./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7 --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 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:32:57,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:32:57,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:32:57,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:32:57,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:32:57,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:32:57,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:32:57,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:32:57,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:32:57,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:32:57,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:32:57,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:32:57,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:32:57,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:32:57,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:32:57,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:32:57,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:32:57,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:32:57,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:32:57,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:32:57,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:32:57,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:32:57,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:32:57,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:32:57,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:32:57,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:32:57,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:32:57,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:32:57,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:32:57,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:32:57,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:32:57,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:32:57,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:32:57,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:32:57,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:32:57,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:32:57,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:32:57,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:32:57,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:32:57,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:32:57,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:32:57,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:32:57,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:32:57,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:32:57,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:32:57,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:32:57,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:32:57,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:32:57,778 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:32:57,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:32:57,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:32:57,786 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:32:57,787 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:32:57,787 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:32:57,787 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:32:57,787 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:32:57,788 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:32:57,788 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:32:57,788 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:32:57,788 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:32:57,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:32:57,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:32:57,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:32:57,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:32:57,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:32:57,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:32:57,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:32:57,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:32:57,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:32:57,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:32:57,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:32:57,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:32:57,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:32:57,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:32:57,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:32:57,795 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:32:57,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:32:57,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:32:57,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:32:57,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:32:57,796 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 [2021-11-25 20:32:58,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:32:58,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:32:58,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:32:58,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:32:58,087 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:32:58,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-25 20:32:58,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/data/42f6732e0/6f2074d3d7e9474892f22bb6d0ce3afe/FLAG372939202 [2021-11-25 20:32:59,160 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:32:59,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-25 20:32:59,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/data/42f6732e0/6f2074d3d7e9474892f22bb6d0ce3afe/FLAG372939202 [2021-11-25 20:32:59,478 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/data/42f6732e0/6f2074d3d7e9474892f22bb6d0ce3afe [2021-11-25 20:32:59,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:32:59,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:32:59,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:32:59,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:32:59,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:32:59,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:32:59" (1/1) ... [2021-11-25 20:32:59,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6c72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:59, skipping insertion in model container [2021-11-25 20:32:59,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:32:59" (1/1) ... [2021-11-25 20:32:59,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:32:59,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:33:06,566 WARN L230 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2021-11-25 20:33:06,569 WARN L230 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2021-11-25 20:33:06,569 WARN L230 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2021-11-25 20:33:06,570 WARN L230 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2021-11-25 20:33:06,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:33:06,679 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:33:07,454 WARN L230 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2021-11-25 20:33:07,455 WARN L230 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2021-11-25 20:33:07,456 WARN L230 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2021-11-25 20:33:07,456 WARN L230 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_a7fb3db9-f3a8-4161-b115-18a3e1c79932/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2021-11-25 20:33:07,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:33:07,917 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:33:07,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07 WrapperNode [2021-11-25 20:33:07,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:33:07,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:33:07,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:33:07,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:33:07,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:08,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:08,532 INFO L137 Inliner]: procedures = 780, calls = 5890, calls flagged for inlining = 431, calls inlined = 378, statements flattened = 14351 [2021-11-25 20:33:08,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:33:08,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:33:08,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:33:08,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:33:08,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:08,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:08,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:08,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:08,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:09,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:09,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:09,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:33:09,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:33:09,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:33:09,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:33:09,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (1/1) ... [2021-11-25 20:33:09,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:33:09,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:33:09,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:33:09,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fb3db9-f3a8-4161-b115-18a3e1c79932/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:33:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_sge_intr_msix [2021-11-25 20:33:09,236 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_sge_intr_msix [2021-11-25 20:33:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-25 20:33:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-25 20:33:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure seq_putc [2021-11-25 20:33:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_putc [2021-11-25 20:33:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:33:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:33:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:33:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:33:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 20:33:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 20:33:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_debugfs [2021-11-25 20:33:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_debugfs [2021-11-25 20:33:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 20:33:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 20:33:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_sw_desc [2021-11-25 20:33:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_sw_desc [2021-11-25 20:33:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure is_t4 [2021-11-25 20:33:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_t4 [2021-11-25 20:33:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:33:09,240 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:33:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:33:09,240 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:33:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 20:33:09,240 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 20:33:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-25 20:33:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-25 20:33:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:33:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:33:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure is_new_response [2021-11-25 20:33:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure is_new_response [2021-11-25 20:33:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2021-11-25 20:33:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2021-11-25 20:33:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:33:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:33:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure qenable [2021-11-25 20:33:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure qenable [2021-11-25 20:33:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-11-25 20:33:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-11-25 20:33:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure is_10g_port [2021-11-25 20:33:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10g_port [2021-11-25 20:33:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:33:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:33:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure seq_open [2021-11-25 20:33:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_open [2021-11-25 20:33:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2021-11-25 20:33:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2021-11-25 20:33:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:33:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_get_port_stats [2021-11-25 20:33:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_get_port_stats [2021-11-25 20:33:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 20:33:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 20:33:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure free_tx_desc [2021-11-25 20:33:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tx_desc [2021-11-25 20:33:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_wr_mbox_core [2021-11-25 20:33:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_wr_mbox_core [2021-11-25 20:33:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-25 20:33:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-25 20:33:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure netdev2adap [2021-11-25 20:33:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev2adap [2021-11-25 20:33:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:33:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:33:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 20:33:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 20:33:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:33:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:33:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure core_ticks_to_us [2021-11-25 20:33:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure core_ticks_to_us [2021-11-25 20:33:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:33:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:33:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:33:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:33:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:33:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:33:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:33:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-25 20:33:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-25 20:33:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 20:33:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 20:33:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 20:33:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 20:33:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:33:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:33:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:33:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:33:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 20:33:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-25 20:33:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-25 20:33:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_change_mac [2021-11-25 20:33:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_change_mac [2021-11-25 20:33:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure fl_starving [2021-11-25 20:33:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure fl_starving [2021-11-25 20:33:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure adapter_down [2021-11-25 20:33:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure adapter_down [2021-11-25 20:33:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:33:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:33:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure netdev2pinfo [2021-11-25 20:33:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev2pinfo [2021-11-25 20:33:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_free_vi [2021-11-25 20:33:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_free_vi [2021-11-25 20:33:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_free_sge_resources [2021-11-25 20:33:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_free_sge_resources [2021-11-25 20:33:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-25 20:33:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-25 20:33:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:33:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:33:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure t4_read_reg [2021-11-25 20:33:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_read_reg [2021-11-25 20:33:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:33:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:33:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 20:33:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 20:33:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2021-11-25 20:33:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2021-11-25 20:33:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:33:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:33:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 20:33:09,256 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 20:33:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure is_eth_imm [2021-11-25 20:33:09,256 INFO L138 BoogieDeclarations]: Found implementation of procedure is_eth_imm [2021-11-25 20:33:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:33:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:33:09,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:33:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-25 20:33:09,257 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-25 20:33:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 20:33:09,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 20:33:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure is_buf_mapped [2021-11-25 20:33:09,257 INFO L138 BoogieDeclarations]: Found implementation of procedure is_buf_mapped [2021-11-25 20:33:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 20:33:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:33:09,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:33:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:33:09,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:33:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 20:33:09,258 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 20:33:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure reg_block_dump [2021-11-25 20:33:09,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_block_dump [2021-11-25 20:33:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-25 20:33:09,259 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-25 20:33:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:33:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:33:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 20:33:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 20:33:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_pci_shutdown [2021-11-25 20:33:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_pci_shutdown [2021-11-25 20:33:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 20:33:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 20:33:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:33:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:33:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 20:33:09,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 20:33:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 20:33:09,261 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 20:33:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 20:33:09,261 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 20:33:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_set_rxmode [2021-11-25 20:33:09,262 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_set_rxmode [2021-11-25 