./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-can-softing-softing.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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/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 2a992b8f7caf2083ee3b7e2acdd5fd118d6f91728d6dd0ef901811e301ef25da --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:38:26,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:38:26,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:38:26,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:38:26,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:38:26,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:38:26,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:38:26,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:38:26,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:38:26,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:38:26,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:38:26,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:38:26,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:38:26,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:38:26,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:38:26,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:38:26,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:38:26,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:38:26,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:38:26,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:38:26,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:38:26,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:38:26,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:38:26,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:38:26,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:38:26,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:38:26,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:38:26,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:38:26,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:38:26,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:38:26,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:38:26,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:38:26,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:38:26,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:38:26,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:38:26,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:38:26,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:38:26,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:38:26,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:38:26,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:38:26,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:38:26,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:38:26,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:38:26,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:38:26,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:38:26,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:38:26,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:38:26,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:38:26,813 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:38:26,813 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:38:26,814 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:38:26,814 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:38:26,814 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:38:26,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:38:26,814 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:38:26,815 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:38:26,815 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:38:26,815 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:38:26,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:38:26,816 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:38:26,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:38:26,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:38:26,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:38:26,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:38:26,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:38:26,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:38:26,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:38:26,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:38:26,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:38:26,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:38:26,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:38:26,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:38:26,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:38:26,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:38:26,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:38:26,820 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:38:26,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:38:26,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:38:26,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:38:26,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:38:26,821 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a992b8f7caf2083ee3b7e2acdd5fd118d6f91728d6dd0ef901811e301ef25da [2021-11-25 18:38:27,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:38:27,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:38:27,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:38:27,132 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:38:27,133 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:38:27,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-25 18:38:27,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/data/8c8667c14/fd196d470d0b4102ba2f25d0e7f5d3b7/FLAG2570c79b4 [2021-11-25 18:38:28,091 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:38:28,092 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-25 18:38:28,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/data/8c8667c14/fd196d470d0b4102ba2f25d0e7f5d3b7/FLAG2570c79b4 [2021-11-25 18:38:28,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/data/8c8667c14/fd196d470d0b4102ba2f25d0e7f5d3b7 [2021-11-25 18:38:28,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:38:28,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:38:28,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:38:28,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:38:28,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:38:28,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:38:28" (1/1) ... [2021-11-25 18:38:28,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d58d696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:28, skipping insertion in model container [2021-11-25 18:38:28,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:38:28" (1/1) ... [2021-11-25 18:38:28,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:38:28,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:38:32,463 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375187,375200] [2021-11-25 18:38:32,468 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375356,375369] [2021-11-25 18:38:32,468 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375523,375536] [2021-11-25 18:38:32,469 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375691,375704] [2021-11-25 18:38:32,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:38:32,564 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:38:33,101 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375187,375200] [2021-11-25 18:38:33,102 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375356,375369] [2021-11-25 18:38:33,102 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375523,375536] [2021-11-25 18:38:33,103 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_6b5bf665-3691-485f-bb82-3e3c661fa5a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375691,375704] [2021-11-25 18:38:33,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:38:33,397 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:38:33,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33 WrapperNode [2021-11-25 18:38:33,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:38:33,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:38:33,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:38:33,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:38:33,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:33,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:33,858 INFO L137 Inliner]: procedures = 451, calls = 2315, calls flagged for inlining = 231, calls inlined = 218, statements flattened = 6436 [2021-11-25 18:38:33,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:38:33,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:38:33,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:38:33,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:38:33,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:33,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:33,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:33,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:34,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:34,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:34,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:34,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:38:34,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:38:34,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:38:34,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:38:34,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (1/1) ... [2021-11-25 