2022-11-19 06:47:53,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:47:53,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:47:53,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:47:53,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:47:53,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,702 INFO L138 Inliner]: procedures = 431, calls = 2260, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 4909 [2022-11-19 06:47:53,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:47:53,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:47:53,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:47:53,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:47:53,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,970 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:53,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:54,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:47:54,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:47:54,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:47:54,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:47:54,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (1/1) ... [2022-11-19 06:47:54,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:47:54,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:54,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:47:54,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:47:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_resume [2022-11-19 06:47:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_resume [2022-11-19 06:47:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 06:47:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 06:47:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:47:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:47:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 06:47:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 06:47:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_write_reg [2022-11-19 06:47:54,123 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_write_reg [2022-11-19 06:47:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:47:54,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:47:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2022-11-19 06:47:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2022-11-19 06:47:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read8 [2022-11-19 06:47:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read8 [2022-11-19 06:47:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:47:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:47:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:47:54,125 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:47:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2022-11-19 06:47:54,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2022-11-19 06:47:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-19 06:47:54,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-19 06:47:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_read_and_clear_stats [2022-11-19 06:47:54,126 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_read_and_clear_stats [2022-11-19 06:47:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_sync [2022-11-19 06:47:54,126 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_sync [2022-11-19 06:47:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 06:47:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 06:47:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 06:47:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 06:47:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 06:47:54,128 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 06:47:54,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:47:54,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:47:54,128 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 06:47:54,128 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 06:47:54,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:47:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:47:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:47:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_lists [2022-11-19 06:47:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_lists [2022-11-19 06:47:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_close [2022-11-19 06:47:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_close [2022-11-19 06:47:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_65 [2022-11-19 06:47:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_65 [2022-11-19 06:47:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:47:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:47:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_print [2022-11-19 06:47:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_print [2022-11-19 06:47:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 06:47:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 06:47:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-19 06:47:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-19 06:47:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver [2022-11-19 06:47:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver [2022-11-19 06:47:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_probe1 [2022-11-19 06:47:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_probe1 [2022-11-19 06:47:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 06:47:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 06:47:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:47:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:47:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:47:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 06:47:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 06:47:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 06:47:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 06:47:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 06:47:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 06:47:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_timer [2022-11-19 06:47:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_timer [2022-11-19 06:47:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_timer [2022-11-19 06:47:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_timer [2022-11-19 06:47:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2022-11-19 06:47:54,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2022-11-19 06:47:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_stop [2022-11-19 06:47:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_stop [2022-11-19 06:47:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 06:47:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 06:47:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 06:47:54,141 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 06:47:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_remove_one [2022-11-19 06:47:54,142 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_remove_one [2022-11-19 06:47:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_get_skb [2022-11-19 06:47:54,142 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_get_skb [2022-11-19 06:47:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_byte [2022-11-19 06:47:54,143 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_byte [2022-11-19 06:47:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:47:54,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:47:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:47:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-19 06:47:54,144 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-19 06:47:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_poll [2022-11-19 06:47:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_poll [2022-11-19 06:47:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 06:47:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 06:47:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:47:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:47:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:47:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:47:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:47:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:47:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:47:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:47:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:47:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_free_lists [2022-11-19 06:47:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_free_lists [2022-11-19 06:47:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 06:47:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 06:47:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:47:54,153 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:47:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 06:47:54,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 06:47:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-19 06:47:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-19 06:47:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-19 06:47:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-19 06:47:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_store_skb [2022-11-19 06:47:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_store_skb [2022-11-19 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_tx_timeout [2022-11-19 06:47:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_tx_timeout [2022-11-19 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:47:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:47:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2022-11-19 06:47:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2022-11-19 06:47:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_up [2022-11-19 06:47:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_up [2022-11-19 06:47:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:47:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:47:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:47:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:47:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 06:47:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 06:47:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-19 06:47:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-19 06:47:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_handle_interrupt [2022-11-19 06:47:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_handle_interrupt [2022-11-19 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_start [2022-11-19 06:47:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_start [2022-11-19 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 06:47:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 06:47:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_finish_auto_neg [2022-11-19 06:47:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_finish_auto_neg [2022-11-19 06:47:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 06:47:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 06:47:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 06:47:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 06:47:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-19 06:47:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-19 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_start_link [2022-11-19 06:47:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_start_link [2022-11-19 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_multicast_list [2022-11-19 06:47:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_multicast_list [2022-11-19 06:47:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:47:54,167 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 06:47:54,167 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 06:47:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2022-11-19 06:47:54,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2022-11-19 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_print_list [2022-11-19 06:47:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_print_list [2022-11-19 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write16 [2022-11-19 06:47:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write16 [2022-11-19 06:47:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-19 06:47:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-19 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:47:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 06:47:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 06:47:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 06:47:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 06:47:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-19 06:47:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-19 06:47:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_finish_reset [2022-11-19 06:47:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_finish_reset [2022-11-19 06:47:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write32 [2022-11-19 06:47:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write32 [2022-11-19 06:47:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:47:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:47:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 06:47:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_mac [2022-11-19 06:47:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_mac [2022-11-19 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-19 06:47:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-19 06:47:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_start [2022-11-19 06:47:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_start [2022-11-19 06:47:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read32 [2022-11-19 06:47:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read32 [2022-11-19 06:47:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:47:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write8 [2022-11-19 06:47:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write8 [2022-11-19 06:47:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:47:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:47:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_down [2022-11-19 06:47:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_down [2022-11-19 06:47:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 06:47:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 06:47:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_adapter [2022-11-19 06:47:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_adapter [2022-11-19 06:47:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_send_data [2022-11-19 06:47:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_send_data [2022-11-19 06:47:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_reset [2022-11-19 06:47:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_reset [2022-11-19 06:47:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_read_reg [2022-11-19 06:47:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_read_reg [2022-11-19 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 06:47:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_open [2022-11-19 06:47:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_open [2022-11-19 06:47:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 06:47:54,177 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 06:47:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 06:47:54,177 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 06:47:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-19 06:47:54,177 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-19 06:47:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:47:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-19 06:47:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-19 06:47:54,178 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-19 06:47:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 06:47:54,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 06:47:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 06:47:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 06:47:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-19 06:47:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-19 06:47:55,126 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:47:55,135 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:47:56,154 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:47:58,952 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume 32 == tlan_eisa_probe_~tmp___4~0#1 % 256; [2022-11-19 06:47:58,952 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume !(32 == tlan_eisa_probe_~tmp___4~0#1 % 256); [2022-11-19 06:47:58,952 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957-1: tlan_eisa_probe_~device_id~1#1 := tlan_eisa_probe_#t~ret332#1;havoc tlan_eisa_probe_#t~ret332#1; [2022-11-19 06:47:58,953 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957: SUMMARY for call tlan_eisa_probe_#t~ret332#1 := inw((if (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-19 06:47:58,953 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6991: tlan_eisa_probe_~irq~0#1 := 9; [2022-11-19 06:47:58,953 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume 0 != (if 0 == ~debug~0 then 0 else (if 16 == ~debug~0 then ~debug~0 else ~bitwiseAnd(~debug~0, 16)));havoc tlan_eisa_probe_#t~nondet329#1; [2022-11-19 06:47:58,953 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume !(0 != (if 0 == ~debug~0 then 0 else (if 16 == ~debug~0 then ~debug~0 else ~bitwiseAnd(~debug~0, 16)))); [2022-11-19 06:47:58,953 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume 0 == (tlan_eisa_probe_~tmp___1~5#1.base + tlan_eisa_probe_~tmp___1~5#1.offset) % 18446744073709551616; [2022-11-19 06:47:58,955 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume !(0 == (tlan_eisa_probe_~tmp___1~5#1.base + tlan_eisa_probe_~tmp___1~5#1.offset) % 18446744073709551616); [2022-11-19 06:47:58,955 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume 8433 != tlan_eisa_probe_~device_id~1#1 % 65536 % 4294967296 && 16625 != tlan_eisa_probe_~device_id~1#1 % 65536 % 4294967296; [2022-11-19 06:47:58,956 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume !(8433 != tlan_eisa_probe_~device_id~1#1 % 65536 % 4294967296 && 16625 != tlan_eisa_probe_~device_id~1#1 % 65536 % 4294967296); [2022-11-19 06:47:58,956 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume tlan_eisa_probe_~ioaddr~0#1 <= 36863; [2022-11-19 06:47:58,956 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume !(tlan_eisa_probe_~ioaddr~0#1 <= 36863); [2022-11-19 06:47:58,956 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976-2: SUMMARY for call tlan_eisa_probe_#t~ret335#1 := inb((if (3264 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3264 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3264 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-19 06:47:58,956 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume 16 == ~debug~0;havoc tlan_eisa_probe_#t~nondet334#1; [2022-11-19 06:47:58,956 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume !(16 == ~debug~0); [2022-11-19 06:47:58,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927-1: tlan_eisa_probe_~tmp___0~12#1 := tlan_eisa_probe_#t~ret327#1;havoc tlan_eisa_probe_#t~ret327#1;havoc tlan_eisa_probe_#t~nondet328#1; [2022-11-19 06:47:58,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927: SUMMARY for call tlan_eisa_probe_#t~ret327#1 := inw((if (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-19 06:47:58,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume 64 == tlan_eisa_probe_~tmp___4~0#1 % 256; [2022-11-19 06:47:58,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume !(64 == tlan_eisa_probe_~tmp___4~0#1 % 256); [2022-11-19 06:47:58,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6961: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16); srcloc: null [2022-11-19 06:47:58,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume 0 != (if 0 == ~debug~0 then 0 else (if 16 == ~debug~0 then ~debug~0 else ~bitwiseAnd(~debug~0, 16))); [2022-11-19 06:47:58,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume !(0 != (if 0 == ~debug~0 then 0 else (if 16 == ~debug~0 then ~debug~0 else ~bitwiseAnd(~debug~0, 16)))); [2022-11-19 06:47:58,958 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6995: tlan_eisa_probe_~irq~0#1 := 10; [2022-11-19 06:47:58,958 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947-1: tlan_eisa_probe_~tmp___2~2#1 := tlan_eisa_probe_#t~ret331#1;havoc tlan_eisa_probe_#t~ret331#1; [2022-11-19 06:47:58,965 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947: SUMMARY for call tlan_eisa_probe_#t~ret331#1 := inw((if (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-19 06:47:58,965 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7014: SUMMARY for call tlan_eisa_probe_#t~ret336#1 := tlan_probe1(0, 0, tlan_eisa_probe_~ioaddr~0#1, tlan_eisa_probe_~irq~0#1, 12, 0, 0); srcloc: null [2022-11-19 06:47:58,965 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume 128 == tlan_eisa_probe_~tmp___4~0#1 % 256; [2022-11-19 06:47:58,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume !(128 == tlan_eisa_probe_~tmp___4~0#1 % 256); [2022-11-19 06:47:58,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6932-1: call tlan_eisa_probe_#t~ret330#1.base, tlan_eisa_probe_#t~ret330#1.offset := __request_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16, ~#tlan_signature~0.base, ~#tlan_signature~0.offset, 0);tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset := tlan_eisa_probe_#t~ret330#1.base, tlan_eisa_probe_#t~ret330#1.offset;havoc tlan_eisa_probe_#t~ret330#1.base, tlan_eisa_probe_#t~ret330#1.offset; [2022-11-19 06:47:58,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume 4366 != tlan_eisa_probe_~tmp___2~2#1 % 65536 % 4294967296; [2022-11-19 06:47:58,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume !(4366 != tlan_eisa_probe_~tmp___2~2#1 % 65536 % 4294967296); [2022-11-19 06:47:58,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6999: tlan_eisa_probe_~irq~0#1 := 11; [2022-11-19 06:47:58,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6983: tlan_eisa_probe_~tmp___4~0#1 := tlan_eisa_probe_#t~ret335#1;havoc tlan_eisa_probe_#t~ret335#1; [2022-11-19 06:47:58,967 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967-1: tlan_eisa_probe_~tmp___3~1#1 := tlan_eisa_probe_#t~ret333#1;havoc tlan_eisa_probe_#t~ret333#1; [2022-11-19 06:47:58,967 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967: SUMMARY for call tlan_eisa_probe_#t~ret333#1 := inb((if (3204 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3204 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3204 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-19 06:47:58,967 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7033-1: tlan_eisa_probe_~ioaddr~0#1 := 4096 + tlan_eisa_probe_~ioaddr~0#1; [2022-11-19 06:47:58,967 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6951: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16); srcloc: null [2022-11-19 06:47:58,967 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume 0 != (if 0 == ~debug~0 then 0 else (if 16 == ~debug~0 then ~debug~0 else ~bitwiseAnd(~debug~0, 16))); [2022-11-19 06:47:58,967 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume !(0 != (if 0 == ~debug~0 then 0 else (if 16 == ~debug~0 then ~debug~0 else ~bitwiseAnd(~debug~0, 16)))); [2022-11-19 06:47:58,968 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume 16 == ~debug~0;havoc tlan_eisa_probe_#t~nondet337#1; [2022-11-19 06:47:58,968 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume !(16 == ~debug~0); [2022-11-19 06:47:58,968 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume 1 != tlan_eisa_probe_~tmp___3~1#1 % 256 % 4294967296; [2022-11-19 06:47:58,968 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume !(1 != tlan_eisa_probe_~tmp___3~1#1 % 256 % 4294967296); [2022-11-19 06:47:58,968 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume 16 == tlan_eisa_probe_~tmp___4~0#1 % 256; [2022-11-19 06:47:58,968 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume !(16 == tlan_eisa_probe_~tmp___4~0#1 % 256); [2022-11-19 06:47:58,968 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920-1: tlan_eisa_probe_~tmp~35#1 := tlan_eisa_probe_#t~ret325#1;havoc tlan_eisa_probe_#t~ret325#1;havoc tlan_eisa_probe_#t~nondet326#1; [2022-11-19 06:47:58,969 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920: SUMMARY for call tlan_eisa_probe_#t~ret325#1 := inw((if (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-19 06:47:58,969 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6987: tlan_eisa_probe_~irq~0#1 := 5; [2022-11-19 06:47:58,969 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume 16 == ~debug~0;havoc tlan_eisa_probe_#t~nondet338#1; [2022-11-19 06:47:58,969 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume !(16 == ~debug~0); [2022-11-19 06:47:58,969 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16); srcloc: null [2022-11-19 06:47:58,969 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7021: assume -2147483648 <= tlan_eisa_probe_#t~ret336#1 && tlan_eisa_probe_#t~ret336#1 <= 2147483647;tlan_eisa_probe_~rc~2#1 := tlan_eisa_probe_#t~ret336#1;havoc tlan_eisa_probe_#t~ret336#1; [2022-11-19 06:47:59,126 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:48:01,118 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:48:01,119 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:48:01,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:01 BoogieIcfgContainer [2022-11-19 06:48:01,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:48:01,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:48:01,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:48:01,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:48:01,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:47:49" (1/3) ... [2022-11-19 06:48:01,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6421dd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:01, skipping insertion in model container [2022-11-19 06:48:01,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:53" (2/3) ... [2022-11-19 06:48:01,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6421dd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:01, skipping insertion in model container [2022-11-19 06:48:01,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:01" (3/3) ... [2022-11-19 06:48:01,136 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-19 06:48:01,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:48:01,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 06:48:01,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:48:01,253 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@762459b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:48:01,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 06:48:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 1559 states, 847 states have (on average 1.2361275088547816) internal successors, (1047), 903 states have internal predecessors, (1047), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) [2022-11-19 06:48:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 06:48:01,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:01,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 06:48:01,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1125042694, now seen corresponding path program 1 times [2022-11-19 06:48:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:01,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994216481] [2022-11-19 06:48:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:48:02,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:02,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994216481] [2022-11-19 06:48:02,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994216481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:02,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:02,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:02,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566301063] [2022-11-19 06:48:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:02,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:02,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:02,304 INFO L87 Difference]: Start difference. First operand has 1559 states, 847 states have (on average 1.2361275088547816) internal successors, (1047), 903 states have internal predecessors, (1047), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:48:04,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:08,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:08,805 INFO L93 Difference]: Finished difference Result 4146 states and 6158 transitions. [2022-11-19 06:48:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:08,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-11-19 06:48:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:08,838 INFO L225 Difference]: With dead ends: 4146 [2022-11-19 06:48:08,838 INFO L226 Difference]: Without dead ends: 2596 [2022-11-19 06:48:08,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:48:08,863 INFO L413 NwaCegarLoop]: 2730 mSDtfsCounter, 1816 mSDsluCounter, 7127 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 9857 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:08,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 9857 Invalid, 1061 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-19 06:48:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2022-11-19 06:48:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2589. [2022-11-19 06:48:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 1412 states have (on average 1.2223796033994334) internal successors, (1726), 1502 states have internal predecessors, (1726), 984 states have call successors, (984), 191 states have call predecessors, (984), 190 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-19 06:48:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3691 transitions. [2022-11-19 06:48:09,137 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3691 transitions. Word has length 38 [2022-11-19 06:48:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:09,139 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 3691 transitions. [2022-11-19 06:48:09,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:48:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3691 transitions. [2022-11-19 06:48:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 06:48:09,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:09,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 06:48:09,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:48:09,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:09,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1046157686, now seen corresponding path program 1 times [2022-11-19 06:48:09,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:09,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812455525] [2022-11-19 06:48:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:09,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:48:09,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812455525] [2022-11-19 06:48:09,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812455525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:09,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:09,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:09,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122393188] [2022-11-19 06:48:09,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:09,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:09,748 INFO L87 Difference]: Start difference. First operand 2589 states and 3691 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 06:48:12,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:16,625 INFO L93 Difference]: Finished difference Result 2602 states and 3701 transitions. [2022-11-19 06:48:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:16,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-11-19 06:48:16,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:16,645 INFO L225 Difference]: With dead ends: 2602 [2022-11-19 06:48:16,645 INFO L226 Difference]: Without dead ends: 2600 [2022-11-19 06:48:16,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:48:16,649 INFO L413 NwaCegarLoop]: 2720 mSDtfsCounter, 1801 mSDsluCounter, 7096 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 9816 