20:33:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 20:33:09,262 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 20:33:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-25 20:33:09,262 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-25 20:33:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_addr [2021-11-25 20:33:09,263 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_addr [2021-11-25 20:33:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_wr_mbox [2021-11-25 20:33:09,263 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_wr_mbox [2021-11-25 20:33:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:33:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:33:09,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:33:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure interfaces_get_idx [2021-11-25 20:33:09,264 INFO L138 BoogieDeclarations]: Found implementation of procedure interfaces_get_idx [2021-11-25 20:33:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:33:09,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:33:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_pci_remove [2021-11-25 20:33:09,264 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_pci_remove [2021-11-25 20:33:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-25 20:33:09,264 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-25 20:33:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_set_params [2021-11-25 20:33:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_set_params [2021-11-25 20:33:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:33:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:33:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:33:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:33:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 20:33:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 20:33:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_get_regs_len [2021-11-25 20:33:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_get_regs_len [2021-11-25 20:33:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_open [2021-11-25 20:33:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_open [2021-11-25 20:33:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-25 20:33:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-25 20:33:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure refill_fl [2021-11-25 20:33:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_fl [2021-11-25 20:33:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:33:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:33:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure free_rx_bufs [2021-11-25 20:33:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rx_bufs [2021-11-25 20:33:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:33:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:33:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 20:33:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 20:33:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 20:33:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 20:33:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_query_params [2021-11-25 20:33:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_query_params [2021-11-25 20:33:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:33:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:33:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure poison_buf [2021-11-25 20:33:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure poison_buf [2021-11-25 20:33:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:33:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:33:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 20:33:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 20:33:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:33:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:33:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:33:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:33:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:33:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-25 20:33:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-25 20:33:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 20:33:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 20:33:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:33:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:33:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure sge_qstats_entries [2021-11-25 20:33:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure sge_qstats_entries [2021-11-25 20:33:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure fl_cap [2021-11-25 20:33:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure fl_cap [2021-11-25 20:33:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:33:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 20:33:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 20:33:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 20:33:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 20:33:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:33:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ring [2021-11-25 20:33:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ring [2021-11-25 20:33:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:33:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:33:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:33:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:33:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_alloc_mac_filt [2021-11-25 20:33:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_alloc_mac_filt [2021-11-25 20:33:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:33:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:33:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:33:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:33:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-11-25 20:33:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-11-25 20:33:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_set_rxmode [2021-11-25 20:33:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_set_rxmode [2021-11-25 20:33:09,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cxgb4vf_module_exit_22_2 [2021-11-25 20:33:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cxgb4vf_module_exit_22_2 [2021-11-25 20:33:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure init_rspq [2021-11-25 20:33:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rspq [2021-11-25 20:33:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure adap2pinfo [2021-11-25 20:33:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure adap2pinfo [2021-11-25 20:33:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-11-25 20:33:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-11-25 20:33:09,358 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_stop [2021-11-25 20:33:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_stop [2021-11-25 20:33:09,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_seq_open [2021-11-25 20:33:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_seq_open [2021-11-25 20:33:09,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:33:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:33:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:33:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:33:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 20:33:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 20:33:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_enable_vi [2021-11-25 20:33:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_enable_vi [2021-11-25 20:33:09,360 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 20:33:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 20:33:09,360 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_poll_controller [2021-11-25 20:33:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_poll_controller [2021-11-25 20:33:09,360 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 20:33:09,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 20:33:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:33:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:33:09,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:33:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure reclaimable [2021-11-25 20:33:09,361 INFO L138 BoogieDeclarations]: Found implementation of procedure reclaimable [2021-11-25 20:33:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:33:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:33:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 20:33:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 20:33:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_intr_handler [2021-11-25 20:33:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_intr_handler [2021-11-25 20:33:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-25 20:33:09,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-25 20:33:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-25 20:33:09,363 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-25 20:33:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2021-11-25 20:33:09,363 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2021-11-25 20:33:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 20:33:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 20:33:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure qtimer_val [2021-11-25 20:33:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure qtimer_val [2021-11-25 20:33:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2021-11-25 20:33:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2021-11-25 20:33:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-25 20:33:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-25 20:33:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:33:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:33:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure rspq_next [2021-11-25 20:33:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rspq_next [2021-11-25 20:33:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure dump_mbox [2021-11-25 20:33:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_mbox [2021-11-25 20:33:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure t4_write_reg [2021-11-25 20:33:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_write_reg [2021-11-25 20:33:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure txq_stop [2021-11-25 20:33:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure txq_stop [2021-11-25 20:33:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-25 20:33:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-25 20:33:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:33:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:33:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:33:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 20:33:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 20:33:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 20:33:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 20:33:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:33:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:33:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:33:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:33:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure t4_read_reg64 [2021-11-25 20:33:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_read_reg64 [2021-11-25 20:33:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2021-11-25 20:33:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2021-11-25 20:33:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure free_rspq_fl [2021-11-25 20:33:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rspq_fl [2021-11-25 20:33:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:33:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:33:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:33:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:33:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 20:33:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 20:33:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:33:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:33:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure sge_queue_entries [2021-11-25 20:33:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure sge_queue_entries [2021-11-25 20:33:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release [2021-11-25 20:33:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release [2021-11-25 20:33:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_size [2021-11-25 20:33:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_size [2021-11-25 20:33:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 20:33:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 20:33:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2021-11-25 20:33:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2021-11-25 20:33:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 20:33:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 20:33:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-25 20:33:09,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-25 20:33:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:33:09,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:33:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 20:33:09,373 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 20:33:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_master [2021-11-25 20:33:09,374 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_master [2021-11-25 20:33:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:33:09,374 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:33:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_sge_alloc_rxq [2021-11-25 20:33:09,374 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_sge_alloc_rxq [2021-11-25 20:33:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:33:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:33:09,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:33:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 20:33:09,375 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 20:33:10,969 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:33:10,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:33:13,468 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:33:30,386 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:33:30,582 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:33:33,239 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:33:33,240 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-25 20:33:33,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:33:33 BoogieIcfgContainer [2021-11-25 20:33:33,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:33:33,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:33:33,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:33:33,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:33:33,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:32:59" (1/3) ... [2021-11-25 20:33:33,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f01d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:33:33, skipping insertion in model container [2021-11-25 20:33:33,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:33:07" (2/3) ... [2021-11-25 20:33:33,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f01d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:33:33, skipping insertion in model container [2021-11-25 20:33:33,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:33:33" (3/3) ... [2021-11-25 20:33:33,261 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-25 20:33:33,267 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:33:33,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 20:33:33,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:33:33,356 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:33:33,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 20:33:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 3096 states, 1871 states have (on average 1.3003741314804917) internal successors, (2433), 1909 states have internal predecessors, (2433), 1047 states have call successors, (1047), 175 states have call predecessors, (1047), 174 states have return successors, (1038), 1033 states have call predecessors, (1038), 1038 states have call successors, (1038) [2021-11-25 20:33:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2021-11-25 20:33:33,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:33,499 INFO L514 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:33,499 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:33:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:33,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1062756757, now seen corresponding path program 1 times [2021-11-25 20:33:33,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:33,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149736211] [2021-11-25 20:33:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:33,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2021-11-25 20:33:35,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:35,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149736211] [2021-11-25 20:33:35,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149736211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:35,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:35,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:33:35,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358313623] [2021-11-25 20:33:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:35,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:33:35,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:35,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:33:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:33:35,174 INFO L87 Difference]: Start difference. First operand has 3096 states, 1871 states have (on average 1.3003741314804917) internal successors, (2433), 1909 states have internal predecessors, (2433), 1047 states have call successors, (1047), 175 states have call predecessors, (1047), 174 states have return successors, (1038), 1033 states have call predecessors, (1038), 1038 states have call successors, (1038) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 20:33:38,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:33:47,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:33:47,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:47,333 INFO L93 Difference]: Finished difference Result 8939 states and 13075 transitions. [2021-11-25 20:33:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:33:47,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 602 [2021-11-25 20:33:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:47,422 INFO L225 Difference]: With dead ends: 8939 [2021-11-25 20:33:47,422 INFO L226 Difference]: Without dead ends: 5946 [2021-11-25 20:33:47,454 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:33:47,458 INFO L933 BasicCegarLoop]: 4831 mSDtfsCounter, 4210 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4212 SdHoareTripleChecker+Valid, 8671 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:47,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4212 Valid, 8671 Invalid, 1255 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1245 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2021-11-25 20:33:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5946 states. [2021-11-25 20:33:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5946 to 5940. [2021-11-25 20:33:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 3622 states have (on average 1.2998343456653783) internal successors, (4708), 3693 states have internal predecessors, (4708), 1970 states have call successors, (1970), 345 states have call predecessors, (1970), 344 states have return successors, (1968), 1956 states have call predecessors, (1968), 1966 states have call successors, (1968) [2021-11-25 20:33:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 8646 transitions. [2021-11-25 20:33:48,032 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 8646 transitions. Word has length 602 [2021-11-25 20:33:48,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:48,041 