18:38:34,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:38:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:38:34,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:38:34,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5bf665-3691-485f-bb82-3e3c661fa5a4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:38:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure softing_reset_chip [2021-11-25 18:38:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_reset_chip [2021-11-25 18:38:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 18:38:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_spin_of_softing [2021-11-25 18:38:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_spin_of_softing [2021-11-25 18:38:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:38:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:38:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:38:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:38:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:38:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:38:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:38:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:38:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2021-11-25 18:38:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2021-11-25 18:38:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-25 18:38:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-25 18:38:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:38:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:38:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-25 18:38:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-25 18:38:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 18:38:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 18:38:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-25 18:38:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-25 18:38:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2021-11-25 18:38:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2021-11-25 18:38:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:38:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure softing_fct_cmd [2021-11-25 18:38:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_fct_cmd [2021-11-25 18:38:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:38:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:38:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 18:38:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 18:38:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure canif_is_active [2021-11-25 18:38:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure canif_is_active [2021-11-25 18:38:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:38:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:38:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-25 18:38:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-25 18:38:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:38:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 18:38:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 18:38:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_open [2021-11-25 18:38:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_open [2021-11-25 18:38:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:38:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:38:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:38:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 18:38:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 18:38:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:38:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:38:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:38:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:38:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:38:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:38:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure open_candev [2021-11-25 18:38:34,464 INFO L138 BoogieDeclarations]: Found implementation of procedure open_candev [2021-11-25 18:38:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:38:34,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:38:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_rx [2021-11-25 18:38:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_rx [2021-11-25 18:38:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:38:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:38:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:38:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:38:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:38:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:38:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:38:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:38:34,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:38:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure softing_card_shutdown [2021-11-25 18:38:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_card_shutdown [2021-11-25 18:38:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:38:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:38:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:38:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:38:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:38:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-25 18:38:34,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-25 18:38:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:38:34,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:38:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_set [2021-11-25 18:38:34,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_set [2021-11-25 18:38:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_cleanup [2021-11-25 18:38:34,473 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_cleanup [2021-11-25 18:38:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:38:34,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:38:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure softing_startstop [2021-11-25 18:38:34,475 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_startstop [2021-11-25 18:38:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-25 18:38:34,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-25 18:38:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_add_us [2021-11-25 18:38:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_add_us [2021-11-25 18:38:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-25 18:38:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-25 18:38:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure softing_bootloader_command [2021-11-25 18:38:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_bootloader_command [2021-11-25 18:38:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-11-25 18:38:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-11-25 18:38:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_62 [2021-11-25 18:38:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_62 [2021-11-25 18:38:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure softing_raw2ktime [2021-11-25 18:38:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_raw2ktime [2021-11-25 18:38:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-25 18:38:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-25 18:38:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:38:34,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:38:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure store_output [2021-11-25 18:38:34,485 INFO L138 BoogieDeclarations]: Found implementation of procedure store_output [2021-11-25 18:38:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure softing_pdev_probe [2021-11-25 18:38:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_pdev_probe [2021-11-25 18:38:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:38:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:38:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_stop [2021-11-25 18:38:34,494 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_stop [2021-11-25 18:38:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-25 18:38:34,494 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-25 18:38:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:38:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:38:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 18:38:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 18:38:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-25 18:38:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-25 18:38:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:38:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:38:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:38:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:38:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_softing_driver_exit_21_2 [2021-11-25 18:38:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_softing_driver_exit_21_2 [2021-11-25 18:38:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:38:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:38:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure softing_set_reset_dpram [2021-11-25 18:38:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_set_reset_dpram [2021-11-25 18:38:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:38:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:38:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:38:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:38:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-25 18:38:34,498 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-25 18:38:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:38:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-25 