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:16,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 9816 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-19 06:48:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-11-19 06:48:16,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2593. [2022-11-19 06:48:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 1415 states have (on average 1.2219081272084806) internal successors, (1729), 1505 states have internal predecessors, (1729), 984 states have call successors, (984), 192 states have call predecessors, (984), 191 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-19 06:48:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3694 transitions. [2022-11-19 06:48:16,831 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3694 transitions. Word has length 43 [2022-11-19 06:48:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:16,831 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 3694 transitions. [2022-11-19 06:48:16,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 06:48:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3694 transitions. [2022-11-19 06:48:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 06:48:16,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:16,878 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 06:48:16,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:48:16,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash -6936646, now seen corresponding path program 1 times [2022-11-19 06:48:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:16,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433647154] [2022-11-19 06:48:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:48:17,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:17,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433647154] [2022-11-19 06:48:17,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433647154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:17,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:17,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102278893] [2022-11-19 06:48:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:17,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:17,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:17,326 INFO L87 Difference]: Start difference. First operand 2593 states and 3694 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:48:19,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:23,540 INFO L93 Difference]: Finished difference Result 2606 states and 3704 transitions. [2022-11-19 06:48:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:23,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-11-19 06:48:23,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:23,556 INFO L225 Difference]: With dead ends: 2606 [2022-11-19 06:48:23,556 INFO L226 Difference]: Without dead ends: 2604 [2022-11-19 06:48:23,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:48:23,559 INFO L413 NwaCegarLoop]: 2720 mSDtfsCounter, 1801 mSDsluCounter, 7096 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 9816 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:23,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 9816 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-19 06:48:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-11-19 06:48:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2597. [2022-11-19 06:48:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 1418 states have (on average 1.221438645980254) internal successors, (1732), 1508 states have internal predecessors, (1732), 984 states have call successors, (984), 193 states have call predecessors, (984), 192 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-19 06:48:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3697 transitions. [2022-11-19 06:48:23,787 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3697 transitions. Word has length 48 [2022-11-19 06:48:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:23,787 INFO L495 AbstractCegarLoop]: Abstraction has 2597 states and 3697 transitions. [2022-11-19 06:48:23,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:48:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3697 transitions. [2022-11-19 06:48:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-19 06:48:23,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:23,789 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2022-11-19 06:48:23,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:48:23,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash 223034442, now seen corresponding path program 1 times [2022-11-19 06:48:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:23,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325421355] [2022-11-19 06:48:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-19 06:48:24,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:24,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325421355] [2022-11-19 06:48:24,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325421355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:24,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:24,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:24,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687784605] [2022-11-19 06:48:24,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:24,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:24,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:24,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:24,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:24,216 INFO L87 Difference]: Start difference. First operand 2597 states and 3697 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 06:48:26,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:30,419 INFO L93 Difference]: Finished difference Result 2610 states and 3707 transitions. [2022-11-19 06:48:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:30,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 53 [2022-11-19 06:48:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:30,434 INFO L225 Difference]: With dead ends: 2610 [2022-11-19 06:48:30,435 INFO L226 Difference]: Without dead ends: 2608 [2022-11-19 06:48:30,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:48:30,438 INFO L413 NwaCegarLoop]: 2720 mSDtfsCounter, 1801 mSDsluCounter, 7096 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 9816 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:30,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 9816 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-19 06:48:30,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2022-11-19 06:48:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2601. [2022-11-19 06:48:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 1421 states have (on average 1.2209711470795215) internal successors, (1735), 1511 states have internal predecessors, (1735), 984 states have call successors, (984), 194 states have call predecessors, (984), 193 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-19 06:48:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3700 transitions. [2022-11-19 06:48:30,610 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3700 transitions. Word has length 53 [2022-11-19 06:48:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:30,611 INFO L495 AbstractCegarLoop]: Abstraction has 2601 states and 3700 transitions. [2022-11-19 06:48:30,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 06:48:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3700 transitions. [2022-11-19 06:48:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 06:48:30,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:30,614 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2022-11-19 06:48:30,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:48:30,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1601804666, now seen corresponding path program 1 times [2022-11-19 06:48:30,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:30,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779880349] [2022-11-19 06:48:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:30,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-19 06:48:30,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:30,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779880349] [2022-11-19 06:48:30,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779880349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:30,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:30,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429329257] [2022-11-19 06:48:31,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:31,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:31,001 INFO L87 Difference]: Start difference. First operand 2601 states and 3700 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 06:48:33,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:37,440 INFO L93 Difference]: Finished difference Result 2614 states and 3710 transitions. [2022-11-19 06:48:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:37,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 58 [2022-11-19 06:48:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:37,456 INFO L225 Difference]: With dead ends: 2614 [2022-11-19 06:48:37,456 INFO L226 Difference]: Without dead ends: 2612 [2022-11-19 06:48:37,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:48:37,459 INFO L413 NwaCegarLoop]: 2720 mSDtfsCounter, 1801 mSDsluCounter, 7096 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 9816 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:37,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 9816 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 06:48:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2022-11-19 06:48:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2605. [2022-11-19 06:48:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 1424 states have (on average 1.220505617977528) internal successors, (1738), 1514 states have internal predecessors, (1738), 984 states have call successors, (984), 195 states have call predecessors, (984), 194 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-19 06:48:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3703 transitions. [2022-11-19 06:48:37,623 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3703 transitions. Word has length 58 [2022-11-19 06:48:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:37,623 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 3703 transitions. [2022-11-19 06:48:37,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 06:48:37,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3703 transitions. [2022-11-19 06:48:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 06:48:37,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:37,625 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 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] [2022-11-19 06:48:37,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:48:37,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:37,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:37,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1052971530, now seen corresponding path program 1 times [2022-11-19 06:48:37,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:37,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486999033] [2022-11-19 06:48:37,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:37,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-19 06:48:37,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:37,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486999033] [2022-11-19 06:48:37,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486999033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:37,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:37,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906158481] [2022-11-19 06:48:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:37,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:37,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:37,948 INFO L87 Difference]: Start difference. First operand 2605 states and 3703 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:48:40,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:44,437 INFO L93 Difference]: Finished difference Result 2618 states and 3713 transitions. [2022-11-19 06:48:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 63 [2022-11-19 06:48:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:44,458 INFO L225 Difference]: With dead ends: 2618 [2022-11-19 06:48:44,458 INFO L226 Difference]: Without dead ends: 2616 [2022-11-19 06:48:44,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:48:44,461 INFO L413 NwaCegarLoop]: 2720 mSDtfsCounter, 1801 mSDsluCounter, 7096 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 9816 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:44,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 9816 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 06:48:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2022-11-19 06:48:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2609. [2022-11-19 06:48:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 1427 states have (on average 1.2200420462508759) internal successors, (1741), 1517 states have internal predecessors, (1741), 984 states have call successors, (984), 196 states have call predecessors, (984), 195 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-19 06:48:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 3706 transitions. [2022-11-19 06:48:44,645 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 3706 transitions. Word has length 63 [2022-11-19 06:48:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:44,645 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 3706 transitions. [2022-11-19 06:48:44,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:48:44,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 3706 transitions. [2022-11-19 06:48:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 06:48:44,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:44,647 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2022-11-19 06:48:44,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:48:44,648 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:44,648 INFO L85 PathProgramCache]: Analyzing trace with hash -907080092, now seen corresponding path program 1 times [2022-11-19 06:48:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:44,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10640994] [2022-11-19 06:48:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:44,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-19 06:48:45,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10640994] [2022-11-19 06:48:45,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10640994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:45,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:45,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63460832] [2022-11-19 06:48:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:45,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:45,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:45,007 INFO L87 Difference]: Start difference. First operand 2609 states and 3706 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:48:47,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:51,974 INFO L93 Difference]: Finished difference Result 4783 states and 7079 transitions. [2022-11-19 06:48:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:48:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 78 [2022-11-19 06:48:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:52,007 INFO L225 Difference]: With dead ends: 4783 [2022-11-19 06:48:52,007 INFO L226 Difference]: Without dead ends: 4781 [2022-11-19 06:48:52,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:48:52,011 INFO L413 NwaCegarLoop]: 3084 mSDtfsCounter, 1888 mSDsluCounter, 8183 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 11267 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:52,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1893 Valid, 11267 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1239 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-19 06:48:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-11-19 06:48:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4768. [2022-11-19 06:48:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 2603 states have (on average 1.215904725316942) internal successors, (3165), 2779 states have internal predecessors, (3165), 1787 states have call successors, (1787), 387 states have call predecessors, (1787), 375 states have return successors, (2115), 1692 states have call predecessors, (2115), 1781 states have call successors, (2115) [2022-11-19 06:48:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 7067 transitions. [2022-11-19 06:48:52,368 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 7067 transitions. Word has length 78 [2022-11-19 06:48:52,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:52,368 INFO L495 AbstractCegarLoop]: Abstraction has 4768 states and 7067 transitions. [2022-11-19 06:48:52,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:48:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 7067 transitions. [2022-11-19 06:48:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 06:48:52,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:52,372 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 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] [2022-11-19 06:48:52,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:48:52,372 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:52,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1579968458, now seen corresponding path program 1 times [2022-11-19 06:48:52,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:52,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201885570] [2022-11-19 06:48:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:52,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-19 06:48:52,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:52,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201885570] [2022-11-19 06:48:52,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201885570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:52,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:52,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622519010] [2022-11-19 06:48:52,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:52,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:52,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:52,686 INFO L87 Difference]: Start difference. First operand 4768 states and 7067 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:48:54,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:58,761 INFO L93 Difference]: Finished difference Result 4788 states and 7084 transitions. [2022-11-19 06:48:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:58,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-11-19 06:48:58,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:58,793 INFO L225 Difference]: With dead ends: 4788 [2022-11-19 06:48:58,793 INFO L226 Difference]: Without dead ends: 4786 [2022-11-19 06:48:58,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:48:58,798 INFO L413 NwaCegarLoop]: 2537 mSDtfsCounter, 1801 mSDsluCounter, 6730 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 9267 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:58,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1806 Valid, 9267 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1002 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-19 06:48:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2022-11-19 06:48:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 4782. [2022-11-19 06:48:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 2613 states have (on average 1.215078453884424) internal successors, (3175), 2791 states have internal predecessors, (3175), 1787 states have call successors, (1787), 389 states have call predecessors, (1787), 379 states have return successors, (2117), 1694 states have call predecessors, (2117), 1781 states have call successors, (2117) [2022-11-19 06:48:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 7079 transitions. [2022-11-19 06:48:59,168 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 7079 transitions. Word has length 73 [2022-11-19 06:48:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:59,168 INFO L495 AbstractCegarLoop]: Abstraction has 4782 states and 7079 transitions. [2022-11-19 06:48:59,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:48:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 7079 transitions. [2022-11-19 06:48:59,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 06:48:59,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:59,171 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 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] [2022-11-19 06:48:59,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:48:59,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:48:59,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:59,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1367606022, now seen corresponding path program 1 times [2022-11-19 06:48:59,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:59,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988985895] [2022-11-19 06:48:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:59,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 06:48:59,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:59,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988985895] [2022-11-19 06:48:59,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988985895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:59,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:59,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:59,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896773275] [2022-11-19 06:48:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:59,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:59,508 INFO L87 Difference]: Start difference. First operand 4782 states and 7079 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:49:01,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:06,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:06,038 INFO L93 Difference]: Finished difference Result 4796 states and 7090 transitions. [2022-11-19 06:49:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:49:06,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 78 [2022-11-19 06:49:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:06,063 INFO L225 Difference]: With dead ends: 4796 [2022-11-19 06:49:06,064 INFO L226 Difference]: Without dead ends: 4794 [2022-11-19 06:49:06,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:49:06,068 INFO L413 NwaCegarLoop]: 2520 mSDtfsCounter, 1801 mSDsluCounter, 6696 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 9216 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:06,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 9216 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 996 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 06:49:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2022-11-19 06:49:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4790. [2022-11-19 06:49:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4790 states, 2619 states have (on average 1.214585719740359) internal successors, (3181), 2797 states have internal predecessors, (3181), 1787 states have call successors, (1787), 391 states have call predecessors, (1787), 381 states have return successors, (2117), 1694 states have call predecessors, (2117), 1781 states have call successors, (2117) [2022-11-19 06:49:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 7085 transitions. [2022-11-19 06:49:06,474 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 7085 transitions. Word has length 78 [2022-11-19 06:49:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:06,475 INFO L495 AbstractCegarLoop]: Abstraction has 4790 states and 7085 transitions. [2022-11-19 06:49:06,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:49:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 7085 transitions. [2022-11-19 06:49:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 06:49:06,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:06,477 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 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] [2022-11-19 06:49:06,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:49:06,477 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:49:06,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash -878232182, now seen corresponding path program 1 times [2022-11-19 06:49:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:06,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104218994] [2022-11-19 06:49:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:06,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-19 06:49:06,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:06,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104218994] [2022-11-19 06:49:06,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104218994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:06,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:06,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:49:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503158400] [2022-11-19 06:49:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:06,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:49:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:49:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:49:06,754 INFO L87 Difference]: Start difference. First operand 4790 states and 7085 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:49:09,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:13,077 INFO L93 Difference]: Finished difference Result 4804 states and 7096 transitions. [2022-11-19 06:49:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:49:13,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-19 06:49:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:13,097 INFO L225 Difference]: With dead ends: 4804 [2022-11-19 06:49:13,097 INFO L226 Difference]: Without dead ends: 4802 [2022-11-19 06:49:13,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:49:13,100 INFO L413 NwaCegarLoop]: 2520 mSDtfsCounter, 1801 mSDsluCounter, 6696 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 9216 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:13,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 9216 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 996 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-19 06:49:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2022-11-19 06:49:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4798. [2022-11-19 06:49:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 2625 states have (on average 1.2140952380952381) internal successors, (3187), 2803 states have internal predecessors, (3187), 1787 states have call successors, (1787), 393 states have call predecessors, (1787), 383 states have return successors, (2117), 1694 states have call predecessors, (2117), 1781 states have call successors, (2117) [2022-11-19 06:49:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 7091 transitions. [2022-11-19 06:49:13,460 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 7091 transitions. Word has length 83 [2022-11-19 06:49:13,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:13,460 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 7091 transitions. [2022-11-19 06:49:13,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:49:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 7091 transitions. [2022-11-19 06:49:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-19 06:49:13,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:13,463 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 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] [2022-11-19 06:49:13,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 06:49:13,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:49:13,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:13,464 INFO L85 PathProgramCache]: Analyzing trace with hash 101136612, now seen corresponding path program 1 times [2022-11-19 06:49:13,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:13,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136439037] [2022-11-19 06:49:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:13,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-19 06:49:13,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:13,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136439037] [2022-11-19 06:49:13,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136439037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:13,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:13,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:49:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526413007] [2022-11-19 06:49:13,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:13,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:49:13,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:49:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:49:13,767 INFO L87 Difference]: Start difference. First operand 4798 states and 7091 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 06:49:16,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:19,966 INFO L93 Difference]: Finished difference Result 4812 states and 7102 transitions. [2022-11-19 06:49:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:49:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 98 [2022-11-19 06:49:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:19,987 INFO L225 Difference]: With dead ends: 4812 [2022-11-19 06:49:19,987 INFO L226 Difference]: Without dead ends: 4808 [2022-11-19 06:49:19,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:49:19,991 INFO L413 NwaCegarLoop]: 2520 mSDtfsCounter, 1795 mSDsluCounter, 6696 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 9216 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:19,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 9216 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 996 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-19 06:49:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2022-11-19 06:49:20,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4804. [2022-11-19 06:49:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 2630 states have (on average 1.2133079847908745) internal successors, (3191), 2807 states have internal predecessors, (3191), 1787 states have call successors, (1787), 395 states have call predecessors, (1787), 384 states have return successors, (2117), 1694 states have call predecessors, (2117), 1781 states have call successors, (2117) [2022-11-19 06:49:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 7095 transitions. [2022-11-19 06:49:20,428 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 7095 transitions. Word has length 98 [2022-11-19 06:49:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:20,429 INFO L495 AbstractCegarLoop]: Abstraction has 4804 states and 7095 transitions. [2022-11-19 06:49:20,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 06:49:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 7095 transitions. [2022-11-19 06:49:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 06:49:20,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:20,431 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 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] [2022-11-19 06:49:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 06:49:20,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:49:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1062441802, now seen corresponding path program 1 times [2022-11-19 06:49:20,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:20,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580539177] [2022-11-19 06:49:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:20,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-19 06:49:20,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:20,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580539177] [2022-11-19 06:49:20,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580539177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:20,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:20,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:49:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471875903] [2022-11-19 