INFO L470 AbstractCegarLoop]: Abstraction has 5940 states and 8646 transitions. [2021-11-25 20:33:48,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 20:33:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 8646 transitions. [2021-11-25 20:33:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2021-11-25 20:33:48,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:48,070 INFO L514 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:48,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:33:48,074 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:33:48,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:48,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1492756145, now seen corresponding path program 1 times [2021-11-25 20:33:48,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:48,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882395054] [2021-11-25 20:33:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:48,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2021-11-25 20:33:48,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:48,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882395054] [2021-11-25 20:33:48,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882395054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:48,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:48,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:33:48,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527060266] [2021-11-25 20:33:48,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:48,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:33:48,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:48,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:33:48,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:33:48,878 INFO L87 Difference]: Start difference. First operand 5940 states and 8646 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2021-11-25 20:33:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:53,018 INFO L93 Difference]: Finished difference Result 11663 states and 16955 transitions. [2021-11-25 20:33:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:33:53,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 618 [2021-11-25 20:33:53,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:53,077 INFO L225 Difference]: With dead ends: 11663 [2021-11-25 20:33:53,078 INFO L226 Difference]: Without dead ends: 5840 [2021-11-25 20:33:53,110 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:33:53,112 INFO L933 BasicCegarLoop]: 3807 mSDtfsCounter, 4203 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 3996 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:53,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4203 Valid, 3996 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 20:33:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2021-11-25 20:33:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 5840. [2021-11-25 20:33:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 3559 states have (on average 1.298117448721551) internal successors, (4620), 3627 states have internal predecessors, (4620), 1932 states have call successors, (1932), 347 states have call predecessors, (1932), 346 states have return successors, (1930), 1918 states have call predecessors, (1930), 1928 states have call successors, (1930) [2021-11-25 20:33:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 8482 transitions. [2021-11-25 20:33:53,694 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 8482 transitions. Word has length 618 [2021-11-25 20:33:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:53,696 INFO L470 AbstractCegarLoop]: Abstraction has 5840 states and 8482 transitions. [2021-11-25 20:33:53,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2021-11-25 20:33:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 8482 transitions. [2021-11-25 20:33:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2021-11-25 20:33:53,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:53,722 INFO L514 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:33:53,727 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:33:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash 929503042, now seen corresponding path program 1 times [2021-11-25 20:33:53,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:53,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261642] [2021-11-25 20:33:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:53,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2021-11-25 20:33:54,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:54,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261642] [2021-11-25 20:33:54,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:54,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:54,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:33:54,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999793900] [2021-11-25 20:33:54,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:54,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:33:54,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:33:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:33:54,343 INFO L87 Difference]: Start difference. First operand 5840 states and 8482 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-25 20:34:00,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:03,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:03,070 INFO L93 Difference]: Finished difference Result 15887 states and 23050 transitions. [2021-11-25 20:34:03,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:34:03,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 625 [2021-11-25 20:34:03,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:03,159 INFO L225 Difference]: With dead ends: 15887 [2021-11-25 20:34:03,159 INFO L226 Difference]: Without dead ends: 10182 [2021-11-25 20:34:03,183 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:34:03,189 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 3184 mSDsluCounter, 4296 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 8284 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:03,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3184 Valid, 8284 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1253 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 20:34:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2021-11-25 20:34:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 10149. [2021-11-25 20:34:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10149 states, 6184 states have (on average 1.298027166882277) internal successors, (8027), 6312 states have internal predecessors, (8027), 3337 states have call successors, (3337), 626 states have call predecessors, (3337), 625 states have return successors, (3341), 3310 states have call predecessors, (3341), 3333 states have call successors, (3341) [2021-11-25 20:34:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10149 states to 10149 states and 14705 transitions. [2021-11-25 20:34:03,787 INFO L78 Accepts]: Start accepts. Automaton has 10149 states and 14705 transitions. Word has length 625 [2021-11-25 20:34:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:03,790 INFO L470 AbstractCegarLoop]: Abstraction has 10149 states and 14705 transitions. [2021-11-25 20:34:03,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-25 20:34:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 10149 states and 14705 transitions. [2021-11-25 20:34:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2021-11-25 20:34:03,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:03,802 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:03,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:34:03,803 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:34:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:03,804 INFO L85 PathProgramCache]: Analyzing trace with hash -256308535, now seen corresponding path program 1 times [2021-11-25 20:34:03,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:03,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428397941] [2021-11-25 20:34:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:03,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13597 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13597 trivial. 0 not checked. [2021-11-25 20:34:04,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:04,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428397941] [2021-11-25 20:34:04,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428397941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:04,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:04,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:34:04,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092014986] [2021-11-25 20:34:04,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:04,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:34:04,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:04,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:34:04,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:34:04,603 INFO L87 Difference]: Start difference. First operand 10149 states and 14705 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-25 20:34:12,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:14,946 INFO L93 Difference]: Finished difference Result 10261 states and 14853 transitions. [2021-11-25 20:34:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:34:14,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 636 [2021-11-25 20:34:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:15,022 INFO L225 Difference]: With dead ends: 10261 [2021-11-25 20:34:15,023 INFO L226 Difference]: Without dead ends: 10259 [2021-11-25 20:34:15,030 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:34:15,031 INFO L933 BasicCegarLoop]: 3819 mSDtfsCounter, 4221 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4238 SdHoareTripleChecker+Valid, 11580 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:15,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4238 Valid, 11580 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 20:34:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10259 states. [2021-11-25 20:34:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10259 to 10259. [2021-11-25 20:34:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10259 states, 6248 states have (on average 1.297855313700384) internal successors, (8109), 6382 states have internal predecessors, (8109), 3368 states have call successors, (3368), 640 states have call predecessors, (3368), 640 states have return successors, (3374), 3341 states have call predecessors, (3374), 3364 states have call successors, (3374) [2021-11-25 20:34:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10259 states to 10259 states and 14851 transitions. [2021-11-25 20:34:15,755 INFO L78 Accepts]: Start accepts. Automaton has 10259 states and 14851 transitions. Word has length 636 [2021-11-25 20:34:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:15,757 INFO L470 AbstractCegarLoop]: Abstraction has 10259 states and 14851 transitions. [2021-11-25 20:34:15,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-25 20:34:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 10259 states and 14851 transitions. [2021-11-25 20:34:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2021-11-25 20:34:15,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:15,771 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 4, 4, 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] [2021-11-25 20:34:15,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:34:15,771 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:34:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash -154572959, now seen corresponding path program 1 times [2021-11-25 20:34:15,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:15,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452643772] [2021-11-25 20:34:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:15,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13603 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13601 trivial. 0 not checked. [2021-11-25 20:34:16,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:16,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452643772] [2021-11-25 20:34:16,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452643772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:16,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:16,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:34:16,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618717748] [2021-11-25 20:34:16,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:16,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:34:16,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:34:16,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:34:16,592 INFO L87 Difference]: Start difference. First operand 10259 states and 14851 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2021-11-25 20:34:24,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:26,823 INFO L93 Difference]: Finished difference Result 10265 states and 14856 transitions. [2021-11-25 20:34:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:34:26,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 648 [2021-11-25 20:34:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:26,884 INFO L225 Difference]: With dead ends: 10265 [2021-11-25 20:34:26,884 INFO L226 Difference]: Without dead ends: 10263 [2021-11-25 20:34:26,891 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:34:26,892 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4231 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:26,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4231 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 20:34:26,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10263 states. [2021-11-25 20:34:27,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10263 to 10263. [2021-11-25 20:34:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10263 states, 6251 states have (on average 1.2977123660214365) internal successors, (8112), 6385 states have internal predecessors, (8112), 3368 states have call successors, (3368), 641 states have call predecessors, (3368), 641 states have return successors, (3374), 3341 states have call predecessors, (3374), 3364 states have call successors, (3374) [2021-11-25 20:34:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10263 states to 10263 states and 14854 transitions. [2021-11-25 20:34:27,565 INFO L78 Accepts]: Start accepts. Automaton has 10263 states and 14854 transitions. Word has length 648 [2021-11-25 20:34:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:27,566 INFO L470 AbstractCegarLoop]: Abstraction has 10263 states and 14854 transitions. [2021-11-25 20:34:27,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2021-11-25 20:34:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 10263 states and 14854 transitions. [2021-11-25 20:34:27,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2021-11-25 20:34:27,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:27,581 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 4, 4, 3, 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] [2021-11-25 20:34:27,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:34:27,581 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:34:27,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash 839024337, now seen corresponding path program 1 times [2021-11-25 20:34:27,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:27,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109159017] [2021-11-25 20:34:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:27,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13609 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13605 trivial. 0 not checked. [2021-11-25 20:34:28,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:28,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109159017] [2021-11-25 20:34:28,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109159017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:28,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:28,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:34:28,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134773439] [2021-11-25 20:34:28,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:28,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:34:28,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:28,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:34:28,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:34:28,200 INFO L87 Difference]: Start difference. First operand 10263 states and 14854 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-25 20:34:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:35,192 INFO L93 Difference]: Finished difference Result 10269 states and 14859 transitions. [2021-11-25 20:34:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:34:35,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 653 [2021-11-25 20:34:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:35,251 INFO L225 Difference]: With dead ends: 10269 [2021-11-25 20:34:35,251 INFO L226 Difference]: Without dead ends: 10267 [2021-11-25 20:34:35,258 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:34:35,259 INFO L933 BasicCegarLoop]: 3791 mSDtfsCounter, 4240 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:35,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4253 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 20:34:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10267 states. [2021-11-25 20:34:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10267 to 10267. [2021-11-25 20:34:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10267 states, 6254 states have (on average 1.29756955548449) internal successors, (8115), 6388 states have internal predecessors, (8115), 3368 states have call successors, (3368), 642 states have call predecessors, (3368), 642 states have return successors, (3374), 3341 states have call predecessors, (3374), 3364 states have call successors, (3374) [2021-11-25 20:34:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10267 states to 10267 states and 14857 transitions. [2021-11-25 20:34:35,990 INFO L78 Accepts]: Start accepts. Automaton has 10267 states and 14857 transitions. Word has length 653 [2021-11-25 20:34:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:35,991 INFO L470 AbstractCegarLoop]: Abstraction has 10267 states and 14857 transitions. [2021-11-25 20:34:35,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-25 20:34:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 10267 states and 14857 transitions. [2021-11-25 20:34:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2021-11-25 20:34:36,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:36,007 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:36,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:34:36,007 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:34:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1037056186, now seen corresponding path program 1 times [2021-11-25 20:34:36,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:36,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880521118] [2021-11-25 20:34:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:36,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13618 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2021-11-25 20:34:36,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:36,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880521118] [2021-11-25 20:34:36,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880521118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:36,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:36,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:34:36,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615048028] [2021-11-25 20:34:36,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:36,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:34:36,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:34:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:34:36,643 INFO L87 Difference]: Start difference. First operand 10267 states and 14857 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-25 20:34:39,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:46,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:48,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:51,273 INFO L93 Difference]: Finished difference Result 10273 states and 14862 transitions. [2021-11-25 20:34:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:34:51,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 657 [2021-11-25 20:34:51,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:51,321 INFO L225 Difference]: With dead ends: 10273 [2021-11-25 20:34:51,321 INFO L226 Difference]: Without dead ends: 10271 [2021-11-25 20:34:51,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:51,329 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4229 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:51,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4229 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1845 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2021-11-25 20:34:51,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10271 states. [2021-11-25 20:34:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10271 to 10271. [2021-11-25 20:34:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10271 states, 6257 states have (on average 1.2974268818922807) internal successors, (8118), 6391 states have internal predecessors, (8118), 3368 states have call successors, (3368), 643 states have call predecessors, (3368), 643 states have return successors, (3374), 3341 states have call predecessors, (3374), 3364 states have call successors, (3374) [2021-11-25 20:34:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 14860 transitions. [2021-11-25 20:34:52,164 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 14860 transitions. Word has length 657 [2021-11-25 20:34:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:52,165 INFO L470 AbstractCegarLoop]: Abstraction has 10271 states and 14860 transitions. [2021-11-25 20:34:52,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-25 20:34:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 14860 transitions. [2021-11-25 20:34:52,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2021-11-25 20:34:52,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:52,188 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 5, 4, 4, 4, 4, 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] [2021-11-25 20:34:52,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:34:52,189 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:34:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:52,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1682977640, now seen corresponding path program 1 times [2021-11-25 20:34:52,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:52,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994271581] [2021-11-25 20:34:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:52,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13632 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13624 trivial. 