18:38:34,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-25 18:38:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:38:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:38:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:38:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:38:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-25 18:38:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-25 18:38:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:38:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:38:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure fw_parse [2021-11-25 18:38:34,500 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_parse [2021-11-25 18:38:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:38:34,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:38:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-25 18:38:34,500 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-25 18:38:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:38:34,501 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:38:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:38:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:38:34,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:38:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_61 [2021-11-25 18:38:34,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_61 [2021-11-25 18:38:34,502 INFO L130 BoogieDeclarations]: Found specification of procedure _softing_fct_cmd [2021-11-25 18:38:34,502 INFO L138 BoogieDeclarations]: Found implementation of procedure _softing_fct_cmd [2021-11-25 18:38:34,502 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-25 18:38:34,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-25 18:38:34,502 INFO L130 BoogieDeclarations]: Found specification of procedure softing_error_reporting [2021-11-25 18:38:34,502 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_error_reporting [2021-11-25 18:38:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:38:34,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:38:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure softing_pdev_remove [2021-11-25 18:38:34,503 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_pdev_remove [2021-11-25 18:38:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_spin_of_softing [2021-11-25 18:38:34,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_spin_of_softing [2021-11-25 18:38:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure softing_enable_irq [2021-11-25 18:38:34,506 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_enable_irq [2021-11-25 18:38:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:38:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure softing_load_fw [2021-11-25 18:38:34,506 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_load_fw [2021-11-25 18:38:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:38:34,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:38:35,553 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:38:35,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:38:37,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:38:40,691 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:38:40,768 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:38:42,049 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:38:42,049 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:38:42,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:38:42 BoogieIcfgContainer [2021-11-25 18:38:42,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:38:42,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:38:42,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:38:42,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:38:42,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:38:28" (1/3) ... [2021-11-25 18:38:42,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7b3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:38:42, skipping insertion in model container [2021-11-25 18:38:42,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:38:33" (2/3) ... [2021-11-25 18:38:42,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7b3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:38:42, skipping insertion in model container [2021-11-25 18:38:42,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:38:42" (3/3) ... [2021-11-25 18:38:42,067 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-25 18:38:42,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:38:42,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:38:42,144 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:38:42,153 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 18:38:42,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:38:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 1696 states, 1056 states have (on average 1.3456439393939394) internal successors, (1421), 1070 states have internal predecessors, (1421), 555 states have call successors, (555), 83 states have call predecessors, (555), 82 states have return successors, (547), 547 states have call predecessors, (547), 547 states have call successors, (547) [2021-11-25 18:38:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-25 18:38:42,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:42,345 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:42,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:38:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1300419699, now seen corresponding path program 1 times [2021-11-25 18:38:42,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:42,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34457527] [2021-11-25 18:38:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:42,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-25 18:38:43,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:43,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34457527] [2021-11-25 18:38:43,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34457527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:43,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:43,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:43,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743700503] [2021-11-25 18:38:43,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:43,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:43,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:43,472 INFO L87 Difference]: Start difference. First operand has 1696 states, 1056 states have (on average 1.3456439393939394) internal successors, (1421), 1070 states have internal predecessors, (1421), 555 states have call successors, (555), 83 states have call predecessors, (555), 82 states have return successors, (547), 547 states have call predecessors, (547), 547 states have call successors, (547) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-25 18:38:46,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:48,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:49,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:49,832 INFO L93 Difference]: Finished difference Result 4804 states and 7311 transitions. [2021-11-25 18:38:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:38:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2021-11-25 18:38:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:49,904 INFO L225 Difference]: With dead ends: 4804 [2021-11-25 18:38:49,905 INFO L226 Difference]: Without dead ends: 3170 [2021-11-25 18:38:49,928 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 18:38:49,938 INFO L933 BasicCegarLoop]: 2708 mSDtfsCounter, 2226 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 4954 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:49,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 4954 Invalid, 631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 18:38:49,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-11-25 18:38:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3144. [2021-11-25 18:38:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 1979 states have (on average 1.3476503284487116) internal successors, (2667), 2007 states have internal predecessors, (2667), 1003 states have call successors, (1003), 160 states have call predecessors, (1003), 159 states have return successors, (1044), 995 states have call predecessors, (1044), 999 states have call successors, (1044) [2021-11-25 18:38:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4714 transitions. [2021-11-25 18:38:50,457 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4714 transitions. Word has length 411 [2021-11-25 18:38:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:50,464 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 4714 transitions. [2021-11-25 18:38:50,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-25 18:38:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4714 transitions. [2021-11-25 18:38:50,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-25 18:38:50,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:50,488 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:50,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:38:50,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:38:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash -522513415, now seen corresponding path program 1 times [2021-11-25 18:38:50,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:50,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970007699] [2021-11-25 18:38:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:50,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-25 