06:49:20,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:49:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:49:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:49:20,720 INFO L87 Difference]: Start difference. First operand 4804 states and 7095 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:49:23,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:25,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:28,456 INFO L93 Difference]: Finished difference Result 4810 states and 7100 transitions. [2022-11-19 06:49:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:49:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-11-19 06:49:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:28,478 INFO L225 Difference]: With dead ends: 4810 [2022-11-19 06:49:28,478 INFO L226 Difference]: Without dead ends: 4719 [2022-11-19 06:49:28,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:49:28,482 INFO L413 NwaCegarLoop]: 1986 mSDtfsCounter, 2203 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 5939 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:28,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2203 Valid, 5939 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 740 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-19 06:49:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2022-11-19 06:49:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4719. [2022-11-19 06:49:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4719 states, 2581 states have (on average 1.2158078264238668) internal successors, (3138), 2756 states have internal predecessors, (3138), 1767 states have call successors, (1767), 378 states have call predecessors, (1767), 368 states have return successors, (2100), 1677 states have call predecessors, (2100), 1764 states have call successors, (2100) [2022-11-19 06:49:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 7005 transitions. [2022-11-19 06:49:28,927 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 7005 transitions. Word has length 93 [2022-11-19 06:49:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:28,927 INFO L495 AbstractCegarLoop]: Abstraction has 4719 states and 7005 transitions. [2022-11-19 06:49:28,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:49:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 7005 transitions. [2022-11-19 06:49:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 06:49:28,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:28,930 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:28,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 06:49:28,930 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:49:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1250725995, now seen corresponding path program 1 times [2022-11-19 06:49:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:28,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698534094] [2022-11-19 06:49:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:28,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-19 06:49:29,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:29,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698534094] [2022-11-19 06:49:29,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698534094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:29,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:29,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 06:49:29,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255395390] [2022-11-19 06:49:29,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:29,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:49:29,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:49:29,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:49:29,781 INFO L87 Difference]: Start difference. First operand 4719 states and 7005 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:49:31,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:33,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:35,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:45,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:47,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:49,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:54,508 INFO L93 Difference]: Finished difference Result 8182 states and 12990 transitions. [2022-11-19 06:49:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:49:54,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2022-11-19 06:49:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:54,550 INFO L225 Difference]: With dead ends: 8182 [2022-11-19 06:49:54,550 INFO L226 Difference]: Without dead ends: 8180 [2022-11-19 06:49:54,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:49:54,555 INFO L413 NwaCegarLoop]: 1791 mSDtfsCounter, 3125 mSDsluCounter, 4941 mSDsCounter, 0 mSdLazyCounter, 8231 mSolverCounterSat, 2291 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 6732 SdHoareTripleChecker+Invalid, 10526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2291 IncrementalHoareTripleChecker+Valid, 8231 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:54,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3572 Valid, 6732 Invalid, 10526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2291 Valid, 8231 Invalid, 4 Unknown, 0 Unchecked, 23.8s Time] [2022-11-19 06:49:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2022-11-19 06:49:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 8113. [2022-11-19 06:49:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 4467 states have (on average 1.2196104768300873) internal successors, (5448), 4772 states have internal predecessors, (5448), 3003 states have call successors, (3003), 556 states have call predecessors, (3003), 640 states have return successors, (4454), 2939 states have call predecessors, (4454), 3000 states have call successors, (4454) [2022-11-19 06:49:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12905 transitions. [2022-11-19 06:49:55,428 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12905 transitions. Word has length 117 [2022-11-19 06:49:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 8113 states and 12905 transitions. [2022-11-19 06:49:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:49:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12905 transitions. [2022-11-19 06:49:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-19 06:49:55,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:55,434 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:55,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 06:49:55,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:49:55,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash 771247449, now seen corresponding path program 1 times [2022-11-19 06:49:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:55,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380266815] [2022-11-19 06:49:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:55,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 06:49:55,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:55,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380266815] [2022-11-19 06:49:55,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380266815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:55,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:55,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:49:55,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752374697] [2022-11-19 06:49:55,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:55,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:49:55,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:49:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:49:55,982 INFO L87 Difference]: Start difference. First operand 8113 states and 12905 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:49:58,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:04,451 INFO L93 Difference]: Finished difference Result 10085 states and 15928 transitions. [2022-11-19 06:50:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:50:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 136 [2022-11-19 06:50:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:04,519 INFO L225 Difference]: With dead ends: 10085 [2022-11-19 06:50:04,519 INFO L226 Difference]: Without dead ends: 10083 [2022-11-19 06:50:04,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:50:04,530 INFO L413 NwaCegarLoop]: 3367 mSDtfsCounter, 2214 mSDsluCounter, 8445 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 11812 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:04,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2215 Valid, 11812 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1410 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-19 06:50:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10083 states. [2022-11-19 06:50:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10083 to 10036. [2022-11-19 06:50:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10036 states, 5501 states have (on average 1.2150518087620432) internal successors, (6684), 5880 states have internal predecessors, (6684), 3725 states have call successors, (3725), 733 states have call predecessors, (3725), 807 states have return successors, (5471), 3606 states have call predecessors, (5471), 3722 states have call successors, (5471) [2022-11-19 06:50:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10036 states to 10036 states and 15880 transitions. [2022-11-19 06:50:05,414 INFO L78 Accepts]: Start accepts. Automaton has 10036 states and 15880 transitions. Word has length 136 [2022-11-19 06:50:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:05,415 INFO L495 AbstractCegarLoop]: Abstraction has 10036 states and 15880 transitions. [2022-11-19 06:50:05,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:50:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 10036 states and 15880 transitions. [2022-11-19 06:50:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-19 06:50:05,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:05,422 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:50:05,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 06:50:05,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:50:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1371267145, now seen corresponding path program 1 times [2022-11-19 06:50:05,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:05,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350514840] [2022-11-19 06:50:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-19 06:50:06,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:06,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350514840] [2022-11-19 06:50:06,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350514840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:06,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:06,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:50:06,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385113659] [2022-11-19 06:50:06,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:50:06,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:06,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:50:06,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:50:06,387 INFO L87 Difference]: Start difference. First operand 10036 states and 15880 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 06:50:08,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:12,320 INFO L93 Difference]: Finished difference Result 20078 states and 31830 transitions. [2022-11-19 06:50:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:50:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 175 [2022-11-19 06:50:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:12,402 INFO L225 Difference]: With dead ends: 20078 [2022-11-19 06:50:12,403 INFO L226 Difference]: Without dead ends: 10058 [2022-11-19 06:50:12,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:50:12,557 INFO L413 NwaCegarLoop]: 1983 mSDtfsCounter, 9 mSDsluCounter, 3955 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5938 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:12,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5938 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-19 06:50:12,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10058 states. [2022-11-19 06:50:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10058 to 10040. [2022-11-19 06:50:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10040 states, 5505 states have (on average 1.214895549500454) internal successors, (6688), 5884 states have internal predecessors, (6688), 3725 states have call successors, (3725), 733 states have call predecessors, (3725), 807 states have return successors, (5471), 3606 states have call predecessors, (5471), 3722 states have call successors, (5471) [2022-11-19 06:50:13,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10040 states to 10040 states and 15884 transitions. [2022-11-19 06:50:13,791 INFO L78 Accepts]: Start accepts. Automaton has 10040 states and 15884 transitions. Word has length 175 [2022-11-19 06:50:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:13,792 INFO L495 AbstractCegarLoop]: Abstraction has 10040 states and 15884 transitions. [2022-11-19 06:50:13,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 06:50:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 10040 states and 15884 transitions. [2022-11-19 06:50:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-19 06:50:13,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:13,801 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:50:13,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 06:50:13,801 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:50:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:13,802 INFO L85 PathProgramCache]: Analyzing trace with hash 668211881, now seen corresponding path program 1 times [2022-11-19 06:50:13,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:13,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989867164] [2022-11-19 06:50:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:13,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-19 06:50:16,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:16,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989867164] [2022-11-19 06:50:16,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989867164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:16,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377910731] [2022-11-19 06:50:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:16,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:16,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:16,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:16,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:50:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:17,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2789 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-19 06:50:17,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-19 06:50:18,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:50:18,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377910731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:18,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:50:18,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 16 [2022-11-19 06:50:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357720785] [2022-11-19 06:50:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 06:50:18,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 06:50:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:50:18,300 INFO L87 Difference]: Start difference. First operand 10040 states and 15884 transitions. Second operand has 11 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 5 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-19 06:50:21,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:31,105 INFO L93 Difference]: Finished difference Result 20476 states and 32423 transitions. [2022-11-19 06:50:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 06:50:31,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 5 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) Word has length 186 [2022-11-19 06:50:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:31,180 INFO L225 Difference]: With dead ends: 20476 [2022-11-19 06:50:31,180 INFO L226 Difference]: Without dead ends: 10448 [2022-11-19 06:50:31,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:50:31,278 INFO L413 NwaCegarLoop]: 2057 mSDtfsCounter, 76 mSDsluCounter, 18277 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 20334 SdHoareTripleChecker+Invalid, 3077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:31,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 20334 Invalid, 3077 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 3026 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-11-19 06:50:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10448 states. [2022-11-19 06:50:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10448 to 10072. [2022-11-19 06:50:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10072 states, 5525 states have (on average 1.2141176470588235) internal successors, (6708), 5904 states have internal predecessors, (6708), 3733 states have call successors, (3733), 733 states have call predecessors, (3733), 811 states have return successors, (5483), 3618 states have call predecessors, (5483), 3730 states have call successors, (5483) [2022-11-19 06:50:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10072 states to 10072 states and 15924 transitions. [2022-11-19 06:50:32,248 INFO L78 Accepts]: Start accepts. Automaton has 10072 states and 15924 transitions. Word has length 186 [2022-11-19 06:50:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:32,249 INFO L495 AbstractCegarLoop]: Abstraction has 10072 states and 15924 transitions. [2022-11-19 06:50:32,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 5 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-19 06:50:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 10072 states and 15924 transitions. [2022-11-19 06:50:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-19 06:50:32,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:32,257 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:50:32,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:50:32,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 06:50:32,468 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:50:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash -819099075, now seen corresponding path program 1 times [2022-11-19 06:50:32,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:32,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526501065] [2022-11-19 06:50:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:32,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-19 06:50:32,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:32,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526501065] [2022-11-19 06:50:32,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526501065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:32,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:32,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:50:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374536297] [2022-11-19 06:50:32,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:32,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:32,702 INFO L87 Difference]: Start difference. First operand 10072 states and 15924 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 06:50:34,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:37,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:37,979 INFO L93 Difference]: Finished difference Result 20219 states and 31981 transitions. [2022-11-19 06:50:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:37,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 189 [2022-11-19 06:50:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:38,042 INFO L225 Difference]: With dead ends: 20219 [2022-11-19 06:50:38,042 INFO L226 Difference]: Without dead ends: 10163 [2022-11-19 06:50:38,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:38,148 INFO L413 NwaCegarLoop]: 1991 mSDtfsCounter, 26 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:38,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3948 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 06:50:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2022-11-19 06:50:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10137. [2022-11-19 06:50:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10137 states, 5574 states have (on average 1.213670613562971) internal successors, (6765), 5948 states have internal predecessors, (6765), 3749 states have call successors, (3749), 733 states have call predecessors, (3749), 811 states have return successors, (5499), 3634 states have call predecessors, (5499), 3746 states have call successors, (5499) [2022-11-19 06:50:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10137 states to 10137 states and 16013 transitions. [2022-11-19 06:50:39,287 INFO L78 Accepts]: Start accepts. Automaton has 10137 states and 16013 transitions. Word has length 189 [2022-11-19 06:50:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:39,287 INFO L495 AbstractCegarLoop]: Abstraction has 10137 states and 16013 transitions. [2022-11-19 06:50:39,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 06:50:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 10137 states and 16013 transitions. [2022-11-19 06:50:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-19 06:50:39,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:39,295 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:50:39,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 06:50:39,296 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:50:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1761561498, now seen corresponding path program 1 times [2022-11-19 06:50:39,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:39,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649691434] [2022-11-19 06:50:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:39,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-19 06:50:41,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:41,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649691434] [2022-11-19 06:50:41,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649691434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:41,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510282132] [2022-11-19 06:50:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:41,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:41,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:41,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:41,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:50:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:42,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-19 06:50:42,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-19 06:50:42,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:50:42,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510282132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:42,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:50:42,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 17 [2022-11-19 06:50:42,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643421593] [2022-11-19 06:50:42,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:42,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:50:42,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:50:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:50:42,727 INFO L87 Difference]: Start difference. First operand 10137 states and 16013 transitions. Second operand has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-19 06:50:45,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:55,442 INFO L93 Difference]: Finished difference Result 20682 states and 32730 transitions. [2022-11-19 06:50:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:50:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) Word has length 192 [2022-11-19 06:50:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:55,501 INFO L225 Difference]: With dead ends: 20682 [2022-11-19 06:50:55,501 INFO L226 Difference]: Without dead ends: 10557 [2022-11-19 06:50:55,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:50:55,589 INFO L413 NwaCegarLoop]: 2064 mSDtfsCounter, 98 mSDsluCounter, 20370 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 22434 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:55,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 22434 Invalid, 3407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 3348 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-11-19 06:50:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10557 states. [2022-11-19 06:50:56,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10557 to 10141. [2022-11-19 06:50:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10141 states, 5576 states have (on average 1.213593974175036) internal successors, (6767), 5952 states have internal predecessors, (6767), 3749 states have call successors, (3749), 733 states have call predecessors, (3749), 813 states have return successors, (5510), 3634 states have call predecessors, (5510), 3746 states have call successors, (5510) [2022-11-19 06:50:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10141 states to 10141 states and 16026 transitions. [2022-11-19 06:50:56,797 INFO L78 Accepts]: Start accepts. Automaton has 10141 states and 16026 transitions. Word has length 192 [2022-11-19 06:50:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:56,797 INFO L495 AbstractCegarLoop]: Abstraction has 10141 states and 16026 transitions. [2022-11-19 06:50:56,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-19 06:50:56,797 INFO L276 IsEmpty]: Start isEmpty. Operand 10141 states and 16026 transitions. [2022-11-19 06:50:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-19 06:50:56,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:56,804 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:56,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:50:57,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 06:50:57,021 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:50:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1633078753, now seen corresponding path program 1 times [2022-11-19 06:50:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:57,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817541398] [2022-11-19 06:50:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:57,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-19 06:50:57,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:57,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817541398] [2022-11-19 06:50:57,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817541398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:57,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:57,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 06:50:57,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165402479] [2022-11-19 06:50:57,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:57,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:50:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:57,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:50:57,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:50:57,895 INFO L87 Difference]: Start difference. First operand 10141 states and 16026 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 06:51:00,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:09,805 INFO L93 Difference]: Finished difference Result 10192 states and 16083 transitions. [2022-11-19 06:51:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:51:09,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 220 [2022-11-19 06:51:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:09,851 INFO L225 Difference]: With dead ends: 10192 [2022-11-19 06:51:09,851 INFO L226 Difference]: Without dead ends: 10153 [2022-11-19 06:51:09,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:51:09,861 INFO L413 NwaCegarLoop]: 2611 mSDtfsCounter, 2863 mSDsluCounter, 6206 mSDsCounter, 0 mSdLazyCounter, 5337 mSolverCounterSat, 668 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3210 SdHoareTripleChecker+Valid, 8817 SdHoareTripleChecker+Invalid, 6006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 5337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:09,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3210 Valid, 8817 Invalid, 6006 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [668 Valid, 5337 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-19 06:51:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10153 states. [2022-11-19 06:51:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10153 to 10140. [2022-11-19 06:51:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10140 states, 5576 states have (on average 1.2130559540889527) internal successors, (6764), 5951 states have internal predecessors, (6764), 3748 states have call successors, (3748), 733 states have call predecessors, (3748), 813 states have return successors, (5509), 3634 states have call predecessors, (5509), 3745 states have call successors, (5509) [2022-11-19 06:51:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 16021 transitions. [2022-11-19 06:51:10,754 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 16021 transitions. Word has length 220 [2022-11-19 06:51:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:10,755 INFO L495 AbstractCegarLoop]: Abstraction has 10140 states and 16021 transitions. [2022-11-19 06:51:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 06:51:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 16021 transitions. [2022-11-19 06:51:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-19 06:51:10,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:10,764 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:51:10,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 06:51:10,764 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:51:10,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1989984992, now seen corresponding path program 1 times [2022-11-19 06:51:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:10,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103313708] [2022-11-19 06:51:10,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:10,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-19 06:51:11,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:11,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103313708] [2022-11-19 06:51:11,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103313708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:11,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:11,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:51:11,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31392853] [2022-11-19 06:51:11,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:11,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:51:11,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:51:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:51:11,181 INFO L87 Difference]: Start difference. First operand 10140 states and 16021 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-19 06:51:13,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:16,839 INFO L93 Difference]: Finished difference Result 20322 states and 32127 transitions. [2022-11-19 06:51:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:51:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 239 [2022-11-19 06:51:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:16,887 INFO L225 Difference]: With dead ends: 20322 [2022-11-19 06:51:16,887 INFO L226 Difference]: Without dead ends: 10198 [2022-11-19 06:51:16,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:16,956 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 31 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:16,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 5958 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 743 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-19 06:51:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10198 states. [2022-11-19 06:51:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10198 to 10149. [2022-11-19 06:51:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10149 states, 5583 states have (on average 1.2127888232133262) internal successors, (6771), 