0 not checked. [2021-11-25 20:34:52,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:52,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994271581] [2021-11-25 20:34:52,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994271581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:52,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:52,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:34:52,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091905116] [2021-11-25 20:34:52,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:52,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:34:52,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:52,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:34:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:34:52,835 INFO L87 Difference]: Start difference. First operand 10271 states and 14860 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2021-11-25 20:35:00,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:03,332 INFO L93 Difference]: Finished difference Result 10351 states and 14930 transitions. [2021-11-25 20:35:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:35:03,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 662 [2021-11-25 20:35:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:03,380 INFO L225 Difference]: With dead ends: 10351 [2021-11-25 20:35:03,381 INFO L226 Difference]: Without dead ends: 10349 [2021-11-25 20:35:03,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:03,387 INFO L933 BasicCegarLoop]: 3831 mSDtfsCounter, 4164 mSDsluCounter, 9082 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 11677 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:03,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4177 Valid, 11677 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1860 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2021-11-25 20:35:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10349 states. [2021-11-25 20:35:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10349 to 10347. [2021-11-25 20:35:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10347 states, 6302 states have (on average 1.2962551570929863) internal successors, (8169), 6438 states have internal predecessors, (8169), 3376 states have call successors, (3376), 666 states have call predecessors, (3376), 666 states have return successors, (3382), 3349 states have call predecessors, (3382), 3372 states have call successors, (3382) [2021-11-25 20:35:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10347 states to 10347 states and 14927 transitions. [2021-11-25 20:35:03,962 INFO L78 Accepts]: Start accepts. Automaton has 10347 states and 14927 transitions. Word has length 662 [2021-11-25 20:35:03,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:03,963 INFO L470 AbstractCegarLoop]: Abstraction has 10347 states and 14927 transitions. [2021-11-25 20:35:03,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2021-11-25 20:35:03,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10347 states and 14927 transitions. [2021-11-25 20:35:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2021-11-25 20:35:03,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:03,981 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:03,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:35:03,981 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:35:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1074516951, now seen corresponding path program 1 times [2021-11-25 20:35:03,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:03,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51296461] [2021-11-25 20:35:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:03,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13647 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13637 trivial. 0 not checked. [2021-11-25 20:35:04,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:04,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51296461] [2021-11-25 20:35:04,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51296461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:04,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:04,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:35:04,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744397031] [2021-11-25 20:35:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:04,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:35:04,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:35:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:35:04,563 INFO L87 Difference]: Start difference. First operand 10347 states and 14927 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-25 20:35:07,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:15,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:17,423 INFO L93 Difference]: Finished difference Result 11071 states and 15822 transitions. [2021-11-25 20:35:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:35:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 661 [2021-11-25 20:35:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:17,473 INFO L225 Difference]: With dead ends: 11071 [2021-11-25 20:35:17,474 INFO L226 Difference]: Without dead ends: 11069 [2021-11-25 20:35:17,480 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:35:17,481 INFO L933 BasicCegarLoop]: 3877 mSDtfsCounter, 4038 mSDsluCounter, 9396 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4053 SdHoareTripleChecker+Valid, 11985 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:17,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4053 Valid, 11985 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1922 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2021-11-25 20:35:17,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11069 states. [2021-11-25 20:35:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11069 to 11069. [2021-11-25 20:35:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11069 states, 6703 states have (on average 1.291063702819633) internal successors, (8654), 6863 states have internal predecessors, (8654), 3580 states have call successors, (3580), 783 states have call predecessors, (3580), 783 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:35:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 15820 transitions. [2021-11-25 20:35:18,149 INFO L78 Accepts]: Start accepts. Automaton has 11069 states and 15820 transitions. Word has length 661 [2021-11-25 20:35:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:18,150 INFO L470 AbstractCegarLoop]: Abstraction has 11069 states and 15820 transitions. [2021-11-25 20:35:18,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-25 20:35:18,151 INFO L276 IsEmpty]: Start isEmpty. Operand 11069 states and 15820 transitions. [2021-11-25 20:35:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2021-11-25 20:35:18,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:18,170 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 7, 6, 6, 4, 4, 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] [2021-11-25 20:35:18,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:35:18,170 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:35:18,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1177241192, now seen corresponding path program 1 times [2021-11-25 20:35:18,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:18,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879557519] [2021-11-25 20:35:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:18,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 13672 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13660 trivial. 0 not checked. [2021-11-25 20:35:18,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:18,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879557519] [2021-11-25 20:35:18,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879557519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:18,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:18,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:35:18,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49385563] [2021-11-25 20:35:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:18,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:35:18,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:18,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:35:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:35:18,745 INFO L87 Difference]: Start difference. First operand 11069 states and 15820 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2021-11-25 20:35:25,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:27,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:27,947 INFO L93 Difference]: Finished difference Result 11075 states and 15825 transitions. [2021-11-25 20:35:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:35:27,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 672 [2021-11-25 20:35:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:27,991 INFO L225 Difference]: With dead ends: 11075 [2021-11-25 20:35:27,991 INFO L226 Difference]: Without dead ends: 11073 [2021-11-25 20:35:27,997 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:35:27,997 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4226 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:27,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4226 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-11-25 20:35:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11073 states. [2021-11-25 20:35:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 11073. [2021-11-25 20:35:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11073 states, 6706 states have (on average 1.2909334923948703) internal successors, (8657), 6866 states have internal predecessors, (8657), 3580 states have call successors, (3580), 784 states have call predecessors, (3580), 784 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:35:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11073 states to 11073 states and 15823 transitions. [2021-11-25 20:35:28,651 INFO L78 Accepts]: Start accepts. Automaton has 11073 states and 15823 transitions. Word has length 672 [2021-11-25 20:35:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:28,652 INFO L470 AbstractCegarLoop]: Abstraction has 11073 states and 15823 transitions. [2021-11-25 20:35:28,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2021-11-25 20:35:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 11073 states and 15823 transitions. [2021-11-25 20:35:28,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2021-11-25 20:35:28,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:28,674 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 8, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:28,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:35:28,674 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:35:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1640992791, now seen corresponding path program 1 times [2021-11-25 20:35:28,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:28,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417799319] [2021-11-25 20:35:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:28,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13681 trivial. 0 not checked. [2021-11-25 20:35:29,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:29,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417799319] [2021-11-25 20:35:29,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417799319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:29,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:29,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:35:29,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167151359] [2021-11-25 20:35:29,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:29,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:35:29,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:29,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:35:29,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:35:29,265 INFO L87 Difference]: Start difference. First operand 11073 states and 15823 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2021-11-25 20:35:32,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:39,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:39,975 INFO L93 Difference]: Finished difference Result 11079 states and 15828 transitions. [2021-11-25 20:35:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:35:39,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 671 [2021-11-25 20:35:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:40,023 INFO L225 Difference]: With dead ends: 11079 [2021-11-25 20:35:40,024 INFO L226 Difference]: Without dead ends: 11077 [2021-11-25 20:35:40,029 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:35:40,030 INFO L933 BasicCegarLoop]: 3877 mSDtfsCounter, 4063 mSDsluCounter, 9366 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 11959 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:40,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4074 Valid, 11959 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1919 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2021-11-25 20:35:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2021-11-25 20:35:40,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 11077. [2021-11-25 20:35:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 6709 states have (on average 1.2908033984200329) internal successors, (8660), 6869 states have internal predecessors, (8660), 3580 states have call successors, (3580), 785 states have call predecessors, (3580), 785 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:35:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 15826 transitions. [2021-11-25 20:35:40,676 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 15826 transitions. Word has length 671 [2021-11-25 20:35:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:40,677 INFO L470 AbstractCegarLoop]: Abstraction has 11077 states and 15826 transitions. [2021-11-25 20:35:40,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2021-11-25 20:35:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 15826 transitions. [2021-11-25 20:35:40,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2021-11-25 20:35:40,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:40,699 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 9, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:40,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:35:40,700 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:35:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:40,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1568532023, now seen corresponding path program 1 times [2021-11-25 20:35:40,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:40,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305427308] [2021-11-25 20:35:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:40,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13725 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13709 trivial. 0 not checked. [2021-11-25 20:35:41,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305427308] [2021-11-25 20:35:41,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305427308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:41,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:41,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:35:41,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039283712] [2021-11-25 20:35:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:41,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:35:41,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:35:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:35:41,327 INFO L87 Difference]: Start difference. First operand 11077 states and 15826 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2021-11-25 20:35:44,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:51,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:53,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:55,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:57,457 INFO L93 Difference]: Finished difference Result 11083 states and 15831 transitions. [2021-11-25 20:35:57,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:35:57,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 676 [2021-11-25 20:35:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:57,496 INFO L225 Difference]: With dead ends: 11083 [2021-11-25 20:35:57,496 INFO L226 Difference]: Without dead ends: 11081 [2021-11-25 20:35:57,501 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:35:57,502 INFO L933 BasicCegarLoop]: 3877 mSDtfsCounter, 4063 mSDsluCounter, 9366 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 11959 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:57,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4073 Valid, 11959 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1916 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2021-11-25 20:35:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11081 states. [2021-11-25 20:35:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11081 to 11081. [2021-11-25 20:35:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11081 states, 6712 states have (on average 1.290673420738975) internal successors, (8663), 6872 states have internal predecessors, (8663), 3580 states have call successors, (3580), 786 states have call predecessors, (3580), 786 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:35:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11081 states to 11081 states and 15829 transitions. [2021-11-25 20:35:58,171 INFO L78 Accepts]: Start accepts. Automaton has 11081 states and 15829 transitions. Word has length 676 [2021-11-25 20:35:58,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:58,172 INFO L470 AbstractCegarLoop]: Abstraction has 11081 states and 15829 transitions. [2021-11-25 20:35:58,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2021-11-25 20:35:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 11081 states and 15829 transitions. [2021-11-25 20:35:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2021-11-25 20:35:58,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:58,192 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 10, 9, 9, 4, 4, 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] [2021-11-25 20:35:58,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:35:58,193 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:35:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash 921656929, now seen corresponding path program 1 times [2021-11-25 20:35:58,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:58,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29460466] [2021-11-25 20:35:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:58,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13763 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13745 trivial. 0 not checked. [2021-11-25 20:35:58,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:58,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29460466] [2021-11-25 20:35:58,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29460466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:58,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:58,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:35:58,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131613594] [2021-11-25 20:35:58,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:58,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:35:58,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:58,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:35:58,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:35:58,758 INFO L87 Difference]: Start difference. First operand 11081 states and 15829 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-25 20:36:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:06,201 INFO L93 Difference]: Finished difference Result 11087 states and 15834 transitions. [2021-11-25 20:36:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:36:06,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 688 [2021-11-25 20:36:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:06,233 INFO L225 Difference]: With dead ends: 11087 [2021-11-25 20:36:06,234 INFO L226 Difference]: Without dead ends: 11085 [2021-11-25 20:36:06,239 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:36:06,239 INFO L933 BasicCegarLoop]: 3791 mSDtfsCounter, 4240 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:06,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4246 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 20:36:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11085 states. [2021-11-25 20:36:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11085 to 11085. [2021-11-25 20:36:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11085 states, 6715 states have (on average 1.2905435591958303) internal successors, (8666), 6875 states have internal predecessors, (8666), 3580 states have call successors, (3580), 787 states have call predecessors, (3580), 787 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:36:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11085 states to 11085 states and 15832 transitions. [2021-11-25 20:36:06,850 INFO L78 Accepts]: Start accepts. Automaton has 11085 states and 15832 transitions. Word has length 688 [2021-11-25 20:36:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:06,851 INFO L470 AbstractCegarLoop]: Abstraction has 11085 states and 15832 transitions. [2021-11-25 20:36:06,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-25 20:36:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 11085 states and 15832 transitions. [2021-11-25 20:36:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2021-11-25 20:36:06,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:06,871 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 11, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:06,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:36:06,871 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:36:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1888771465, now seen corresponding path program 1 times [2021-11-25 20:36:06,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:06,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120115582] [2021-11-25 20:36:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:06,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13797 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13777 trivial. 0 not checked. [2021-11-25 20:36:07,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:07,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120115582] [2021-11-25 20:36:07,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120115582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:07,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:07,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:07,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621381455] [2021-11-25 20:36:07,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:07,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:07,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:07,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:07,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:07,438 INFO L87 Difference]: Start difference. First operand 11085 states and 15832 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-25 20:36:15,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:17,823 INFO L93 Difference]: Finished difference Result 11091 states and 15837 transitions. [2021-11-25 20:36:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:36:17,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 686 [2021-11-25 20:36:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:17,860 INFO L225 Difference]: With dead ends: 11091 [2021-11-25 20:36:17,860 INFO L226 Difference]: Without dead ends: 11089 [2021-11-25 20:36:17,866 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:36:17,867 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4216 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4223 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:17,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4223 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 20:36:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2021-11-25 20:36:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 11089. [2021-11-25 20:36:18,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11089 states, 6718 states have (on average 1.2904138136350105) internal successors, (8669), 6878 states have internal predecessors, (8669), 3580 states have call successors, (3580), 788 states have call predecessors, (3580), 788 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:36:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11089 states to 11089 states and 15835 transitions. [2021-11-25 20:36:18,458 INFO L78 Accepts]: Start accepts. Automaton has 11089 states and 15835 transitions. Word has length 686 [2021-11-25 20:36:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:18,458 INFO L470 AbstractCegarLoop]: Abstraction has 11089 states and 15835 transitions. [2021-11-25 20:36:18,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-25 20:36:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 11089 states and 15835 transitions. [2021-11-25 20:36:18,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2021-11-25 20:36:18,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:18,472 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 12, 11, 11, 4, 4, 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] [2021-11-25 20:36:18,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:36:18,472 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:36:18,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash -966860102, now seen corresponding path program 1 times [2021-11-25 20:36:18,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:18,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044714544] [2021-11-25 20:36:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:18,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13842 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13820 trivial. 0 not checked. [2021-11-25 20:36:19,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:19,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044714544] [2021-11-25 20:36:19,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044714544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:19,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:19,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:19,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956219299] [2021-11-25 20:36:19,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:19,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:19,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:19,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:19,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:19,009 INFO L87 Difference]: Start difference. First operand 11089 states and 15835 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2021-11-25 20:36:21,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:28,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:31,263 INFO L93 Difference]: Finished difference Result 11095 states and 15840 transitions. [2021-11-25 20:36:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:36:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 697 [2021-11-25 20:36:31,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:31,291 INFO L225 Difference]: With dead ends: 11095 [2021-11-25 20:36:31,291 INFO L226 Difference]: Without dead ends: 11093 [2021-11-25 20:36:31,296 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:36:31,296 INFO L933 BasicCegarLoop]: 3791 mSDtfsCounter, 4240 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4244 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:31,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4244 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1824 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2021-11-25 20:36:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11093 states. [2021-11-25 20:36:31,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11093 to 11093. [2021-11-25 20:36:31,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11093 states, 6721 states have (on average 1.2902841839012051) internal successors, (8672), 6881 states have internal predecessors, (8672), 3580 states have call successors, (3580), 789 states have call predecessors, (3580), 789 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:36:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11093 states to 11093 states and 15838 transitions. [2021-11-25 20:36:31,912 INFO L78 Accepts]: Start accepts. Automaton has 11093 states and 15838 transitions. Word has length 697 [2021-11-25 20:36:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:31,912 INFO L470 AbstractCegarLoop]: Abstraction has 11093 states and 15838 transitions. [2021-11-25 20:36:31,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2021-11-25 20:36:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 11093 states and 15838 transitions. [2021-11-25 20:36:31,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2021-11-25 20:36:31,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:31,923 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 13, 12, 12, 4, 4, 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] [2021-11-25 20:36:31,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:36:31,924 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:36:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1420042392, now seen corresponding path program 1 times [2021-11-25 20:36:31,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:31,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270099056] [2021-11-25 20:36:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:31,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13888 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 13864 trivial. 0 not checked. [2021-11-25 20:36:32,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270099056] [2021-11-25 20:36:32,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270099056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:32,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:32,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:32,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663049789] [2021-11-25 20:36:32,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:32,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:32,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:32,462 INFO L87 Difference]: Start difference. First operand 11093 states and 15838 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2021-11-25 20:36:40,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:41,980 INFO L93 Difference]: Finished difference Result 11099 states and 15843 transitions. [2021-11-25 20:36:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:36:41,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 702 [2021-11-25 20:36:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:42,020 INFO L225 Difference]: With dead ends: 11099 [2021-11-25 20:36:42,020 INFO L226 Difference]: Without dead ends: 11097 [2021-11-25 20:36:42,028 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:36:42,029 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:42,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-25 20:36:42,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11097 states. [2021-11-25 20:36:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11097 to 11097. [2021-11-25 20:36:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11097 states, 6724 states have (on average 1.2901546698393813) internal successors, (8675), 6884 states have internal predecessors, (8675), 3580 states have call successors, (3580), 790 states have call predecessors, (3580), 790 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:36:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11097 states to 11097 states and 15841 transitions. [2021-11-25 20:36:42,641 INFO L78 Accepts]: Start accepts. Automaton has 11097 states and 15841 transitions. Word has length 702 [2021-11-25 20:36:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:42,642 INFO L470 AbstractCegarLoop]: Abstraction has 11097 states and 15841 transitions. [2021-11-25 20:36:42,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2021-11-25 20:36:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 11097 states and 15841 transitions. [2021-11-25 20:36:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2021-11-25 20:36:42,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:42,738 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 14, 13, 13, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:42,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:36:42,738 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:36:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:42,739 INFO L85 PathProgramCache]: Analyzing trace with hash -882558167, now seen corresponding path program 1 times [2021-11-25 20:36:42,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:42,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045125236] [2021-11-25 20:36:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:42,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13935 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13909 trivial. 0 not checked. [2021-11-25 20:36:43,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:43,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045125236] [2021-11-25 20:36:43,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045125236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:43,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:43,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:43,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162508257] [2021-11-25 20:36:43,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:43,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:43,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:43,236 INFO L87 Difference]: Start difference. First operand 11097 states and 15841 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-25 20:36:46,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:53,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:55,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:58,403 INFO L93 Difference]: Finished difference Result 11103 states and 15846 transitions. [2021-11-25 20:36:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:36:58,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 701 [2021-11-25 20:36:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:58,432 INFO L225 Difference]: With dead ends: 11103 [2021-11-25 20:36:58,432 INFO L226 Difference]: Without dead ends: 11101 [2021-11-25 20:36:58,437 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:36:58,438 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4216 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:58,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1845 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2021-11-25 20:36:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11101 states. [2021-11-25 20:36:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11101 to 11101. [2021-11-25 20:36:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11101 states, 6727 states have (on average 1.2900252712947822) internal successors, (8678), 6887 states have internal predecessors, (8678), 3580 states have call successors, (3580), 791 states have call predecessors, (3580), 791 states have return successors, (3586), 3553 states have call predecessors, (3586), 3576 states have call successors, (3586) [2021-11-25 20:36:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 15844 transitions. [2021-11-25 20:36:59,140 INFO L78 Accepts]: Start accepts. Automaton has 11101 states and 15844 transitions. Word has length 701 [2021-11-25 20:36:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:59,141 INFO L470 AbstractCegarLoop]: Abstraction has 11101 states and 15844 transitions. [2021-11-25 20:36:59,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-25 20:36:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 11101 states and 15844 transitions. [2021-11-25 20:36:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2021-11-25 20:36:59,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:59,152 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 15, 14, 14, 4, 4, 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] [2021-11-25 20:36:59,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:36:59,152 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:36:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash -497206959, now seen corresponding path program 1 times [2021-11-25 20:36:59,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:59,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315586271] [2021-11-25 20:36:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:59,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13993 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 13965 trivial. 