5959 states have internal predecessors, (6771), 3750 states have call successors, (3750), 733 states have call predecessors, (3750), 813 states have return successors, (5511), 3636 states have call predecessors, (5511), 3747 states have call successors, (5511) [2022-11-19 06:51:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10149 states to 10149 states and 16032 transitions. [2022-11-19 06:51:17,808 INFO L78 Accepts]: Start accepts. Automaton has 10149 states and 16032 transitions. Word has length 239 [2022-11-19 06:51:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:17,808 INFO L495 AbstractCegarLoop]: Abstraction has 10149 states and 16032 transitions. [2022-11-19 06:51:17,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-19 06:51:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 10149 states and 16032 transitions. [2022-11-19 06:51:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-19 06:51:17,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:17,817 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:51:17,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 06:51:17,817 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:51:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1325311356, now seen corresponding path program 1 times [2022-11-19 06:51:17,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:17,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688446055] [2022-11-19 06:51:17,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:17,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-19 06:51:18,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:18,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688446055] [2022-11-19 06:51:18,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688446055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:18,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:18,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:18,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898937924] [2022-11-19 06:51:18,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:18,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:18,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:18,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:18,315 INFO L87 Difference]: Start difference. First operand 10149 states and 16032 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-19 06:51:20,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:23,278 INFO L93 Difference]: Finished difference Result 17941 states and 28302 transitions. [2022-11-19 06:51:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 245 [2022-11-19 06:51:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:23,324 INFO L225 Difference]: With dead ends: 17941 [2022-11-19 06:51:23,324 INFO L226 Difference]: Without dead ends: 7808 [2022-11-19 06:51:23,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:23,402 INFO L413 NwaCegarLoop]: 2012 mSDtfsCounter, 36 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:23,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 3987 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-19 06:51:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7808 states. [2022-11-19 06:51:23,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7808 to 7739. [2022-11-19 06:51:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7739 states, 4257 states have (on average 1.2071881606765327) internal successors, (5139), 4531 states have internal predecessors, (5139), 2845 states have call successors, (2845), 548 states have call predecessors, (2845), 634 states have return successors, (4172), 2790 states have call predecessors, (4172), 2842 states have call successors, (4172) [2022-11-19 06:51:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7739 states to 7739 states and 12156 transitions. [2022-11-19 06:51:24,018 INFO L78 Accepts]: Start accepts. Automaton has 7739 states and 12156 transitions. Word has length 245 [2022-11-19 06:51:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:24,018 INFO L495 AbstractCegarLoop]: Abstraction has 7739 states and 12156 transitions. [2022-11-19 06:51:24,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-19 06:51:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7739 states and 12156 transitions. [2022-11-19 06:51:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-19 06:51:24,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:24,029 INFO L195 NwaCegarLoop]: trace histogram [25, 13, 11, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:24,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 06:51:24,030 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:51:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1473382521, now seen corresponding path program 1 times [2022-11-19 06:51:24,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:24,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382193078] [2022-11-19 06:51:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:24,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2022-11-19 06:51:24,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:24,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382193078] [2022-11-19 06:51:24,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382193078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:24,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:24,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:24,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370424445] [2022-11-19 06:51:24,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:24,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:24,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:24,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:24,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:24,372 INFO L87 Difference]: Start difference. First operand 7739 states and 12156 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, (90), 2 states have call predecessors, (90), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-19 06:51:26,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:29,170 INFO L93 Difference]: Finished difference Result 10041 states and 15742 transitions. [2022-11-19 06:51:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:29,173 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, (90), 2 states have call predecessors, (90), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 466 [2022-11-19 06:51:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:29,205 INFO L225 Difference]: With dead ends: 10041 [2022-11-19 06:51:29,205 INFO L226 Difference]: Without dead ends: 7891 [2022-11-19 06:51:29,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:29,224 INFO L413 NwaCegarLoop]: 2024 mSDtfsCounter, 189 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:29,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 3972 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 482 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-19 06:51:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2022-11-19 06:51:29,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 7850. [2022-11-19 06:51:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7850 states, 4323 states have (on average 1.207263474439047) internal successors, (5219), 4601 states have internal predecessors, (5219), 2875 states have call successors, (2875), 563 states have call predecessors, (2875), 649 states have return successors, (4207), 2819 states have call predecessors, (4207), 2872 states have call successors, (4207) [2022-11-19 06:51:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 12301 transitions. [2022-11-19 06:51:29,841 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 12301 transitions. Word has length 466 [2022-11-19 06:51:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:29,841 INFO L495 AbstractCegarLoop]: Abstraction has 7850 states and 12301 transitions. [2022-11-19 06:51:29,841 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, (90), 2 states have call predecessors, (90), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-19 06:51:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 12301 transitions. [2022-11-19 06:51:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-11-19 06:51:29,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:29,854 INFO L195 NwaCegarLoop]: trace histogram [19, 15, 15, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:29,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-19 06:51:29,855 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:51:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1331539295, now seen corresponding path program 1 times [2022-11-19 06:51:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:29,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290330143] [2022-11-19 06:51:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2022-11-19 06:51:30,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:30,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290330143] [2022-11-19 06:51:30,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290330143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:51:30,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355932294] [2022-11-19 06:51:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:30,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:30,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:30,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:51:30,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:51:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:32,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 5575 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:51:32,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 293 proven. 1 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2022-11-19 06:51:32,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:51:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2022-11-19 06:51:33,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355932294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:51:33,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [22057523] [2022-11-19 06:51:33,914 INFO L159 IcfgInterpreter]: Started Sifa with 263 locations of interest [2022-11-19 06:51:33,915 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:51:33,919 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:51:33,926 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:51:33,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:51:37,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:37,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:37,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:37,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:37,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:37,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:37,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:51:37,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:51:37,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:51:37,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:51:37,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:51:37,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:51:37,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 29 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2022-11-19 06:51:38,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:51:38,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:51:38,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 49 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2022-11-19 06:56:01,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:01,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-19 06:56:01,636 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-19 06:56:01,639 INFO L158 Benchmark]: Toolchain (without parser) took 492129.52ms. Allocated memory was 115.3MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 85.9MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-19 06:56:01,639 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:56:01,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3862.25ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 85.8MB in the beginning and 62.4MB in the end (delta: 23.4MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. [2022-11-19 06:56:01,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 329.41ms. Allocated memory was 157.3MB in the beginning and 262.1MB in the end (delta: 104.9MB). Free memory was 62.4MB in the beginning and 170.3MB in the end (delta: -107.8MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-11-19 06:56:01,640 INFO L158 Benchmark]: Boogie Preprocessor took 331.88ms. Allocated memory is still 262.1MB. Free memory was 170.3MB in the beginning and 136.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-19 06:56:01,640 INFO L158 Benchmark]: RCFGBuilder took 7087.78ms. Allocated memory was 262.1MB in the beginning and 574.6MB in the end (delta: 312.5MB). Free memory was 136.7MB in the beginning and 289.5MB in the end (delta: -152.8MB). Peak memory consumption was 194.3MB. Max. memory is 16.1GB. [2022-11-19 06:56:01,641 INFO L158 Benchmark]: TraceAbstraction took 480509.62ms. Allocated memory was 574.6MB in the beginning and 3.7GB in the end (delta: 3.1GB). Free memory was 288.5MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2022-11-19 06:56:01,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3862.25ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 85.8MB in the beginning and 62.4MB in the end (delta: 23.4MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 329.41ms. Allocated memory was 157.3MB in the beginning and 262.1MB in the end (delta: 104.9MB). Free memory was 62.4MB in the beginning and 170.3MB in the end (delta: -107.8MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 331.88ms. Allocated memory is still 262.1MB. Free memory was 170.3MB in the beginning and 136.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * RCFGBuilder took 7087.78ms. Allocated memory was 262.1MB in the beginning and 574.6MB in the end (delta: 312.5MB). Free memory was 136.7MB in the beginning and 289.5MB in the end (delta: -152.8MB). Peak memory consumption was 194.3MB. Max. memory is 16.1GB. * TraceAbstraction took 480509.62ms. Allocated memory was 574.6MB in the beginning and 3.7GB in the end (delta: 3.1GB). Free memory was 288.5MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 06:56:01,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd --- 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-8393723 [2022-11-19 06:56:04,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:56:04,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:56:04,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:56:04,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:56:04,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:56:04,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:56:04,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:56:04,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:56:04,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:56:04,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:56:04,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:56:04,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:56:04,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:56:04,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:56:04,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:56:04,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:56:04,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:56:04,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:56:04,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:56:04,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:56:04,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:56:04,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:56:04,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:56:04,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:56:04,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:56:04,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:56:04,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:56:04,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:56:04,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:56:04,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:56:04,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:56:04,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:56:04,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:56:04,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:56:04,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:56:04,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:56:04,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:56:04,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:56:04,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:56:04,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:56:04,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 06:56:04,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:56:04,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:56:04,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:56:04,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:56:04,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:56:04,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:56:04,336 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:56:04,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:56:04,337 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:56:04,337 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:56:04,338 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:56:04,338 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:56:04,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:56:04,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:56:04,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:56:04,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:56:04,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:56:04,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:56:04,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:56:04,341 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:56:04,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:56:04,341 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:56:04,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:56:04,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:56:04,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:56:04,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:56:04,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:56:04,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:56:04,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:56:04,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:56:04,343 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:56:04,344 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:56:04,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:56:04,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:56:04,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:56:04,345 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_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd [2022-11-19 06:56:04,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:56:04,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:56:04,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:56:04,778 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:56:04,779 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:56:04,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-19 06:56:04,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data/af1a7be87/b64b3b1ffed0426fbc8403292f26217a/FLAGc148edb60 [2022-11-19 06:56:05,877 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:56:05,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-19 06:56:05,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data/af1a7be87/b64b3b1ffed0426fbc8403292f26217a/FLAGc148edb60 [2022-11-19 06:56:06,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/data/af1a7be87/b64b3b1ffed0426fbc8403292f26217a [2022-11-19 06:56:06,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:56:06,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:56:06,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:56:06,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:56:06,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:56:06,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:56:06" (1/1) ... [2022-11-19 06:56:06,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582e1a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:06, skipping insertion in model container [2022-11-19 06:56:06,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:56:06" (1/1) ... [2022-11-19 06:56:06,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:56:06,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:56:09,666 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-19 06:56:09,670 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-19 06:56:09,671 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-19 06:56:09,671 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-19 06:56:09,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:56:09,732 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 06:56:09,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:56:10,248 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-19 06:56:10,249 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-19 06:56:10,250 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-19 06:56:10,250 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-19 06:56:10,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:56:10,317 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:56:10,724 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-19 06:56:10,725 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-19 06:56:10,726 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-19 06:56:10,726 WARN L234 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_dae787bf-bb97-431e-a454-a86b673eee7f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-19 06:56:10,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:56:11,031 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:56:11,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11 WrapperNode [2022-11-19 06:56:11,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:56:11,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:56:11,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:56:11,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:56:11,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,383 INFO L138 Inliner]: procedures = 440, calls = 2260, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 4653 [2022-11-19 06:56:11,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:56:11,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:56:11,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:56:11,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:56:11,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:56:11,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:56:11,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:56:11,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:56:11,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (1/1) ... [2022-11-19 06:56:11,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:56:11,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:11,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:56:11,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:56:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_resume [2022-11-19 06:56:11,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_resume [2022-11-19 06:56:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 06:56:11,899 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 06:56:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:56:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:56:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 06:56:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 06:56:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_write_reg [2022-11-19 06:56:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_write_reg [2022-11-19 06:56:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:56:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:56:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2022-11-19 06:56:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2022-11-19 06:56:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read8 [2022-11-19 06:56:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read8 [2022-11-19 06:56:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:56:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:56:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:56:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:56:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2022-11-19 06:56:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2022-11-19 06:56:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-19 06:56:11,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-19 06:56:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_read_and_clear_stats [2022-11-19 06:56:11,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_read_and_clear_stats [2022-11-19 06:56:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_sync [2022-11-19 06:56:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_sync [2022-11-19 06:56:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 06:56:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 06:56:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 06:56:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 06:56:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 06:56:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 06:56:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:56:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:56:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 06:56:11,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 06:56:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:56:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-19 06:56:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:56:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 06:56:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 06:56:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:56:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:56:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_lists [2022-11-19 06:56:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_lists [2022-11-19 06:56:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_close [2022-11-19 06:56:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_close [2022-11-19 06:56:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_65 [2022-11-19 06:56:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_65 [2022-11-19 06:56:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:56:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:56:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_print [2022-11-19 06:56:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_print [2022-11-19 06:56:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 06:56:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 06:56:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-19 06:56:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-19 06:56:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver [2022-11-19 06:56:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver [2022-11-19 06:56:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_probe1 [2022-11-19 06:56:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_probe1 [2022-11-19 06:56:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 06:56:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 06:56:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:56:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:56:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 06:56:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 06:56:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 06:56:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 06:56:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 06:56:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 06:56:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_timer [2022-11-19 06:56:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_timer [2022-11-19 06:56:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_timer [2022-11-19 06:56:11,916 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_timer [2022-11-19 06:56:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2022-11-19 06:56:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2022-11-19 06:56:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_stop [2022-11-19 06:56:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_stop [2022-11-19 06:56:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 06:56:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 06:56:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 06:56:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 06:56:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_remove_one [2022-11-19 06:56:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_remove_one [2022-11-19 06:56:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_get_skb [2022-11-19 06:56:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_get_skb [2022-11-19 06:56:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_byte [2022-11-19 06:56:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_byte [2022-11-19 06:56:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:56:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:56:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:56:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-19 06:56:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-19 06:56:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_poll [2022-11-19 06:56:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_poll [2022-11-19 06:56:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 06:56:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 06:56:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:56:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:56:11,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:56:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:56:11,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:56:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:56:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:56:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:56:11,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:56:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_free_lists [2022-11-19 06:56:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_free_lists [2022-11-19 06:56:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 06:56:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 06:56:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:56:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:56:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 06:56:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 06:56:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-19 06:56:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-19 06:56:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_store_skb [2022-11-19 06:56:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_store_skb [2022-11-19 06:56:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_tx_timeout [2022-11-19 06:56:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_tx_timeout [2022-11-19 06:56:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:56:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:56:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 06:56:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 06:56:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2022-11-19 06:56:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2022-11-19 06:56:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 06:56:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_up [2022-11-19 06:56:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_up [2022-11-19 06:56:11,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-19 06:56:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:56:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:56:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:56:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:56:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 06:56:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 