0 not checked. [2021-11-25 20:36:59,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:59,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315586271] [2021-11-25 20:36:59,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315586271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:59,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:59,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:59,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357032654] [2021-11-25 20:36:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:59,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:59,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:59,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:59,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:59,640 INFO L87 Difference]: Start difference. First operand 11101 states and 15844 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-11-25 20:37:08,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:08,466 INFO L93 Difference]: Finished difference Result 11433 states and 16288 transitions. [2021-11-25 20:37:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:37:08,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 713 [2021-11-25 20:37:08,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:08,495 INFO L225 Difference]: With dead ends: 11433 [2021-11-25 20:37:08,495 INFO L226 Difference]: Without dead ends: 11429 [2021-11-25 20:37:08,501 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:37:08,502 INFO L933 BasicCegarLoop]: 3901 mSDtfsCounter, 4228 mSDsluCounter, 9222 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4229 SdHoareTripleChecker+Valid, 11890 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:08,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4229 Valid, 11890 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 20:37:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11429 states. [2021-11-25 20:37:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11429 to 11427. [2021-11-25 20:37:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11427 states, 6909 states have (on average 1.28774062816616) internal successors, (8897), 7078 states have internal predecessors, (8897), 3690 states have call successors, (3690), 826 states have call predecessors, (3690), 825 states have return successors, (3696), 3663 states have call predecessors, (3696), 3686 states have call successors, (3696) [2021-11-25 20:37:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11427 states to 11427 states and 16283 transitions. [2021-11-25 20:37:09,222 INFO L78 Accepts]: Start accepts. Automaton has 11427 states and 16283 transitions. Word has length 713 [2021-11-25 20:37:09,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:09,223 INFO L470 AbstractCegarLoop]: Abstraction has 11427 states and 16283 transitions. [2021-11-25 20:37:09,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-11-25 20:37:09,223 INFO L276 IsEmpty]: Start isEmpty. Operand 11427 states and 16283 transitions. [2021-11-25 20:37:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2021-11-25 20:37:09,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:09,234 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 16, 15, 15, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:37:09,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:37:09,234 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:37:09,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1063158039, now seen corresponding path program 1 times [2021-11-25 20:37:09,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:09,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092971664] [2021-11-25 20:37:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:09,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14047 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14017 trivial. 0 not checked. [2021-11-25 20:37:09,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092971664] [2021-11-25 20:37:09,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092971664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:09,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:09,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:37:09,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852625311] [2021-11-25 20:37:09,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:09,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:37:09,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:37:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:37:09,735 INFO L87 Difference]: Start difference. First operand 11427 states and 16283 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2021-11-25 20:37:12,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:20,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:23,965 INFO L93 Difference]: Finished difference Result 11427 states and 16283 transitions. [2021-11-25 20:37:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:37:23,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 711 [2021-11-25 20:37:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:23,995 INFO L225 Difference]: With dead ends: 11427 [2021-11-25 20:37:23,995 INFO L226 Difference]: Without dead ends: 11318 [2021-11-25 20:37:24,001 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:37:24,001 INFO L933 BasicCegarLoop]: 3820 mSDtfsCounter, 4212 mSDsluCounter, 8984 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 11580 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:24,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4214 Valid, 11580 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1841 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2021-11-25 20:37:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11318 states. [2021-11-25 20:37:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11318 to 11318. [2021-11-25 20:37:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11318 states, 6853 states have (on average 1.2892164015759522) internal successors, (8835), 7016 states have internal predecessors, (8835), 3657 states have call successors, (3657), 805 states have call predecessors, (3657), 806 states have return successors, (3667), 3637 states have call predecessors, (3667), 3657 states have call successors, (3667) [2021-11-25 20:37:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11318 states to 11318 states and 16159 transitions. [2021-11-25 20:37:24,724 INFO L78 Accepts]: Start accepts. Automaton has 11318 states and 16159 transitions. Word has length 711 [2021-11-25 20:37:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:24,725 INFO L470 AbstractCegarLoop]: Abstraction has 11318 states and 16159 transitions. [2021-11-25 20:37:24,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2021-11-25 20:37:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11318 states and 16159 transitions. [2021-11-25 20:37:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2021-11-25 20:37:24,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:24,755 INFO L514 BasicCegarLoop]: trace histogram [65, 59, 59, 59, 59, 59, 59, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:37:24,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:37:24,756 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:37:24,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1006489269, now seen corresponding path program 1 times [2021-11-25 20:37:24,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:24,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403506556] [2021-11-25 20:37:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:24,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14523 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14514 trivial. 0 not checked. [2021-11-25 20:37:25,428 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:25,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403506556] [2021-11-25 20:37:25,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403506556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:25,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:25,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:37:25,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531995996] [2021-11-25 20:37:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:25,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:37:25,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:37:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:37:25,436 INFO L87 Difference]: Start difference. First operand 11318 states and 16159 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2021-11-25 20:37:32,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:36,270 INFO L93 Difference]: Finished difference Result 21217 states and 30341 transitions. [2021-11-25 20:37:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:37:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) Word has length 820 [2021-11-25 20:37:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:36,306 INFO L225 Difference]: With dead ends: 21217 [2021-11-25 20:37:36,306 INFO L226 Difference]: Without dead ends: 10034 [2021-11-25 20:37:36,353 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:37:36,354 INFO L933 BasicCegarLoop]: 5514 mSDtfsCounter, 2875 mSDsluCounter, 4285 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2877 SdHoareTripleChecker+Valid, 9216 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:36,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2877 Valid, 9216 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1500 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2021-11-25 20:37:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10034 states. [2021-11-25 20:37:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10034 to 10028. [2021-11-25 20:37:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10028 states, 6066 states have (on average 1.292449719749423) internal successors, (7840), 6206 states have internal predecessors, (7840), 3239 states have call successors, (3239), 719 states have call predecessors, (3239), 721 states have return successors, (3248), 3221 states have call predecessors, (3248), 3239 states have call successors, (3248) [2021-11-25 20:37:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10028 states to 10028 states and 14327 transitions. [2021-11-25 20:37:37,060 INFO L78 Accepts]: Start accepts. Automaton has 10028 states and 14327 transitions. Word has length 820 [2021-11-25 20:37:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:37,061 INFO L470 AbstractCegarLoop]: Abstraction has 10028 states and 14327 transitions. [2021-11-25 20:37:37,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2021-11-25 20:37:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10028 states and 14327 transitions. [2021-11-25 20:37:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2021-11-25 20:37:37,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:37,087 INFO L514 BasicCegarLoop]: trace histogram [69, 60, 60, 60, 60, 60, 60, 12, 12, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:37:37,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:37:37,087 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:37:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1570415728, now seen corresponding path program 1 times [2021-11-25 20:37:37,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492980758] [2021-11-25 20:37:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:37,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15533 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15518 trivial. 0 not checked. [2021-11-25 20:37:37,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:37,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492980758] [2021-11-25 20:37:37,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492980758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:37,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:37,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:37:37,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720049150] [2021-11-25 20:37:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:37,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:37:37,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:37:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:37:37,664 INFO L87 Difference]: Start difference. First operand 10028 states and 14327 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2021-11-25 20:37:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:46,681 INFO L93 Difference]: Finished difference Result 22871 states and 32598 transitions. [2021-11-25 20:37:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:37:46,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 892 [2021-11-25 20:37:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:46,717 INFO L225 Difference]: With dead ends: 22871 [2021-11-25 20:37:46,717 INFO L226 Difference]: Without dead ends: 13633 [2021-11-25 20:37:46,740 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:37:46,740 INFO L933 BasicCegarLoop]: 6186 mSDtfsCounter, 2898 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2898 SdHoareTripleChecker+Valid, 9880 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:46,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2898 Valid, 9880 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1693 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 20:37:46,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13633 states. [2021-11-25 20:37:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13633 to 13623. [2021-11-25 20:37:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13623 states, 8224 states have (on average 1.2917071984435797) internal successors, (10623), 8422 states have internal predecessors, (10623), 4394 states have call successors, (4394), 1000 states have call predecessors, (4394), 1003 states have return successors, (4405), 4368 states have call predecessors, (4405), 4394 states have call successors, (4405) [2021-11-25 20:37:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 19422 transitions. [2021-11-25 20:37:47,500 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 19422 transitions. Word has length 892 [2021-11-25 20:37:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:47,500 INFO L470 AbstractCegarLoop]: Abstraction has 13623 states and 19422 transitions. [2021-11-25 20:37:47,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2021-11-25 20:37:47,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 19422 transitions. [2021-11-25 20:37:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2021-11-25 20:37:47,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:47,530 INFO L514 BasicCegarLoop]: trace histogram [71, 60, 60, 60, 60, 60, 60, 16, 16, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:37:47,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 20:37:47,530 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:37:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash 888497781, now seen corresponding path program 1 times [2021-11-25 20:37:47,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:47,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390543010] [2021-11-25 20:37:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:47,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16023 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2021-11-25 20:37:48,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:48,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390543010] [2021-11-25 20:37:48,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390543010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:48,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:48,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:37:48,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843913417] [2021-11-25 20:37:48,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:48,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:37:48,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:37:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:37:48,191 INFO L87 Difference]: Start difference. First operand 13623 states and 19422 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-11-25 20:37:51,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:38:00,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:38:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:38:11,836 INFO L93 Difference]: Finished difference Result 42715 states and 63796 transitions. [2021-11-25 20:38:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:38:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 958 [2021-11-25 20:38:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:38:11,913 INFO L225 Difference]: With dead ends: 42715 [2021-11-25 20:38:11,913 INFO L226 Difference]: Without dead ends: 29882 [2021-11-25 20:38:11,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:38:11,942 INFO L933 BasicCegarLoop]: 7720 mSDtfsCounter, 3490 mSDsluCounter, 13569 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 993 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4447 SdHoareTripleChecker+Valid, 19524 SdHoareTripleChecker+Invalid, 3963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:38:11,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4447 Valid, 19524 Invalid, 3963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [993 Valid, 2968 Invalid, 2 Unknown, 0 Unchecked, 21.9s Time] [2021-11-25 20:38:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29882 states. [2021-11-25 20:38:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29882 to 13627. [2021-11-25 20:38:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13627 states, 8228 states have (on average 1.2915653864851726) internal successors, (10627), 8426 states have internal predecessors, (10627), 4394 states have call successors, (4394), 1000 states have call predecessors, (4394), 1003 states have return successors, (4405), 4368 states have call predecessors, (4405), 4394 states have call successors, (4405) [2021-11-25 20:38:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13627 states to 13627 states and 19426 transitions. [2021-11-25 20:38:13,410 INFO L78 Accepts]: Start accepts. Automaton has 13627 states and 19426 transitions. Word has length 958 [2021-11-25 20:38:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:38:13,411 INFO L470 AbstractCegarLoop]: Abstraction has 13627 states and 19426 transitions. [2021-11-25 20:38:13,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-11-25 20:38:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 13627 states and 19426 transitions. [2021-11-25 20:38:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2021-11-25 20:38:13,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:38:13,433 INFO L514 BasicCegarLoop]: trace histogram [71, 60, 60, 60, 60, 60, 60, 16, 16, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:38:13,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 20:38:13,433 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:38:13,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:38:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1500509256, now seen corresponding path program 1 times [2021-11-25 20:38:13,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:38:13,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964788293] [2021-11-25 20:38:13,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:38:13,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:38:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:38:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16025 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2021-11-25 20:38:14,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:38:14,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964788293] [2021-11-25 20:38:14,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964788293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:38:14,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:38:14,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:38:14,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620038312] [2021-11-25 20:38:14,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:38:14,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:38:14,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:38:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:38:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:38:14,061 INFO L87 Difference]: Start difference. First operand 13627 states and 19426 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2021-11-25 20:38:17,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:38:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:38:24,841 INFO L93 Difference]: Finished difference Result 30388 states and 43411 transitions. [2021-11-25 20:38:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:38:24,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) Word has length 965 [2021-11-25 20:38:24,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:38:24,892 INFO L225 Difference]: With dead ends: 30388 [2021-11-25 20:38:24,892 INFO L226 Difference]: Without dead ends: 17551 [2021-11-25 20:38:24,918 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:38:24,918 INFO L933 BasicCegarLoop]: 6410 mSDtfsCounter, 3137 mSDsluCounter, 4243 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 10103 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:38:24,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3137 Valid, 10103 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1676 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 20:38:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17551 states. [2021-11-25 20:38:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17551 to 17549. [2021-11-25 20:38:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17549 states, 10668 states have (on average 1.3023997000374954) internal successors, (13894), 10906 states have internal predecessors, (13894), 5628 states have call successors, (5628), 1249 states have call predecessors, (5628), 1251 states have return successors, (5640), 5594 states have call predecessors, (5640), 5628 states have call successors, (5640) [2021-11-25 20:38:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17549 states to 17549 states and 25162 transitions. [2021-11-25 20:38:26,206 INFO L78 Accepts]: Start accepts. Automaton has 17549 states and 25162 transitions. Word has length 965 [2021-11-25 20:38:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:38:26,207 INFO L470 AbstractCegarLoop]: Abstraction has 17549 states and 25162 transitions. [2021-11-25 20:38:26,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2021-11-25 20:38:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 17549 states and 25162 transitions. [2021-11-25 20:38:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2021-11-25 20:38:26,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:38:26,230 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:38:26,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 20:38:26,230 INFO L402 AbstractCegarLoop]: === Iteration 24 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:38:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:38:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash -62103269, now seen corresponding path program 1 times [2021-11-25 20:38:26,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:38:26,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584148690] [2021-11-25 20:38:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:38:26,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:38:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:38:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:38:27,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:38:27,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584148690] [2021-11-25 20:38:27,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584148690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:38:27,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:38:27,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:38:27,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345158590] [2021-11-25 20:38:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:38:27,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:38:27,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:38:27,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:38:27,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:38:27,142 INFO L87 Difference]: Start difference. First operand 17549 states and 25162 transitions. Second operand has 5 states, 5 states have (on average 51.0) internal successors, (255), 4 states have internal predecessors, (255), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:38:30,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:38:39,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:38:42,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:38:44,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:38:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:38:52,214 INFO L93 Difference]: Finished difference Result 37828 states and 54292 transitions. [2021-11-25 20:38:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:38:52,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 4 states have internal predecessors, (255), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 991 [2021-11-25 20:38:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:38:52,291 INFO L225 Difference]: With dead ends: 37828 [2021-11-25 20:38:52,291 INFO L226 Difference]: Without dead ends: 21069 [2021-11-25 20:38:52,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:38:52,334 INFO L933 BasicCegarLoop]: 6231 mSDtfsCounter, 2891 mSDsluCounter, 18693 mSDsCounter, 0 mSdLazyCounter, 3667 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 22388 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3667 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:38:52,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2894 Valid, 22388 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3667 Invalid, 4 Unknown, 0 Unchecked, 23.5s Time] [2021-11-25 20:38:52,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21069 states. [2021-11-25 20:38:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21069 to 21060. [2021-11-25 20:38:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21060 states, 12836 states have (on average 1.306559675911499) internal successors, (16771), 13107 states have internal predecessors, (16771), 6761 states have call successors, (6761), 1458 states have call predecessors, (6761), 1461 states have return successors, (6777), 6721 states have call predecessors, (6777), 6761 states have call successors, (6777) [2021-11-25 20:38:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21060 states to 21060 states and 30309 transitions. [2021-11-25 20:38:54,130 INFO L78 Accepts]: Start accepts. Automaton has 21060 states and 30309 transitions. Word has length 991 [2021-11-25 20:38:54,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:38:54,131 INFO L470 AbstractCegarLoop]: Abstraction has 21060 states and 30309 transitions. [2021-11-25 20:38:54,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 4 states have internal predecessors, (255), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:38:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 21060 states and 30309 transitions. [2021-11-25 20:38:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2021-11-25 20:38:54,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:38:54,172 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:38:54,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 20:38:54,173 INFO L402 AbstractCegarLoop]: === Iteration 25 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:38:54,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:38:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1017194015, now seen corresponding path program 1 times [2021-11-25 20:38:54,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:38:54,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626930043] [2021-11-25 20:38:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:38:54,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:38:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:38:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:38:55,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:38:55,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626930043] [2021-11-25 20:38:55,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626930043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:38:55,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:38:55,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:38:55,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517358352] [2021-11-25 20:38:55,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:38:55,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:38:55,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:38:55,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:38:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:38:55,154 INFO L87 Difference]: Start difference. First operand 21060 states and 30309 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 4 states have internal predecessors, (256), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:38:58,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:01,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:09,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:18,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:19,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:19,104 INFO L93 Difference]: Finished difference Result 44856 states and 64598 transitions. [2021-11-25 20:39:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:39:19,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 4 states have internal predecessors, (256), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 992 [2021-11-25 20:39:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:19,172 INFO L225 Difference]: With dead ends: 44856 [2021-11-25 20:39:19,172 INFO L226 Difference]: Without dead ends: 24586 [2021-11-25 20:39:19,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:39:19,209 INFO L933 BasicCegarLoop]: 6236 mSDtfsCounter, 2895 mSDsluCounter, 18689 mSDsCounter, 0 mSdLazyCounter, 3664 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2898 SdHoareTripleChecker+Valid, 22398 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3664 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:19,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2898 Valid, 22398 Invalid, 3670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3664 Invalid, 3 Unknown, 0 Unchecked, 22.2s Time] [2021-11-25 20:39:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24586 states. [2021-11-25 20:39:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24586 to 24575. [2021-11-25 20:39:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24575 states, 15008 states have (on average 1.3094349680170576) internal successors, (19652), 15313 states have internal predecessors, (19652), 7894 states have call successors, (7894), 1667 states have call predecessors, (7894), 1671 states have return successors, (7914), 7847 states have call predecessors, (7914), 7894 states have call successors, (7914) [2021-11-25 20:39:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24575 states to 24575 states and 35460 transitions. [2021-11-25 20:39:21,331 INFO L78 Accepts]: Start accepts. Automaton has 24575 states and 35460 transitions. Word has length 992 [2021-11-25 20:39:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:21,332 INFO L470 AbstractCegarLoop]: Abstraction has 24575 states and 35460 transitions. [2021-11-25 20:39:21,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 4 states have internal predecessors, (256), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:39:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 24575 states and 35460 transitions. [2021-11-25 20:39:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2021-11-25 20:39:21,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:21,360 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:21,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 20:39:21,360 INFO L402 AbstractCegarLoop]: === Iteration 26 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:39:21,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -520142558, now seen corresponding path program 1 times [2021-11-25 20:39:21,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:21,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392685264] [2021-11-25 20:39:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:21,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:39:21,888 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:21,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392685264] [2021-11-25 20:39:21,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392685264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:21,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:21,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:39:21,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878494150] [2021-11-25 20:39:21,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:21,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:39:21,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:39:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:39:21,891 INFO L87 Difference]: Start difference. First operand 24575 states and 35460 transitions. Second operand has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:39:25,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:36,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:42,862 INFO L93 Difference]: Finished difference Result 51919 states and 74942 transitions. [2021-11-25 20:39:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:39:42,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 993 [2021-11-25 20:39:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:43,064 INFO L225 Difference]: With dead ends: 51919 [2021-11-25 20:39:43,064 INFO L226 Difference]: Without dead ends: 28134 [2021-11-25 20:39:43,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:39:43,102 INFO L933 BasicCegarLoop]: 6237 mSDtfsCounter, 2914 mSDsluCounter, 18680 mSDsCounter, 0 mSdLazyCounter, 3672 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 22392 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3672 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:43,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 22392 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3672 Invalid, 2 Unknown, 0 Unchecked, 18.9s Time] [2021-11-25 20:39:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28134 states. [2021-11-25 20:39:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28134 to 28125. [2021-11-25 20:39:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28125 states, 17203 states have (on average 1.311166656978434) internal successors, (22556), 17541 states have internal predecessors, (22556), 9033 states have call successors, (9033), 1882 states have call predecessors, (9033), 1887 states have return successors, (9057), 8980 states have call predecessors, (9057), 9033 states have call successors, (9057) [2021-11-25 20:39:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28125 states to 28125 states and 40646 transitions. [2021-11-25 20:39:45,332 INFO L78 Accepts]: Start accepts. Automaton has 28125 states and 40646 transitions. Word has length 993 [2021-11-25 20:39:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:45,333 INFO L470 AbstractCegarLoop]: Abstraction has 28125 states and 40646 transitions. [2021-11-25 20:39:45,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:39:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 28125 states and 40646 transitions. [2021-11-25 20:39:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2021-11-25 20:39:45,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:45,375 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:45,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 20:39:45,375 INFO L402 AbstractCegarLoop]: === Iteration 27 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:39:45,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:45,376 INFO L85 PathProgramCache]: Analyzing trace with hash 940691096, now seen corresponding path program 1 times [2021-11-25 20:39:45,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:45,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962733381] [2021-11-25 20:39:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:45,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:39:46,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:46,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962733381] [2021-11-25 20:39:46,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962733381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:46,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:46,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:39:46,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896757581] [2021-11-25 20:39:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:46,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:39:46,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:39:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:39:46,010 INFO L87 Difference]: Start difference. First operand 28125 states and 40646 transitions. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:39:49,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:59,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:06,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:06,718 INFO L93 Difference]: Finished difference Result 59214 states and 85582 transitions. [2021-11-25 20:40:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:40:06,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 994 [2021-11-25 20:40:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:06,807 INFO L225 Difference]: With dead ends: 59214 [2021-11-25 20:40:06,807 INFO L226 Difference]: Without dead ends: 31879 [2021-11-25 20:40:06,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:06,858 INFO L933 BasicCegarLoop]: 6310 mSDtfsCounter, 2993 mSDsluCounter, 18826 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 22604 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:06,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2996 Valid, 22604 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3686 Invalid, 2 Unknown, 0 Unchecked, 18.3s Time] [2021-11-25 20:40:06,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31879 states. [2021-11-25 20:40:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31879 to 31870. [2021-11-25 20:40:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31870 states, 19511 states have (on average 1.3124391368971349) internal successors, (25607), 19892 states have internal predecessors, (25607), 10231 states have call successors, (10231), 2120 states have call predecessors, (10231), 2126 states have return successors, (10259), 10172 states have call predecessors, (10259), 10231 states have call successors, (10259) [2021-11-25 20:40:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31870 states to 31870 states and 46097 transitions. [2021-11-25 20:40:09,344 INFO L78 Accepts]: Start accepts. Automaton has 31870 states and 46097 transitions. Word has length 994 [2021-11-25 20:40:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:09,345 INFO L470 AbstractCegarLoop]: Abstraction has 31870 states and 46097 transitions. [2021-11-25 20:40:09,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:40:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 31870 states and 46097 transitions. [2021-11-25 20:40:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2021-11-25 20:40:09,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:09,395 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:40:09,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 20:40:09,395 INFO L402 AbstractCegarLoop]: === Iteration 28 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:40:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:09,396 INFO L85 PathProgramCache]: Analyzing trace with hash 21324041, now seen corresponding path program 1 times [2021-11-25 20:40:09,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:09,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367880142] [2021-11-25 20:40:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:09,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:40:10,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:10,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367880142] [2021-11-25 20:40:10,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367880142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:10,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:40:10,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:40:10,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91076788] [2021-11-25 20:40:10,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:10,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:40:10,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:40:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:10,132 INFO L87 Difference]: Start difference. First operand 31870 states and 46097 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 4 states have internal