06:56:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-19 06:56:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-19 06:56:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_handle_interrupt [2022-11-19 06:56:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_handle_interrupt [2022-11-19 06:56:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_start [2022-11-19 06:56:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_start [2022-11-19 06:56:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 06:56:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 06:56:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_finish_auto_neg [2022-11-19 06:56:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_finish_auto_neg [2022-11-19 06:56:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 06:56:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 06:56:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 06:56:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 06:56:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-19 06:56:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-19 06:56:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_start_link [2022-11-19 06:56:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_start_link [2022-11-19 06:56:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:56:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_multicast_list [2022-11-19 06:56:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_multicast_list [2022-11-19 06:56:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:56:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:56:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:56:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 06:56:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 06:56:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2022-11-19 06:56:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2022-11-19 06:56:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 06:56:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 06:56:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 06:56:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 06:56:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:56:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_print_list [2022-11-19 06:56:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_print_list [2022-11-19 06:56:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write16 [2022-11-19 06:56:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write16 [2022-11-19 06:56:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-19 06:56:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-19 06:56:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:56:11,945 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:56:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 06:56:11,945 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 06:56:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 06:56:11,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 06:56:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-19 06:56:11,945 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-19 06:56:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_finish_reset [2022-11-19 06:56:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_finish_reset [2022-11-19 06:56:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write32 [2022-11-19 06:56:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write32 [2022-11-19 06:56:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:56:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:56:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 06:56:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 06:56:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_mac [2022-11-19 06:56:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_mac [2022-11-19 06:56:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-19 06:56:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-19 06:56:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_start [2022-11-19 06:56:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_start [2022-11-19 06:56:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read32 [2022-11-19 06:56:11,948 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read32 [2022-11-19 06:56:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write8 [2022-11-19 06:56:11,948 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write8 [2022-11-19 06:56:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:56:11,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:56:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_down [2022-11-19 06:56:11,948 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_down [2022-11-19 06:56:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 06:56:11,949 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 06:56:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_adapter [2022-11-19 06:56:11,949 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_adapter [2022-11-19 06:56:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_send_data [2022-11-19 06:56:11,949 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_send_data [2022-11-19 06:56:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_reset [2022-11-19 06:56:11,950 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_reset [2022-11-19 06:56:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_read_reg [2022-11-19 06:56:11,950 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_read_reg [2022-11-19 06:56:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 06:56:11,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 06:56:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_open [2022-11-19 06:56:11,950 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_open [2022-11-19 06:56:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 06:56:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 06:56:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 06:56:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 06:56:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-19 06:56:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-19 06:56:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-19 06:56:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-19 06:56:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-19 06:56:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-19 06:56:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-19 06:56:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 06:56:11,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 06:56:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 06:56:11,957 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 06:56:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-19 06:56:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-19 06:56:12,951 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:56:12,956 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:56:24,423 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:56:50,498 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume 32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-19 06:56:50,498 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume !(32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-19 06:56:50,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957-1: tlan_eisa_probe_~device_id~1#1 := tlan_eisa_probe_#t~ret331#1;havoc tlan_eisa_probe_#t~ret331#1; [2022-11-19 06:56:50,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957: SUMMARY for call tlan_eisa_probe_#t~ret331#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-19 06:56:50,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6991: tlan_eisa_probe_~irq~0#1 := 9bv32; [2022-11-19 06:56:50,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0);havoc tlan_eisa_probe_#t~nondet328#1; [2022-11-19 06:56:50,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-19 06:56:50,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume 0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset); [2022-11-19 06:56:50,499 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume !(0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset)); [2022-11-19 06:56:50,500 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume 8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1); [2022-11-19 06:56:50,500 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume !(8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1)); [2022-11-19 06:56:50,500 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume ~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2022-11-19 06:56:50,500 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume !~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2022-11-19 06:56:50,500 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976-2: SUMMARY for call tlan_eisa_probe_#t~ret334#1 := inb(~bvadd32(3264bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-19 06:56:50,500 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet333#1; [2022-11-19 06:56:50,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume !(16bv32 == ~debug~0); [2022-11-19 06:56:50,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927-1: tlan_eisa_probe_~tmp___0~12#1 := tlan_eisa_probe_#t~ret326#1;havoc tlan_eisa_probe_#t~ret326#1;havoc tlan_eisa_probe_#t~nondet327#1; [2022-11-19 06:56:50,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927: SUMMARY for call tlan_eisa_probe_#t~ret326#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-19 06:56:50,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume 64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-19 06:56:50,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume !(64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-19 06:56:50,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6961: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-19 06:56:50,502 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2022-11-19 06:56:50,502 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-19 06:56:50,502 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6995: tlan_eisa_probe_~irq~0#1 := 10bv32; [2022-11-19 06:56:50,502 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947-1: tlan_eisa_probe_~tmp___2~2#1 := tlan_eisa_probe_#t~ret330#1;havoc tlan_eisa_probe_#t~ret330#1; [2022-11-19 06:56:50,502 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947: SUMMARY for call tlan_eisa_probe_#t~ret330#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-19 06:56:50,502 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7014: SUMMARY for call tlan_eisa_probe_#t~ret335#1 := tlan_probe1(0bv64, 0bv64, tlan_eisa_probe_~ioaddr~0#1, tlan_eisa_probe_~irq~0#1, 12bv32, 0bv64, 0bv64); srcloc: null [2022-11-19 06:56:50,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume 128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-19 06:56:50,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume !(128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-19 06:56:50,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6932-1: call tlan_eisa_probe_#t~ret329#1.base, tlan_eisa_probe_#t~ret329#1.offset := __request_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64, ~#tlan_signature~0.base, ~#tlan_signature~0.offset, 0bv32);tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset := tlan_eisa_probe_#t~ret329#1.base, tlan_eisa_probe_#t~ret329#1.offset;havoc tlan_eisa_probe_#t~ret329#1.base, tlan_eisa_probe_#t~ret329#1.offset; [2022-11-19 06:56:50,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume 4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1); [2022-11-19 06:56:50,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume !(4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1)); [2022-11-19 06:56:50,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6999: tlan_eisa_probe_~irq~0#1 := 11bv32; [2022-11-19 06:56:50,504 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6983: tlan_eisa_probe_~tmp___4~0#1 := tlan_eisa_probe_#t~ret334#1;havoc tlan_eisa_probe_#t~ret334#1; [2022-11-19 06:56:50,504 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967-1: tlan_eisa_probe_~tmp___3~1#1 := tlan_eisa_probe_#t~ret332#1;havoc tlan_eisa_probe_#t~ret332#1; [2022-11-19 06:56:50,504 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967: SUMMARY for call tlan_eisa_probe_#t~ret332#1 := inb(~bvadd32(3204bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-19 06:56:50,504 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7033-1: tlan_eisa_probe_~ioaddr~0#1 := ~bvadd64(4096bv64, tlan_eisa_probe_~ioaddr~0#1); [2022-11-19 06:56:50,504 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6951: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-19 06:56:50,504 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2022-11-19 06:56:50,505 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-19 06:56:50,505 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet336#1; [2022-11-19 06:56:50,505 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume !(16bv32 == ~debug~0); [2022-11-19 06:56:50,505 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume 1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1); [2022-11-19 06:56:50,505 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume !(1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1)); [2022-11-19 06:56:50,505 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume 16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-19 06:56:50,505 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume !(16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-19 06:56:50,506 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920-1: tlan_eisa_probe_~tmp~35#1 := tlan_eisa_probe_#t~ret324#1;havoc tlan_eisa_probe_#t~ret324#1;havoc tlan_eisa_probe_#t~nondet325#1; [2022-11-19 06:56:50,506 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920: SUMMARY for call tlan_eisa_probe_#t~ret324#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-19 06:56:50,506 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6987: tlan_eisa_probe_~irq~0#1 := 5bv32; [2022-11-19 06:56:50,506 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet337#1; [2022-11-19 06:56:50,506 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume !(16bv32 == ~debug~0); [2022-11-19 06:56:50,507 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-19 06:56:50,507 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7021: tlan_eisa_probe_~rc~2#1 := tlan_eisa_probe_#t~ret335#1;havoc tlan_eisa_probe_#t~ret335#1; [2022-11-19 06:56:50,633 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:56:50,656 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:56:50,656 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:56:50,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:56:50 BoogieIcfgContainer [2022-11-19 06:56:50,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:56:50,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:56:50,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:56:50,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:56:50,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:56:06" (1/3) ... [2022-11-19 06:56:50,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edcb0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:56:50, skipping insertion in model container [2022-11-19 06:56:50,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:11" (2/3) ... [2022-11-19 06:56:50,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edcb0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:56:50, skipping insertion in model container [2022-11-19 06:56:50,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:56:50" (3/3) ... [2022-11-19 06:56:50,669 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-19 06:56:50,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:56:50,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 06:56:50,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:56:50,780 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70ded24f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:56:50,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 06:56:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 1968 states, 1256 states have (on average 1.2468152866242037) internal successors, (1566), 1312 states have internal predecessors, (1566), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) [2022-11-19 06:56:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 06:56:50,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:50,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 06:56:50,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:56:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash 737863230, now seen corresponding path program 1 times [2022-11-19 06:56:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:56:50,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003951226] [2022-11-19 06:56:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:50,828 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 [2022-11-19 06:56:50,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:56:50,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:56:50,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:56:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:52,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:56:52,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:56:52,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:52,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:56:52,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003951226] [2022-11-19 06:56:52,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003951226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:52,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:52,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:56:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056648963] [2022-11-19 06:56:52,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:52,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:56:52,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:56:52,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:56:52,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:52,862 INFO L87 Difference]: Start difference. First operand has 1968 states, 1256 states have (on average 1.2468152866242037) internal successors, (1566), 1312 states have internal predecessors, (1566), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:56:55,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:55,951 INFO L93 Difference]: Finished difference Result 5631 states and 8198 transitions. [2022-11-19 06:56:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:56:55,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-19 06:56:55,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:56,002 INFO L225 Difference]: With dead ends: 5631 [2022-11-19 06:56:56,002 INFO L226 Difference]: Without dead ends: 3656 [2022-11-19 06:56:56,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:56,044 INFO L413 NwaCegarLoop]: 3865 mSDtfsCounter, 2375 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 6523 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:56,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2375 Valid, 6523 Invalid, 119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 06:56:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2022-11-19 06:56:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3614. [2022-11-19 06:56:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 2325 states have (on average 1.2258064516129032) internal successors, (2850), 2426 states have internal predecessors, (2850), 1080 states have call successors, (1080), 207 states have call predecessors, (1080), 206 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-19 06:56:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5016 transitions. [2022-11-19 06:56:56,475 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5016 transitions. Word has length 52 [2022-11-19 06:56:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:56,476 INFO L495 AbstractCegarLoop]: Abstraction has 3614 states and 5016 transitions. [2022-11-19 06:56:56,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:56:56,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5016 transitions. [2022-11-19 06:56:56,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 06:56:56,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:56,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 06:56:56,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:56:56,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:56:56,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:56:56,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 722344512, now seen corresponding path program 1 times [2022-11-19 06:56:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:56:56,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583005686] [2022-11-19 06:56:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:56,715 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 [2022-11-19 06:56:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:56:56,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:56:56,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:56:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:58,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:56:58,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:56:59,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:59,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:56:59,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583005686] [2022-11-19 06:56:59,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583005686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:59,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:59,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:56:59,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546097340] [2022-11-19 06:56:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:59,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:56:59,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:56:59,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:56:59,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:56:59,101 INFO L87 Difference]: Start difference. First operand 3614 states and 5016 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:56:59,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:59,726 INFO L93 Difference]: Finished difference Result 3620 states and 5021 transitions. [2022-11-19 06:56:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:56:59,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-19 06:56:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:59,751 INFO L225 Difference]: With dead ends: 3620 [2022-11-19 06:56:59,751 INFO L226 Difference]: Without dead ends: 3618 [2022-11-19 06:56:59,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:56:59,756 INFO L413 NwaCegarLoop]: 2731 mSDtfsCounter, 2701 mSDsluCounter, 5450 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 8181 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:59,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 8181 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:56:59,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2022-11-19 06:57:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 3618. [2022-11-19 06:57:00,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 2328 states have (on average 1.2255154639175259) internal successors, (2853), 2429 states have internal predecessors, (2853), 1080 states have call successors, (1080), 208 states have call predecessors, (1080), 207 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-19 06:57:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5019 transitions. [2022-11-19 06:57:00,083 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5019 transitions. Word has length 52 [2022-11-19 06:57:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:00,085 INFO L495 AbstractCegarLoop]: Abstraction has 3618 states and 5019 transitions. [2022-11-19 06:57:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 06:57:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5019 transitions. [2022-11-19 06:57:00,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 06:57:00,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:00,095 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 06:57:00,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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)] Ended with exit code 0 [2022-11-19 06:57:00,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:00,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:00,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1060299599, now seen corresponding path program 1 times [2022-11-19 06:57:00,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:00,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963876617] [2022-11-19 06:57:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:00,319 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 [2022-11-19 06:57:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:00,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:00,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:02,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:02,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:57:02,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:57:02,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:02,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963876617] [2022-11-19 06:57:02,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963876617] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:02,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:02,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770278019] [2022-11-19 06:57:02,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:02,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:02,929 INFO L87 Difference]: Start difference. First operand 3618 states and 5019 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 06:57:03,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:03,507 INFO L93 Difference]: Finished difference Result 3624 states and 5024 transitions. [2022-11-19 06:57:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:03,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-19 06:57:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:03,535 INFO L225 Difference]: With dead ends: 3624 [2022-11-19 06:57:03,536 INFO L226 Difference]: Without dead ends: 3622 [2022-11-19 06:57:03,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:03,543 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2712 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:03,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2712 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-11-19 06:57:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-11-19 06:57:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 2331 states have (on average 1.2252252252252251) internal successors, (2856), 2432 states have internal predecessors, (2856), 1080 states have call successors, (1080), 209 states have call predecessors, (1080), 208 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-19 06:57:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5022 transitions. [2022-11-19 06:57:03,900 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5022 transitions. Word has length 57 [2022-11-19 06:57:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:03,903 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 5022 transitions. [2022-11-19 06:57:03,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 06:57:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5022 transitions. [2022-11-19 06:57:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 06:57:03,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:03,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-19 06:57:03,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:04,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:04,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:04,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:04,125 INFO L85 PathProgramCache]: Analyzing trace with hash 962167648, now seen corresponding path program 1 times [2022-11-19 06:57:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:04,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751538196] [2022-11-19 06:57:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:04,129 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 [2022-11-19 06:57:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:04,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:04,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:05,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:05,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 06:57:06,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 06:57:06,572 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:06,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751538196] [2022-11-19 06:57:06,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751538196] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:06,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:06,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:06,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837294064] [2022-11-19 06:57:06,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:06,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:06,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:06,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:06,574 INFO L87 Difference]: Start difference. First operand 3622 states and 5022 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:57:07,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:07,109 INFO L93 Difference]: Finished difference Result 3628 states and 5027 transitions. [2022-11-19 06:57:07,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:07,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-11-19 06:57:07,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:07,131 INFO L225 Difference]: With dead ends: 3628 [2022-11-19 06:57:07,131 INFO L226 Difference]: Without dead ends: 3626 [2022-11-19 06:57:07,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:07,137 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:07,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2022-11-19 06:57:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3626. [2022-11-19 06:57:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 2334 states have (on average 1.224935732647815) internal successors, (2859), 2435 states have internal predecessors, (2859), 1080 states have call successors, (1080), 210 states have call predecessors, (1080), 209 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-19 06:57:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 5025 transitions. [2022-11-19 06:57:07,547 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 5025 transitions. Word has length 62 [2022-11-19 06:57:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:07,548 INFO L495 AbstractCegarLoop]: Abstraction has 3626 states and 5025 transitions. [2022-11-19 06:57:07,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:57:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 5025 transitions. [2022-11-19 06:57:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 06:57:07,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:07,552 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2022-11-19 06:57:07,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:07,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:07,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash -881435217, now seen corresponding path program 1 times [2022-11-19 06:57:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:07,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093323438] [2022-11-19 06:57:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:07,772 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 [2022-11-19 06:57:07,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:07,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:07,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:09,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:09,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 06:57:09,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 06:57:10,072 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:10,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093323438] [2022-11-19 06:57:10,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093323438] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:10,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:10,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:10,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83940762] [2022-11-19 06:57:10,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:10,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:10,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:10,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:10,075 INFO L87 Difference]: Start difference. First operand 3626 states and 5025 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 06:57:10,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:10,665 INFO L93 Difference]: Finished difference Result 3632 states and 5030 transitions. [2022-11-19 06:57:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:10,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2022-11-19 06:57:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:10,690 INFO L225 Difference]: With dead ends: 3632 [2022-11-19 06:57:10,691 INFO L226 Difference]: Without dead ends: 3630 [2022-11-19 06:57:10,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:10,694 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:10,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2710 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2022-11-19 06:57:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 3630. [2022-11-19 06:57:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 2337 states have (on average 1.2246469833119384) internal successors, (2862), 2438 states have internal predecessors, (2862), 1080 states have call successors, (1080), 211 states have call predecessors, (1080), 210 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-19 06:57:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5028 transitions. [2022-11-19 06:57:11,108 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5028 transitions. Word has length 67 [2022-11-19 06:57:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:11,109 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 5028 transitions. [2022-11-19 06:57:11,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 06:57:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5028 transitions. [2022-11-19 06:57:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 06:57:11,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:11,111 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2022-11-19 06:57:11,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:11,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:11,332 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:11,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:11,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1304578944, now seen corresponding path program 1 times [2022-11-19 06:57:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:11,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783373121] [2022-11-19 06:57:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:11,335 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 [2022-11-19 06:57:11,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:11,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:11,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:12,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:12,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-19 06:57:13,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-19 06:57:13,756 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:13,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783373121] [2022-11-19 06:57:13,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783373121] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:13,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:13,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:13,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091282928] [2022-11-19 06:57:13,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:13,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:13,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:13,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:13,759 INFO L87 Difference]: Start difference. First operand 3630 states and 5028 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 06:57:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:14,468 INFO L93 Difference]: Finished difference Result 3636 states and 5033 transitions. [2022-11-19 06:57:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-11-19 06:57:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:14,490 INFO L225 Difference]: With dead ends: 3636 [2022-11-19 06:57:14,490 INFO L226 Difference]: Without dead ends: 3634 [2022-11-19 06:57:14,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:14,493 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:14,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2709 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-11-19 06:57:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2022-11-19 06:57:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 2340 states have (on average 1.2243589743589745) internal successors, (2865), 2441 states have internal predecessors, (2865), 1080 states have call successors, (1080), 212 states have call predecessors, (1080), 211 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-19 06:57:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5031 transitions. [2022-11-19 06:57:14,939 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5031 transitions. Word has length 72 [2022-11-19 06:57:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:14,940 INFO L495 AbstractCegarLoop]: Abstraction has 3634 states and 5031 transitions. [2022-11-19 06:57:14,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 06:57:14,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5031 transitions. [2022-11-19 06:57:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 06:57:14,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:14,941 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 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] [2022-11-19 06:57:14,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:15,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:15,157 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 358486031, now seen corresponding path program 1 times [2022-11-19 06:57:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:15,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069553682] [2022-11-19 06:57:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:15,158 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 [2022-11-19 06:57:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:15,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:15,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:16,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:16,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-19 06:57:17,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-19 06:57:17,500 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:17,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069553682] [2022-11-19 06:57:17,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069553682] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:17,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:17,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:17,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997607038] [2022-11-19 06:57:17,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:17,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:17,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:17,502 INFO L87 Difference]: Start difference. First operand 3634 states and 5031 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:57:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:18,190 INFO L93 Difference]: Finished difference Result 3640 states and 5036 transitions. [2022-11-19 06:57:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:18,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2022-11-19 06:57:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:18,213 INFO L225 Difference]: With dead ends: 3640 [2022-11-19 06:57:18,213 INFO L226 Difference]: Without dead ends: 3638 [2022-11-19 06:57:18,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:18,216 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:18,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2708 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-11-19 06:57:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2022-11-19 06:57:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 2343 states have (on average 1.2240717029449424) internal successors, (2868), 2444 states have internal predecessors, (2868), 1080 states have call successors, (1080), 213 states have call predecessors, (1080), 212 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-19 06:57:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5034 transitions. [2022-11-19 06:57:18,723 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5034 transitions. Word has length 77 [2022-11-19 06:57:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:18,725 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5034 transitions. [2022-11-19 06:57:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:57:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5034 transitions. [2022-11-19 06:57:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 06:57:18,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:18,730 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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] [2022-11-19 06:57:18,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:18,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:18,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -480203360, now seen corresponding path program 1 times [2022-11-19 06:57:18,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:18,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486253156] [2022-11-19 06:57:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:18,955 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 [2022-11-19 06:57:18,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:18,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:18,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:20,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:20,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-19 06:57:21,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-19 06:57:21,401 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:21,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486253156] [2022-11-19 06:57:21,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486253156] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:21,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:21,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:21,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896859704] [2022-11-19 06:57:21,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:21,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:21,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:21,403 INFO L87 Difference]: Start difference. First operand 3638 states and 5034 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:57:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:22,476 INFO L93 Difference]: Finished difference Result 6705 states and 9602 transitions. [2022-11-19 06:57:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:57:22,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2022-11-19 06:57:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:22,514 INFO L225 Difference]: With dead ends: 6705 [2022-11-19 06:57:22,514 INFO L226 Difference]: Without dead ends: 6703 [2022-11-19 06:57:22,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:22,519 INFO L413 NwaCegarLoop]: 3608 mSDtfsCounter, 2328 mSDsluCounter, 9945 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 13553 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:22,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2333 Valid, 13553 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6703 states. [2022-11-19 06:57:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6703 to 6689. [2022-11-19 06:57:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6689 states, 4296 states have (on average 1.220903165735568) internal successors, (5245), 4493 states have internal predecessors, (5245), 1980 states have call successors, (1980), 422 states have call predecessors, (1980), 410 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-19 06:57:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6689 states to 6689 states and 9589 transitions. [2022-11-19 06:57:23,612 INFO L78 Accepts]: Start accepts. Automaton has 6689 states and 9589 transitions. Word has length 82 [2022-11-19 06:57:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:23,613 INFO L495 AbstractCegarLoop]: Abstraction has 6689 states and 9589 transitions. [2022-11-19 06:57:23,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:57:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 6689 states and 9589 transitions. [2022-11-19 06:57:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 06:57:23,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:23,619 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 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] [2022-11-19 06:57:23,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:23,837 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2018658944, now seen corresponding path program 1 times [2022-11-19 06:57:23,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:23,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830645476] [2022-11-19 06:57:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:23,839 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 [2022-11-19 06:57:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:23,840 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:23,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:25,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 06:57:25,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-19 06:57:26,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-19 06:57:27,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:27,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830645476] [2022-11-19 06:57:27,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830645476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:57:27,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [479623979] [2022-11-19 06:57:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:27,206 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:57:27,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:57:27,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:57:27,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-19 06:57:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:28,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:28,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-19 06:57:29,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-19 06:57:30,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [479623979] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:30,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:57:30,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 16, 4] total 24 [2022-11-19 06:57:30,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020399942] [2022-11-19 06:57:30,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:30,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:30,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:30,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:30,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:57:30,223 INFO L87 Difference]: Start difference. First operand 6689 states and 9589 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:57:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:31,477 INFO L93 Difference]: Finished difference Result 6699 states and 9598 transitions. [2022-11-19 06:57:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:31,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2022-11-19 06:57:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:31,511 INFO L225 Difference]: With dead ends: 6699 [2022-11-19 06:57:31,511 INFO L226 Difference]: Without dead ends: 6697 [2022-11-19 06:57:31,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-11-19 06:57:31,516 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2695 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2699 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:31,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2699 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6697 states. [2022-11-19 06:57:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6697 to 6697. [2022-11-19 06:57:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6697 states, 4302 states have (on average 1.2205950720595071) internal successors, (5251), 4499 states have internal predecessors, (5251), 1980 states have call successors, (1980), 424 states have call predecessors, (1980), 412 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-19 06:57:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 9595 transitions. [2022-11-19 06:57:32,723 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 9595 transitions. Word has length 101 [2022-11-19 06:57:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:32,724 INFO L495 AbstractCegarLoop]: Abstraction has 6697 states and 9595 transitions. [2022-11-19 06:57:32,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:57:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 9595 transitions. [2022-11-19 06:57:32,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 06:57:32,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:32,728 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2022-11-19 06:57:32,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:32,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:57:33,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:57:33,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:33,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:33,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1024954688, now seen corresponding path program 1 times [2022-11-19 06:57:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:33,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355710601] [2022-11-19 06:57:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:33,147 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 [2022-11-19 06:57:33,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:33,148 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:33,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:34,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:34,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-19 06:57:35,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-19 06:57:35,579 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:35,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355710601] [2022-11-19 06:57:35,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355710601] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:35,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:35,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:35,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163087855] [2022-11-19 06:57:35,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:35,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:35,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:35,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:35,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:35,581 INFO L87 Difference]: Start difference. First operand 6697 states and 9595 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:57:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:36,649 INFO L93 Difference]: Finished difference Result 6707 states and 9604 transitions. [2022-11-19 06:57:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:36,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2022-11-19 06:57:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:36,680 INFO L225 Difference]: With dead ends: 6707 [2022-11-19 06:57:36,680 INFO L226 Difference]: Without dead ends: 6705 [2022-11-19 06:57:36,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:36,684 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:36,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2022-11-19 06:57:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 6705. [2022-11-19 06:57:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6705 states, 4308 states have (on average 1.2202878365831011) internal successors, (5257), 4505 states have internal predecessors, (5257), 1980 states have call successors, (1980), 426 states have call predecessors, (1980), 414 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-19 06:57:37,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 9601 transitions. [2022-11-19 06:57:37,913 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 9601 transitions. Word has length 92 [2022-11-19 06:57:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:37,913 INFO L495 AbstractCegarLoop]: Abstraction has 6705 states and 9601 transitions. [2022-11-19 06:57:37,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:57:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 9601 transitions. [2022-11-19 06:57:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 06:57:37,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:37,917 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 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] [2022-11-19 06:57:37,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:38,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:38,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:38,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1308484401, now seen corresponding path program 1 times [2022-11-19 06:57:38,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:38,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188838094] [2022-11-19 06:57:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:38,135 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 [2022-11-19 06:57:38,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:38,136 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:38,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:39,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:39,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-19 06:57:40,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-19 06:57:40,756 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:40,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188838094] [2022-11-19 06:57:40,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188838094] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:40,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:40,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369918506] [2022-11-19 06:57:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:40,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:40,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:40,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:40,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:40,759 INFO L87 Difference]: Start difference. First operand 6705 states and 9601 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:57:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:41,827 INFO L93 Difference]: Finished difference Result 6715 states and 9610 transitions. [2022-11-19 06:57:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:41,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2022-11-19 06:57:41,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:41,860 INFO L225 Difference]: With dead ends: 6715 [2022-11-19 06:57:41,860 INFO L226 Difference]: Without dead ends: 6713 [2022-11-19 06:57:41,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:41,865 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:41,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:41,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6713 states. [2022-11-19 06:57:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6713 to 6713. [2022-11-19 06:57:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6713 states, 4314 states have (on average 1.2199814557255448) internal successors, (5263), 4511 states have internal predecessors, (5263), 1980 states have call successors, (1980), 428 states have call predecessors, (1980), 416 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-19 06:57:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 9607 transitions. [2022-11-19 06:57:42,904 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 9607 transitions. Word has length 97 [2022-11-19 06:57:42,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:42,905 INFO L495 AbstractCegarLoop]: Abstraction has 6713 states and 9607 transitions. [2022-11-19 06:57:42,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:57:42,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 9607 transitions. [2022-11-19 06:57:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 06:57:42,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:42,907 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 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] [2022-11-19 06:57:42,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:43,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:43,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:43,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1333458912, now seen corresponding path program 1 times [2022-11-19 06:57:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:43,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324280029] [2022-11-19 06:57:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:43,123 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 [2022-11-19 06:57:43,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:43,129 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:43,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:44,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:44,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-19 06:57:45,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-19 06:57:45,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:45,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324280029] [2022-11-19 06:57:45,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324280029] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:45,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:45,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:45,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759367170] [2022-11-19 06:57:45,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:45,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:45,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:45,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:45,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:45,898 INFO L87 Difference]: Start difference. First operand 6713 states and 9607 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:57:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:46,992 INFO L93 Difference]: Finished difference Result 6723 states and 9616 transitions. [2022-11-19 06:57:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:46,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2022-11-19 06:57:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:47,022 INFO L225 Difference]: With dead ends: 6723 [2022-11-19 06:57:47,023 INFO L226 Difference]: Without dead ends: 6719 [2022-11-19 06:57:47,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:47,028 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2702 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:47,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 8183 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6719 states. [2022-11-19 06:57:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6719 to 6719. [2022-11-19 06:57:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6719 states, 4319 states have (on average 1.21949525353091) internal successors, (5267), 4515 states have internal predecessors, (5267), 1980 states have call successors, (1980), 430 states have call predecessors, (1980), 417 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-19 06:57:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6719 states to 6719 states and 9611 transitions. [2022-11-19 06:57:48,213 INFO L78 Accepts]: Start accepts. Automaton has 6719 states and 9611 transitions. Word has length 102 [2022-11-19 06:57:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:48,213 INFO L495 AbstractCegarLoop]: Abstraction has 6719 states and 9611 transitions. [2022-11-19 06:57:48,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 06:57:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6719 states and 9611 transitions. [2022-11-19 06:57:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-19 06:57:48,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:48,216 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 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] [2022-11-19 06:57:48,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:48,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:48,440 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash 796030767, now seen corresponding path program 1 times [2022-11-19 06:57:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:48,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294907385] [2022-11-19 06:57:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:48,443 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 [2022-11-19 06:57:48,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:48,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:48,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:50,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:57:50,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-19 06:57:50,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-19 06:57:51,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:51,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294907385] [2022-11-19 06:57:51,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294907385] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:57:51,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:57:51,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 06:57:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582007772] [2022-11-19 06:57:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:51,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:57:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:57:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:57:51,165 INFO L87 Difference]: Start difference. First operand 6719 states and 9611 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:57:52,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:52,375 INFO L93 Difference]: Finished difference Result 6725 states and 9616 transitions. [2022-11-19 06:57:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:52,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 107 [2022-11-19 06:57:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:52,403 INFO L225 Difference]: With dead ends: 6725 [2022-11-19 06:57:52,403 INFO L226 Difference]: Without dead ends: 6631 [2022-11-19 06:57:52,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:57:52,408 INFO L413 NwaCegarLoop]: 2735 mSDtfsCounter, 2702 mSDsluCounter, 5451 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 8186 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:52,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 8186 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:52,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2022-11-19 06:57:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6631. [2022-11-19 06:57:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6631 states, 4268 states have (on average 1.2204779756326147) internal successors, (5209), 4461 states have internal predecessors, (5209), 1959 states have call successors, (1959), 413 states have call predecessors, (1959), 401 states have return successors, (2346), 1861 states have call predecessors, (2346), 1956 states have call successors, (2346) [2022-11-19 06:57:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 9514 transitions. [2022-11-19 06:57:53,444 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 9514 transitions. Word has length 107 [2022-11-19 06:57:53,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:53,444 INFO L495 AbstractCegarLoop]: Abstraction has 6631 states and 9514 transitions. [2022-11-19 06:57:53,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:57:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 