predecessors, (259), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:40:21,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:23,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:25,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:33,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:33,436 INFO L93 Difference]: Finished difference Result 66805 states and 96615 transitions. [2021-11-25 20:40:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:40:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 4 states have internal predecessors, (259), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 995 [2021-11-25 20:40:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:33,535 INFO L225 Difference]: With dead ends: 66805 [2021-11-25 20:40:33,535 INFO L226 Difference]: Without dead ends: 35725 [2021-11-25 20:40:33,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:33,595 INFO L933 BasicCegarLoop]: 6413 mSDtfsCounter, 3097 mSDsluCounter, 19102 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 22934 SdHoareTripleChecker+Invalid, 3770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:33,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3097 Valid, 22934 Invalid, 3770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3760 Invalid, 3 Unknown, 0 Unchecked, 20.6s Time] [2021-11-25 20:40:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35725 states. [2021-11-25 20:40:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35725 to 35717. [2021-11-25 20:40:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35717 states, 21879 states have (on average 1.3127199597787833) internal successors, (28721), 22300 states have internal predecessors, (28721), 11462 states have call successors, (11462), 2366 states have call predecessors, (11462), 2374 states have return successors, (11494), 11398 states have call predecessors, (11494), 11462 states have call successors, (11494) [2021-11-25 20:40:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35717 states to 35717 states and 51677 transitions. [2021-11-25 20:40:36,393 INFO L78 Accepts]: Start accepts. Automaton has 35717 states and 51677 transitions. Word has length 995 [2021-11-25 20:40:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:36,395 INFO L470 AbstractCegarLoop]: Abstraction has 35717 states and 51677 transitions. [2021-11-25 20:40:36,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 4 states have internal predecessors, (259), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:40:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 35717 states and 51677 transitions. [2021-11-25 20:40:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2021-11-25 20:40:36,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:36,448 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:40:36,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 20:40:36,449 INFO L402 AbstractCegarLoop]: === Iteration 29 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:40:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1497990905, now seen corresponding path program 1 times [2021-11-25 20:40:36,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:36,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095098179] [2021-11-25 20:40:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:36,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:40:37,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:37,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095098179] [2021-11-25 20:40:37,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095098179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:37,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:40:37,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:40:37,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977850881] [2021-11-25 20:40:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:37,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:40:37,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:40:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:37,024 INFO L87 Difference]: Start difference. First operand 35717 states and 51677 transitions. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:40:40,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:50,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:59,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:00,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:00,630 INFO L93 Difference]: Finished difference Result 74212 states and 107394 transitions. [2021-11-25 20:41:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:41:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 996 [2021-11-25 20:41:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:00,751 INFO L225 Difference]: With dead ends: 74212 [2021-11-25 20:41:00,751 INFO L226 Difference]: Without dead ends: 39285 [2021-11-25 20:41:00,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:41:00,824 INFO L933 BasicCegarLoop]: 6241 mSDtfsCounter, 2901 mSDsluCounter, 18710 mSDsCounter, 0 mSdLazyCounter, 3693 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2904 SdHoareTripleChecker+Valid, 22416 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3693 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:41:00,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2904 Valid, 22416 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3693 Invalid, 3 Unknown, 0 Unchecked, 20.8s Time] [2021-11-25 20:41:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39285 states. [2021-11-25 20:41:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39285 to 39276. [2021-11-25 20:41:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39276 states, 24083 states have (on average 1.313540671843209) internal successors, (31634), 24537 states have internal predecessors, (31634), 12601 states have call successors, (12601), 2581 states have call predecessors, (12601), 2590 states have return successors, (12637), 12531 states have call predecessors, (12637), 12601 states have call successors, (12637) [2021-11-25 20:41:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39276 states to 39276 states and 56872 transitions. [2021-11-25 20:41:04,119 INFO L78 Accepts]: Start accepts. Automaton has 39276 states and 56872 transitions. Word has length 996 [2021-11-25 20:41:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:04,121 INFO L470 AbstractCegarLoop]: Abstraction has 39276 states and 56872 transitions. [2021-11-25 20:41:04,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:41:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 39276 states and 56872 transitions. [2021-11-25 20:41:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2021-11-25 20:41:04,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:04,411 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:41:04,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 20:41:04,411 INFO L402 AbstractCegarLoop]: === Iteration 30 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:41:04,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:04,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1393574953, now seen corresponding path program 1 times [2021-11-25 20:41:04,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:04,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929502649] [2021-11-25 20:41:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:04,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:41:05,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:05,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929502649] [2021-11-25 20:41:05,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929502649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:41:05,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:41:05,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:41:05,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613485970] [2021-11-25 20:41:05,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:41:05,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:41:05,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:41:05,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:41:05,016 INFO L87 Difference]: Start difference. First operand 39276 states and 56872 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:41:08,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:18,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:20,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:29,708 INFO L93 Difference]: Finished difference Result 81623 states and 118177 transitions. [2021-11-25 20:41:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:41:29,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 997 [2021-11-25 20:41:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:29,828 INFO L225 Difference]: With dead ends: 81623 [2021-11-25 20:41:29,828 INFO L226 Difference]: Without dead ends: 43137 [2021-11-25 20:41:29,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:41:29,896 INFO L933 BasicCegarLoop]: 6413 mSDtfsCounter, 3100 mSDsluCounter, 19100 mSDsCounter, 0 mSdLazyCounter, 3767 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 22932 SdHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3767 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:41:29,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3100 Valid, 22932 Invalid, 3778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3767 Invalid, 1 Unknown, 0 Unchecked, 21.5s Time] [2021-11-25 20:41:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43137 states. [2021-11-25 20:41:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43137 to 43129. [2021-11-25 20:41:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43129 states, 26457 states have (on average 1.313603205200892) internal successors, (34754), 26951 states have internal predecessors, (34754), 13832 states have call successors, (13832), 2827 states have call predecessors, (13832), 2838 states have return successors, (13872), 13757 states have call predecessors, (13872), 13832 states have call successors, (13872) [2021-11-25 20:41:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43129 states to 43129 states and 62458 transitions. [2021-11-25 20:41:33,431 INFO L78 Accepts]: Start accepts. Automaton has 43129 states and 62458 transitions. Word has length 997 [2021-11-25 20:41:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:33,433 INFO L470 AbstractCegarLoop]: Abstraction has 43129 states and 62458 transitions. [2021-11-25 20:41:33,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:41:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 43129 states and 62458 transitions. [2021-11-25 20:41:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2021-11-25 20:41:33,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:33,482 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:41:33,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 20:41:33,482 INFO L402 AbstractCegarLoop]: === Iteration 31 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:41:33,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:33,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1660386084, now seen corresponding path program 1 times [2021-11-25 20:41:33,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:33,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838797958] [2021-11-25 20:41:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:33,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:41:34,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:34,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838797958] [2021-11-25 20:41:34,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838797958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:41:34,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:41:34,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:41:34,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235195370] [2021-11-25 20:41:34,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:41:34,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:41:34,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:41:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:41:34,043 INFO L87 Difference]: Start difference. First operand 43129 states and 62458 transitions. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:41:37,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:39,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:50,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:59,085 INFO L93 Difference]: Finished difference Result 89370 states and 129389 transitions. [2021-11-25 20:41:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:41:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 998 [2021-11-25 20:41:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:59,216 INFO L225 Difference]: With dead ends: 89370 [2021-11-25 20:41:59,216 INFO L226 Difference]: Without dead ends: 47031 [2021-11-25 20:41:59,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:41:59,294 INFO L933 BasicCegarLoop]: 6419 mSDtfsCounter, 3136 mSDsluCounter, 19088 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 22925 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:41:59,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3136 Valid, 22925 Invalid, 3785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3771 Invalid, 3 Unknown, 0 Unchecked, 21.6s Time] [2021-11-25 20:41:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47031 states. [2021-11-25 20:42:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47031 to 47023. [2021-11-25 20:42:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47023 states, 28854 states have (on average 1.3134747348721147) internal successors, (37899), 29388 states have internal predecessors, (37899), 15069 states have call successors, (15069), 3085 states have call predecessors, (15069), 3098 states have return successors, (15113), 14989 states have call predecessors, (15113), 15069 states have call successors, (15113) [2021-11-25 20:42:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47023 states to 47023 states and 68081 transitions. [2021-11-25 20:42:04,371 INFO L78 Accepts]: Start accepts. Automaton has 47023 states and 68081 transitions. Word has length 998 [2021-11-25 20:42:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:42:04,372 INFO L470 AbstractCegarLoop]: Abstraction has 47023 states and 68081 transitions. [2021-11-25 20:42:04,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:42:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 47023 states and 68081 transitions. [2021-11-25 20:42:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2021-11-25 20:42:04,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:04,649 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:42:04,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 20:42:04,650 INFO L402 AbstractCegarLoop]: === Iteration 32 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:42:04,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1657845661, now seen corresponding path program 1 times [2021-11-25 20:42:04,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:42:04,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170654056] [2021-11-25 20:42:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:04,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:42:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:42:05,137 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:42:05,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170654056] [2021-11-25 20:42:05,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170654056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:42:05,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:42:05,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:42:05,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258306548] [2021-11-25 20:42:05,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:42:05,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:42:05,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:42:05,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:42:05,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:42:05,146 INFO L87 Difference]: Start difference. First operand 47023 states and 68081 transitions. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:42:08,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:42:15,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:42:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:42:29,311 INFO L93 Difference]: Finished difference Result 97123 states and 140607 transitions. [2021-11-25 20:42:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:42:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 999 [2021-11-25 20:42:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:42:29,476 INFO L225 Difference]: With dead ends: 97123 [2021-11-25 20:42:29,476 INFO L226 Difference]: Without dead ends: 50890 [2021-11-25 20:42:29,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:42:29,558 INFO L933 BasicCegarLoop]: 6413 mSDtfsCounter, 3100 mSDsluCounter, 19101 mSDsCounter, 0 mSdLazyCounter, 3773 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 22932 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3773 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:42:29,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3100 Valid, 22932 Invalid, 3787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3773 Invalid, 2 Unknown, 0 Unchecked, 20.3s Time] [2021-11-25 20:42:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50890 states. [2021-11-25 20:42:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50890 to 50882. [2021-11-25 20:42:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50882 states, 31234 states have (on average 1.3134724979189345) internal successors, (41025), 31808 states have internal predecessors, (41025), 16300 states have call successors, (16300), 3331 states have call predecessors, (16300), 3346 states have return successors, (16348), 16215 states have call predecessors, (16348), 16300 states have call successors, (16348) [2021-11-25 20:42:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50882 states to 50882 states and 73673 transitions. [2021-11-25 20:42:33,717 INFO L78 Accepts]: Start accepts. Automaton has 50882 states and 73673 transitions. Word has length 999 [2021-11-25 20:42:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:42:33,718 INFO L470 AbstractCegarLoop]: Abstraction has 50882 states and 73673 transitions. [2021-11-25 20:42:33,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2021-11-25 20:42:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 50882 states and 73673 transitions. [2021-11-25 20:42:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2021-11-25 20:42:33,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:33,768 INFO L514 BasicCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:42:33,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 20:42:33,768 INFO L402 AbstractCegarLoop]: === Iteration 33 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 20:42:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:33,769 INFO L85 PathProgramCache]: Analyzing trace with hash -104317601, now seen corresponding path program 1 times [2021-11-25 20:42:33,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:42:33,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085306175] [2021-11-25 20:42:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:33,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:42:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-25 20:42:34,699 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:42:34,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085306175] [2021-11-25 20:42:34,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085306175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:42:34,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:42:34,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:42:34,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000708289] [2021-11-25 20:42:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:42:34,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:42:34,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:42:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:42:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:42:34,702 INFO L87 Difference]: Start difference. First operand 50882 states and 73673 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112)