9514 transitions. [2022-11-19 06:57:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-19 06:57:53,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:53,448 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:57:53,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:57:53,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:57:53,668 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:57:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:53,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1447345340, now seen corresponding path program 1 times [2022-11-19 06:57:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:57:53,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137526268] [2022-11-19 06:57:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:53,670 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 [2022-11-19 06:57:53,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:57:53,673 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:57:53,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (16)] Waiting until timeout for monitored process [2022-11-19 06:57:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:55,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 06:57:55,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-19 06:57:56,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:57:56,562 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:57:56,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137526268] [2022-11-19 06:57:56,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137526268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:56,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:57:56,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-19 06:57:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458493156] [2022-11-19 06:57:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:56,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:57:56,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:57:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:57:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:57:56,565 INFO L87 Difference]: Start difference. First operand 6631 states and 9514 transitions. Second operand has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-19 06:58:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:00,257 INFO L93 Difference]: Finished difference Result 13316 states and 19103 transitions. [2022-11-19 06:58:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:58:00,258 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2022-11-19 06:58:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:00,289 INFO L225 Difference]: With dead ends: 13316 [2022-11-19 06:58:00,289 INFO L226 Difference]: Without dead ends: 6702 [2022-11-19 06:58:00,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:58:00,344 INFO L413 NwaCegarLoop]: 2745 mSDtfsCounter, 115 mSDsluCounter, 27200 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 29945 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:00,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 29945 Invalid, 474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 06:58:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2022-11-19 06:58:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 6631. [2022-11-19 06:58:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6631 states, 4268 states have (on average 1.2202436738519213) internal successors, (5208), 4460 states have internal predecessors, (5208), 1959 states have call successors, (1959), 413 states have call predecessors, (1959), 401 states have return successors, (2346), 1861 states have call predecessors, (2346), 1956 states have call successors, (2346) [2022-11-19 06:58:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 9513 transitions. [2022-11-19 06:58:01,668 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 9513 transitions. Word has length 150 [2022-11-19 06:58:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:01,669 INFO L495 AbstractCegarLoop]: Abstraction has 6631 states and 9513 transitions. [2022-11-19 06:58:01,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-19 06:58:01,669 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 9513 transitions. [2022-11-19 06:58:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 06:58:01,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:01,672 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:01,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (16)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:01,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:58:01,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:58:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1257777345, now seen corresponding path program 1 times [2022-11-19 06:58:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:01,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125501716] [2022-11-19 06:58:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:01,890 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 [2022-11-19 06:58:01,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:01,891 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:58:01,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (17)] Waiting until timeout for monitored process [2022-11-19 06:58:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:03,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 06:58:03,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-19 06:58:04,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:04,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:04,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125501716] [2022-11-19 06:58:04,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125501716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:04,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:04,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 06:58:04,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890210264] [2022-11-19 06:58:04,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:04,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:58:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:04,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:58:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:58:04,660 INFO L87 Difference]: Start difference. First operand 6631 states and 9513 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-19 06:58:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:09,734 INFO L93 Difference]: Finished difference Result 13787 states and 19803 transitions. [2022-11-19 06:58:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 06:58:09,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 154 [2022-11-19 06:58:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:09,773 INFO L225 Difference]: With dead ends: 13787 [2022-11-19 06:58:09,773 INFO L226 Difference]: Without dead ends: 7173 [2022-11-19 06:58:09,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2022-11-19 06:58:09,819 INFO L413 NwaCegarLoop]: 2833 mSDtfsCounter, 281 mSDsluCounter, 33488 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 36321 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:09,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 36321 Invalid, 815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [114 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 06:58:09,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7173 states. [2022-11-19 06:58:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7173 to 6675. [2022-11-19 06:58:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6675 states, 4300 states have (on average 1.2186046511627906) internal successors, (5240), 4492 states have internal predecessors, (5240), 1967 states have call successors, (1967), 413 states have call predecessors, (1967), 405 states have return successors, (2358), 1873 states have call predecessors, (2358), 1964 states have call successors, (2358) [2022-11-19 06:58:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6675 states to 6675 states and 9565 transitions. [2022-11-19 06:58:11,022 INFO L78 Accepts]: Start accepts. Automaton has 6675 states and 9565 transitions. Word has length 154 [2022-11-19 06:58:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:11,023 INFO L495 AbstractCegarLoop]: Abstraction has 6675 states and 9565 transitions. [2022-11-19 06:58:11,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-19 06:58:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6675 states and 9565 transitions. [2022-11-19 06:58:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-19 06:58:11,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:11,026 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:11,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (17)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:11,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:58:11,240 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:58:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1272649753, now seen corresponding path program 1 times [2022-11-19 06:58:11,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:11,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111190788] [2022-11-19 06:58:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:11,242 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 [2022-11-19 06:58:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:11,243 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:58:11,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (18)] Waiting until timeout for monitored process [2022-11-19 06:58:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:13,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:58:13,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-19 06:58:13,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:13,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:13,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111190788] [2022-11-19 06:58:13,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111190788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:13,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:13,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:58:13,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020701576] [2022-11-19 06:58:13,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:13,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:13,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:13,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:13,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:13,280 INFO L87 Difference]: Start difference. First operand 6675 states and 9565 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:58:15,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:58:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:16,347 INFO L93 Difference]: Finished difference Result 14108 states and 20293 transitions. [2022-11-19 06:58:16,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:58:16,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2022-11-19 06:58:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:16,380 INFO L225 Difference]: With dead ends: 14108 [2022-11-19 06:58:16,380 INFO L226 Difference]: Without dead ends: 7454 [2022-11-19 06:58:16,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:16,424 INFO L413 NwaCegarLoop]: 3076 mSDtfsCounter, 285 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 5814 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:16,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 5814 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-19 06:58:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2022-11-19 06:58:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 7438. [2022-11-19 06:58:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7438 states, 4872 states have (on average 1.2249589490968802) internal successors, (5968), 5080 states have internal predecessors, (5968), 2158 states have call successors, (2158), 413 states have call predecessors, (2158), 405 states have return successors, (2571), 2058 states have call predecessors, (2571), 2155 states have call successors, (2571) [2022-11-19 06:58:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7438 states to 7438 states and 10697 transitions. [2022-11-19 06:58:17,825 INFO L78 Accepts]: Start accepts. Automaton has 7438 states and 10697 transitions. Word has length 158 [2022-11-19 06:58:17,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:17,826 INFO L495 AbstractCegarLoop]: Abstraction has 7438 states and 10697 transitions. [2022-11-19 06:58:17,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:58:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7438 states and 10697 transitions. [2022-11-19 06:58:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-19 06:58:17,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:17,829 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:17,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (18)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:18,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:58:18,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:58:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1714890858, now seen corresponding path program 1 times [2022-11-19 06:58:18,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:18,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916802327] [2022-11-19 06:58:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:18,041 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 [2022-11-19 06:58:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:18,042 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:58:18,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (19)] Waiting until timeout for monitored process [2022-11-19 06:58:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:19,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 06:58:19,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-19 06:58:20,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:20,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:20,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916802327] [2022-11-19 06:58:20,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916802327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:20,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:20,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-19 06:58:20,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084440808] [2022-11-19 06:58:20,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:20,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 06:58:20,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 06:58:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:58:20,765 INFO L87 Difference]: Start difference. First operand 7438 states and 10697 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-19 06:58:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:25,915 INFO L93 Difference]: Finished difference Result 15433 states and 22247 transitions. [2022-11-19 06:58:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 06:58:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 162 [2022-11-19 06:58:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:25,950 INFO L225 Difference]: With dead ends: 15433 [2022-11-19 06:58:25,950 INFO L226 Difference]: Without dead ends: 8012 [2022-11-19 06:58:25,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-11-19 06:58:25,986 INFO L413 NwaCegarLoop]: 2921 mSDtfsCounter, 410 mSDsluCounter, 37384 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 40305 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:25,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 40305 Invalid, 892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 06:58:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2022-11-19 06:58:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 7446. [2022-11-19 06:58:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7446 states, 4876 states have (on average 1.224774405250205) internal successors, (5972), 5088 states have internal predecessors, (5972), 2158 states have call successors, (2158), 413 states have call predecessors, (2158), 409 states have return successors, (2587), 2058 states have call predecessors, (2587), 2155 states have call successors, (2587) [2022-11-19 06:58:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7446 states to 7446 states and 10717 transitions. [2022-11-19 06:58:27,571 INFO L78 Accepts]: Start accepts. Automaton has 7446 states and 10717 transitions. Word has length 162 [2022-11-19 06:58:27,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:27,572 INFO L495 AbstractCegarLoop]: Abstraction has 7446 states and 10717 transitions. [2022-11-19 06:58:27,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-19 06:58:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 7446 states and 10717 transitions. [2022-11-19 06:58:27,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-19 06:58:27,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:27,574 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:27,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (19)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:27,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:58:27,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:58:27,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash 260895441, now seen corresponding path program 1 times [2022-11-19 06:58:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:27,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073899240] [2022-11-19 06:58:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:27,777 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 [2022-11-19 06:58:27,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:27,778 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:58:27,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (20)] Waiting until timeout for monitored process [2022-11-19 06:58:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:30,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 06:58:30,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-19 06:58:32,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-19 06:58:35,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073899240] [2022-11-19 06:58:35,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073899240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [904148657] [2022-11-19 06:58:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:35,112 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:58:35,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:58:35,114 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:58:35,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-19 06:58:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:37,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:58:37,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-19 06:58:37,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:37,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [904148657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:37,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:58:37,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 13] total 28 [2022-11-19 06:58:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732768345] [2022-11-19 06:58:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:58:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:37,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:58:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-11-19 06:58:37,734 INFO L87 Difference]: Start difference. First operand 7446 states and 10717 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:58:40,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:58:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:41,592 INFO L93 Difference]: Finished difference Result 14931 states and 21521 transitions. [2022-11-19 06:58:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:58:41,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 179 [2022-11-19 06:58:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:41,628 INFO L225 Difference]: With dead ends: 14931 [2022-11-19 06:58:41,628 INFO L226 Difference]: Without dead ends: 7506 [2022-11-19 06:58:41,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:58:41,670 INFO L413 NwaCegarLoop]: 2727 mSDtfsCounter, 24 mSDsluCounter, 8148 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10875 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:41,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10875 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 06:58:41,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2022-11-19 06:58:42,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 7498. [2022-11-19 06:58:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7498 states, 4920 states have (on average 1.224390243902439) internal successors, (6024), 5136 states have internal predecessors, (6024), 2166 states have call successors, (2166), 413 states have call predecessors, (2166), 409 states have return successors, (2595), 2066 states have call predecessors, (2595), 2163 states have call successors, (2595) [2022-11-19 06:58:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 10785 transitions. [2022-11-19 06:58:42,954 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 10785 transitions. Word has length 179 [2022-11-19 06:58:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:42,954 INFO L495 AbstractCegarLoop]: Abstraction has 7498 states and 10785 transitions. [2022-11-19 06:58:42,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:58:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 10785 transitions. [2022-11-19 06:58:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-19 06:58:42,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:42,957 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:42,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:43,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (20)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:43,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:58:43,373 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:58:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1123562676, now seen corresponding path program 1 times [2022-11-19 06:58:43,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:43,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560736545] [2022-11-19 06:58:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:43,375 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 [2022-11-19 06:58:43,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:43,376 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:58:43,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (22)] Waiting until timeout for monitored process [2022-11-19 06:58:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:46,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 06:58:46,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-19 06:58:48,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-19 06:58:51,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:51,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560736545] [2022-11-19 06:58:51,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560736545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:51,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [419245872] [2022-11-19 06:58:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:51,686 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:58:51,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:58:51,687 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:58:51,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-19 06:58:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:56,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 06:58:56,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-19 06:58:58,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-11-19 06:58:58,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [419245872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:58,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533445017] [2022-11-19 06:58:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:58,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:58:58,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:58,863 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:58:58,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 06:59:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:01,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:59:01,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-19 06:59:01,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:59:01,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533445017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:01,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-19 06:59:01,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15, 13, 9, 9] total 33 [2022-11-19 06:59:01,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342211820] [2022-11-19 06:59:01,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:59:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:59:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2022-11-19 06:59:01,943 INFO L87 Difference]: Start difference. First operand 7498 states and 10785 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 06:59:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:03,638 INFO L93 Difference]: Finished difference Result 15031 states and 21657 transitions. [2022-11-19 06:59:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:59:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 200 [2022-11-19 06:59:03,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:03,670 INFO L225 Difference]: With dead ends: 15031 [2022-11-19 06:59:03,670 INFO L226 Difference]: Without dead ends: 7554 [2022-11-19 06:59:03,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 964 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 06:59:03,706 INFO L413 NwaCegarLoop]: 2736 mSDtfsCounter, 228 mSDsluCounter, 5157 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 7893 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:03,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 7893 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:59:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7554 states. [2022-11-19 06:59:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7554 to 7518. [2022-11-19 06:59:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7518 states, 4932 states have (on average 1.2238442822384428) internal successors, (6036), 5148 states have internal predecessors, (6036), 2174 states have call successors, (2174), 413 states have call predecessors, (2174), 409 states have return successors, (2603), 2074 states have call predecessors, (2603), 2171 states have call successors, (2603) [2022-11-19 06:59:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 10813 transitions. [2022-11-19 06:59:04,920 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 10813 transitions. Word has length 200 [2022-11-19 06:59:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:04,920 INFO L495 AbstractCegarLoop]: Abstraction has 7518 states and 10813 transitions. [2022-11-19 06:59:04,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 06:59:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 10813 transitions. [2022-11-19 06:59:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-19 06:59:04,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:04,923 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:04,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:05,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:05,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (22)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:05,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:59:05,535 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:59:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:05,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1438090585, now seen corresponding path program 1 times [2022-11-19 06:59:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:05,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563482828] [2022-11-19 06:59:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:05,539 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 [2022-11-19 06:59:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:05,541 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:59:05,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (25)] Waiting until timeout for monitored process [2022-11-19 06:59:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:08,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 06:59:08,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-19 06:59:10,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-19 06:59:13,312 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:13,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563482828] [2022-11-19 06:59:13,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563482828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:13,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1663811357] [2022-11-19 06:59:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:13,312 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:13,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:59:13,314 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:59:13,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-19 06:59:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:18,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 06:59:18,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-19 06:59:19,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-19 06:59:20,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1663811357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:20,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424159875] [2022-11-19 06:59:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:20,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:59:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:59:20,057 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:59:20,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-19 06:59:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:22,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:59:22,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-19 06:59:23,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-19 06:59:24,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424159875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:24,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:59:24,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 9, 9, 5, 5] total 37 [2022-11-19 06:59:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174733006] [2022-11-19 06:59:24,127 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:59:24,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-19 06:59:24,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:24,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-19 06:59:24,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1219, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:59:24,130 INFO L87 Difference]: Start difference. First operand 7518 states and 10813 transitions. Second operand has 37 states, 32 states have (on average 6.53125) internal successors, (209), 28 states have internal predecessors, (209), 17 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (60), 18 states have call predecessors, (60), 14 states have call successors, (60) [2022-11-19 06:59:30,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:36,654 INFO L93 Difference]: Finished difference Result 14367 states and 20654 transitions. [2022-11-19 06:59:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 06:59:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 6.53125) internal successors, (209), 28 states have internal predecessors, (209), 17 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (60), 18 states have call predecessors, (60), 14 states have call successors, (60) Word has length 201 [2022-11-19 06:59:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:36,679 INFO L225 Difference]: With dead ends: 14367 [2022-11-19 06:59:36,679 INFO L226 Difference]: Without dead ends: 6870 [2022-11-19 06:59:36,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1167 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-11-19 06:59:36,716 INFO L413 NwaCegarLoop]: 2797 mSDtfsCounter, 801 mSDsluCounter, 48807 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 227 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 51604 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:36,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 51604 Invalid, 1514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [227 Valid, 1286 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-19 06:59:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6870 states. [2022-11-19 06:59:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6870 to 6727. [2022-11-19 06:59:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6727 states, 4336 states have (on average 1.2117158671586716) internal successors, (5254), 4527 states have internal predecessors, (5254), 1980 states have call successors, (1980), 412 states have call predecessors, (1980), 408 states have return successors, (2387), 1887 states have call predecessors, (2387), 1977 states have call successors, (2387) [2022-11-19 06:59:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 9621 transitions. [2022-11-19 06:59:37,740 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 9621 transitions. Word has length 201 [2022-11-19 06:59:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:37,741 INFO L495 AbstractCegarLoop]: Abstraction has 6727 states and 9621 transitions. [2022-11-19 06:59:37,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 6.53125) internal successors, (209), 28 states have internal predecessors, (209), 17 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (60), 18 states have call predecessors, (60), 14 states have call successors, (60) [2022-11-19 06:59:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 9621 transitions. [2022-11-19 06:59:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-19 06:59:37,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:37,743 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:37,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:37,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:38,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (25)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:38,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:59:38,344 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:59:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash 938840079, now seen corresponding path program 1 times [2022-11-19 06:59:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:38,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382500238] [2022-11-19 06:59:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:38,346 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 [2022-11-19 06:59:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:38,347 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:59:38,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (28)] Waiting until timeout for monitored process [2022-11-19 06:59:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:41,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:59:41,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-19 06:59:41,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:59:41,864 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:41,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382500238] [2022-11-19 06:59:41,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382500238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:41,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:41,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:59:41,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657269665] [2022-11-19 06:59:41,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:41,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:41,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:41,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:41,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:41,866 INFO L87 Difference]: Start difference. First operand 6727 states and 9621 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 06:59:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:43,101 INFO L93 Difference]: Finished difference Result 14254 states and 20481 transitions. [2022-11-19 06:59:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 236 [2022-11-19 06:59:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:43,127 INFO L225 Difference]: With dead ends: 14254 [2022-11-19 06:59:43,127 INFO L226 Difference]: Without dead ends: 7548 [2022-11-19 06:59:43,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:43,157 INFO L413 NwaCegarLoop]: 2950 mSDtfsCounter, 265 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 5694 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:43,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 5694 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:59:43,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7548 states. [2022-11-19 06:59:44,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7548 to 6731. [2022-11-19 06:59:44,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6731 states, 4340 states have (on average 1.211520737327189) internal successors, (5258), 4531 states have internal predecessors, (5258), 1980 states have call successors, (1980), 412 states have call predecessors, (1980), 408 states have return successors, (2387), 1887 states have call predecessors, (2387), 1977 states have call successors, (2387) [2022-11-19 06:59:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 9625 transitions. [2022-11-19 06:59:44,289 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 9625 transitions. Word has length 236 [2022-11-19 06:59:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:44,290 INFO L495 AbstractCegarLoop]: Abstraction has 6731 states and 9625 transitions. [2022-11-19 06:59:44,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 06:59:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 9625 transitions. [2022-11-19 06:59:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-19 06:59:44,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:44,293 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:44,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (28)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:44,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:59:44,494 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:59:44,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:44,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1639650348, now seen corresponding path program 1 times [2022-11-19 06:59:44,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:44,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994826460] [2022-11-19 06:59:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:44,496 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 [2022-11-19 06:59:44,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:44,497 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:59:44,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (29)] Waiting until timeout for monitored process [2022-11-19 06:59:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:48,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:59:48,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-19 06:59:48,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-19 06:59:48,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:48,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994826460] [2022-11-19 06:59:48,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994826460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:48,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1345565998] [2022-11-19 06:59:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:48,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:48,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:59:48,365 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:59:48,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-19 06:59:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:51,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:59:51,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-19 06:59:51,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:59:51,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1345565998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:51,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:59:51,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-19 06:59:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486579941] [2022-11-19 06:59:51,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:51,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:51,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:59:51,109 INFO L87 Difference]: Start difference. First operand 6731 states and 9625 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 06:59:53,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:54,150 INFO L93 Difference]: Finished difference Result 13473 states and 19297 transitions. [2022-11-19 06:59:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:54,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 239 [2022-11-19 06:59:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:54,174 INFO L225 Difference]: With dead ends: 13473 [2022-11-19 06:59:54,174 INFO L226 Difference]: Without dead ends: 6763 [2022-11-19 06:59:54,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:59:54,202 INFO L413 NwaCegarLoop]: 2722 mSDtfsCounter, 8 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5424 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:54,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5424 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 06:59:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-19 06:59:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6735. [2022-11-19 06:59:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 4344 states have (on average 1.2113259668508287) internal successors, (5262), 4535 states have internal predecessors, (5262), 1980 states have call successors, (1980), 412 states have call predecessors, (1980), 408 states have return successors, (2387), 1887 states have call predecessors, (2387), 1977 states have call successors, (2387) [2022-11-19 06:59:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 9629 transitions. [2022-11-19 06:59:55,204 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 9629 transitions. Word has length 239 [2022-11-19 06:59:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:55,204 INFO L495 AbstractCegarLoop]: Abstraction has 6735 states and 9629 transitions. [2022-11-19 06:59:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 06:59:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 9629 transitions. [2022-11-19 06:59:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-19 06:59:55,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:55,207 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:55,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (29)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:55,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:55,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:55,620 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:59:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:55,621 INFO L85 PathProgramCache]: Analyzing trace with hash 442324685, now seen corresponding path program 1 times [2022-11-19 06:59:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:55,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522918725] [2022-11-19 06:59:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:55,623 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 [2022-11-19 06:59:55,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:55,624 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:59:55,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (31)] Waiting until timeout for monitored process [2022-11-19 06:59:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:59,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:59:59,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-19 06:59:59,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-19 07:00:00,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:00,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522918725] [2022-11-19 07:00:00,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522918725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:00:00,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656688099] [2022-11-19 07:00:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:00,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:00:00,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:00:00,827 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:00:00,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-19 07:00:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:07,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:00:07,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-19 07:00:07,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-19 07:00:07,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656688099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:00:07,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791999708] [2022-11-19 07:00:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:07,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:07,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:07,562 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:07,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-19 07:00:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:10,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:00:10,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-19 07:00:12,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:12,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791999708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:12,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-19 07:00:12,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8, 8, 8] total 17 [2022-11-19 07:00:12,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73046583] [2022-11-19 07:00:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:12,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:12,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:00:12,293 INFO L87 Difference]: Start difference. First operand 6735 states and 9629 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-19 07:00:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:13,404 INFO L93 Difference]: Finished difference Result 6743 states and 9635 transitions. [2022-11-19 07:00:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:13,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 239 [2022-11-19 07:00:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:13,421 INFO L225 Difference]: With dead ends: 6743 [2022-11-19 07:00:13,421 INFO L226 Difference]: Without dead ends: 6741 [2022-11-19 07:00:13,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1175 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:00:13,424 INFO L413 NwaCegarLoop]: 3822 mSDtfsCounter, 2155 mSDsluCounter, 10370 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 14192 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:13,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 14192 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2022-11-19 07:00:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 6735. [2022-11-19 07:00:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 4344 states have (on average 1.210865561694291) internal successors, (5260), 4535 states have internal predecessors, (5260), 1980 states have call successors, (1980), 412 states have call predecessors, (1980), 408 states have return successors, (2387), 1887 states have call predecessors, (2387), 1977 states have call successors, (2387) [2022-11-19 07:00:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 9627 transitions. [2022-11-19 07:00:14,378 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 9627 transitions. Word has length 239 [2022-11-19 07:00:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:14,379 INFO L495 AbstractCegarLoop]: Abstraction has 6735 states and 9627 transitions. [2022-11-19 07:00:14,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-19 07:00:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 9627 transitions. [2022-11-19 07:00:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-19 07:00:14,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:14,384 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:14,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:14,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (31)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:14,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:15,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:00:15,001 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1746513996, now seen corresponding path program 1 times [2022-11-19 07:00:15,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:15,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162940619] [2022-11-19 07:00:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:15,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:15,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:15,004 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:00:15,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (34)] Waiting until timeout for monitored process [2022-11-19 07:00:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:18,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 3213 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:00:18,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-19 07:00:18,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:18,857 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:18,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162940619] [2022-11-19 07:00:18,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162940619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:18,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:18,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:00:18,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908365133] [2022-11-19 07:00:18,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:18,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:18,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:18,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:18,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:18,860 INFO L87 Difference]: Start difference. First operand 6735 states and 9627 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-19 07:00:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:20,091 INFO L93 Difference]: Finished difference Result 13503 states and 19331 transitions. [2022-11-19 07:00:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 335 [2022-11-19 07:00:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:20,113 INFO L225 Difference]: With dead ends: 13503 [2022-11-19 07:00:20,113 INFO L226 Difference]: Without dead ends: 6789 [2022-11-19 07:00:20,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:20,138 INFO L413 NwaCegarLoop]: 2730 mSDtfsCounter, 15 mSDsluCounter, 5419 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 8149 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:20,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 8149 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:20,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2022-11-19 07:00:21,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 6761. [2022-11-19 07:00:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 4360 states have (on average 1.2100917431192661) internal successors, (5276), 4553 states have internal predecessors, (5276), 1988 states have call successors, (1988), 412 states have call predecessors, (1988), 410 states have return successors, (2399), 1895 states have call predecessors, (2399), 1985 states have call successors, (2399) [2022-11-19 07:00:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 9663 transitions. [2022-11-19 07:00:21,124 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 9663 transitions. Word has length 335 [2022-11-19 07:00:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:21,124 INFO L495 AbstractCegarLoop]: Abstraction has 6761 states and 9663 transitions. [2022-11-19 07:00:21,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-19 07:00:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 9663 transitions. [2022-11-19 07:00:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-19 07:00:21,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:21,129 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:21,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (34)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:21,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:00:21,352 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:21,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1526939749, now seen corresponding path program 1 times [2022-11-19 07:00:21,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:21,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529008287] [2022-11-19 07:00:21,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:21,356 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 [2022-11-19 07:00:21,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:21,357 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:00:21,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (35)] Waiting until timeout for monitored process [2022-11-19 07:00:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:25,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 3195 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:00:25,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 218 proven. 10 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-19 07:00:25,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-19 07:00:27,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:27,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529008287] [2022-11-19 07:00:27,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529008287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:00:27,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [653693383] [2022-11-19 07:00:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:27,164 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:00:27,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:00:27,165 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:00:27,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-19 07:00:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:30,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 3195 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:00:30,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-11-19 07:00:30,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:30,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [653693383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:30,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:00:30,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8] total 15 [2022-11-19 07:00:30,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549690633] [2022-11-19 07:00:30,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:30,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:30,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:30,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:30,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:00:30,400 INFO L87 Difference]: Start difference. First operand 6761 states and 9663 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-19 07:00:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:31,662 INFO L93 Difference]: Finished difference Result 14136 states and 20295 transitions. [2022-11-19 07:00:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 337 [2022-11-19 07:00:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:31,685 INFO L225 Difference]: With dead ends: 14136 [2022-11-19 07:00:31,685 INFO L226 Difference]: Without dead ends: 7396 [2022-11-19 07:00:31,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 995 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:00:31,712 INFO L413 NwaCegarLoop]: 2803 mSDtfsCounter, 199 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:31,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 5515 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2022-11-19 07:00:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 6763. [2022-11-19 07:00:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 4362 states have (on average 1.2099954149472718) internal successors, (5278), 4555 states have internal predecessors, (5278), 1988 states have call successors, (1988), 412 states have call predecessors, (1988), 410 states have return successors, (2399), 1895 states have call predecessors, (2399), 1985 states have call successors, (2399) [2022-11-19 07:00:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9665 transitions. [2022-11-19 07:00:32,725 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9665 transitions. Word has length 337 [2022-11-19 07:00:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:32,726 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9665 transitions. [2022-11-19 07:00:32,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-19 07:00:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9665 transitions. [2022-11-19 07:00:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-19 07:00:32,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:32,731 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:32,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (35)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:32,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:33,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:00:33,152 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 488355175, now seen corresponding path program 1 times [2022-11-19 07:00:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:33,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495254939] [2022-11-19 07:00:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:33,155 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 [2022-11-19 07:00:33,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:33,156 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:00:33,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (37)] Waiting until timeout for monitored process [2022-11-19 07:00:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:37,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 3195 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:00:37,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 218 proven. 10 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-19 07:00:37,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-19 07:00:38,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:38,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495254939] [2022-11-19 07:00:38,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495254939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:00:38,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1888079612] [2022-11-19 07:00:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:38,897 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:00:38,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:00:38,898 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:00:38,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-19 07:00:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:46,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 3195 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:00:46,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 218 proven. 10 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-19 07:00:46,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-19 07:00:46,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1888079612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:00:46,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14361463] [2022-11-19 07:00:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:46,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:46,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:46,537 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:46,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-19 07:00:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:49,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 3195 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:00:49,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-11-19 07:00:50,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:50,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14361463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:50,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-19 07:00:50,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 8, 8] total 20 [2022-11-19 07:00:50,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874115588] [2022-11-19 07:00:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:50,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:00:50,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:50,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:00:50,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:00:50,347 INFO L87 Difference]: Start difference. First operand 6763 states and 9665 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-19 07:00:52,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:52,725 INFO L93 Difference]: Finished difference Result 13577 states and 19425 transitions. [2022-11-19 07:00:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:00:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 337 [2022-11-19 07:00:52,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:52,745 INFO L225 Difference]: With dead ends: 13577 [2022-11-19 07:00:52,745 INFO L226 Difference]: Without dead ends: 6835 [2022-11-19 07:00:52,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1684 GetRequests, 1662 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:00:52,768 INFO L413 NwaCegarLoop]: 2696 mSDtfsCounter, 47 mSDsluCounter, 16051 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 18747 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:52,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 18747 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:00:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2022-11-19 07:00:53,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6779. [2022-11-19 07:00:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 4378 states have (on average 1.2092279579716765) internal successors, (5294), 4567 states have internal predecessors, (5294), 1988 states have call successors, (1988), 412 states have call predecessors, (1988), 410 states have return successors, (2399), 1895 states have call predecessors, (2399), 1985 states have call successors, (2399) [2022-11-19 07:00:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 9681 transitions. [2022-11-19 07:00:53,772 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 9681 transitions. Word has length 337 [2022-11-19 07:00:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:53,772 INFO L495 AbstractCegarLoop]: Abstraction has 6779 states and 9681 transitions. [2022-11-19 07:00:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-19 07:00:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 9681 transitions. [2022-11-19 07:00:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-11-19 07:00:53,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:53,775 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:53,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:54,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (37)] Ended with exit code 0 [2022-11-19 07:00:54,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2022-11-19 07:00:54,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:00:54,376 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:54,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1816677737, now seen corresponding path program 1 times [2022-11-19 07:00:54,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:54,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959415943] [2022-11-19 07:00:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:54,380 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 [2022-11-19 07:00:54,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:54,381 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:00:54,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae787bf-bb97-431e-a454-a86b673eee7f/bin/utaipan-I9t0OCRTmS/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 (40)] Waiting until timeout for monitored process