18:38:50,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:50,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970007699] [2021-11-25 18:38:50,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970007699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:50,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:50,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:50,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582647193] [2021-11-25 18:38:50,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:50,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:50,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:50,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:50,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:50,930 INFO L87 Difference]: Start difference. First operand 3144 states and 4714 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-25 18:38:53,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:55,931 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 18:38:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:57,898 INFO L93 Difference]: Finished difference Result 9187 states and 13775 transitions. [2021-11-25 18:38:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:38:57,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2021-11-25 18:38:57,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:57,963 INFO L225 Difference]: With dead ends: 9187 [2021-11-25 18:38:57,963 INFO L226 Difference]: Without dead ends: 6122 [2021-11-25 18:38:57,982 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 18:38:57,983 INFO L933 BasicCegarLoop]: 2666 mSDtfsCounter, 2301 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 4818 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:57,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 4818 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 631 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-25 18:38:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2021-11-25 18:38:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6118. [2021-11-25 18:38:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 3882 states have (on average 1.3500772797527048) internal successors, (5241), 3930 states have internal predecessors, (5241), 1918 states have call successors, (1918), 316 states have call predecessors, (1918), 315 states have return successors, (2004), 1909 states have call predecessors, (2004), 1914 states have call successors, (2004) [2021-11-25 18:38:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 9163 transitions. [2021-11-25 18:38:58,444 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 9163 transitions. Word has length 411 [2021-11-25 18:38:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:58,447 INFO L470 AbstractCegarLoop]: Abstraction has 6118 states and 9163 transitions. [2021-11-25 18:38:58,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-25 18:38:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 9163 transitions. [2021-11-25 18:38:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-11-25 18:38:58,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:58,465 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:58,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:38:58,466 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:38:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:58,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1215184926, now seen corresponding path program 1 times [2021-11-25 18:38:58,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:58,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670290146] [2021-11-25 18:38:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:58,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-25 18:38:58,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:58,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670290146] [2021-11-25 18:38:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670290146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:58,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:58,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:58,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616437780] [2021-11-25 18:38:58,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:58,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:58,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:58,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:58,859 INFO L87 Difference]: Start difference. First operand 6118 states and 9163 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-25 18:39:01,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:05,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:05,706 INFO L93 Difference]: Finished difference Result 17880 states and 27073 transitions. [2021-11-25 18:39:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:39:05,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 418 [2021-11-25 18:39:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:05,835 INFO L225 Difference]: With dead ends: 17880 [2021-11-25 18:39:05,836 INFO L226 Difference]: Without dead ends: 11841 [2021-11-25 18:39:05,882 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 18:39:05,886 INFO L933 BasicCegarLoop]: 2699 mSDtfsCounter, 2272 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 4886 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:05,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2272 Valid, 4886 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 18:39:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11841 states. [2021-11-25 18:39:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11841 to 11808. [2021-11-25 18:39:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11808 states, 7494 states have (on average 1.3497464638377368) internal successors, (10115), 7596 states have internal predecessors, (10115), 3690 states have call successors, (3690), 626 states have call predecessors, (3690), 621 states have return successors, (4162), 3657 states have call predecessors, (4162), 3686 states have call successors, (4162) [2021-11-25 18:39:06,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11808 states to 11808 states and 17967 transitions. [2021-11-25 18:39:06,879 INFO L78 Accepts]: Start accepts. Automaton has 11808 states and 17967 transitions. Word has length 418 [2021-11-25 18:39:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:06,880 INFO L470 AbstractCegarLoop]: Abstraction has 11808 states and 17967 transitions. [2021-11-25 18:39:06,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-25 18:39:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 11808 states and 17967 transitions. [2021-11-25 18:39:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-25 18:39:06,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:06,896 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:06,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:39:06,896 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:39:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1488726530, now seen corresponding path program 1 times [2021-11-25 18:39:06,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:06,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949247871] [2021-11-25 18:39:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:06,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-25 18:39:07,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:07,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949247871] [2021-11-25 18:39:07,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949247871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:07,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:07,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:39:07,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783273635] [2021-11-25 18:39:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:07,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:39:07,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:39:07,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:39:07,276 INFO L87 Difference]: Start difference. First operand 11808 states and 17967 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-25 18:39:15,169 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 18:39:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:21,380 INFO L93 Difference]: Finished difference Result 34681 states and 52431 transitions. [2021-11-25 18:39:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:39:21,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 431 [2021-11-25 18:39:21,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:21,555 INFO L225 Difference]: With dead ends: 34681 [2021-11-25 18:39:21,555 INFO L226 Difference]: Without dead ends: 22952 [2021-11-25 18:39:21,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:39:21,625 INFO L933 BasicCegarLoop]: 3039 mSDtfsCounter, 8043 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 2716 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8254 SdHoareTripleChecker+Valid, 6591 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2716 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:21,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8254 Valid, 6591 Invalid, 5554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2716 Valid, 2837 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2021-11-25 18:39:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22952 states. [2021-11-25 18:39:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22952 to 22874. [2021-11-25 18:39:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22874 states, 14394 states have (on average 1.338265944143393) internal successors, (19263), 14614 states have internal predecessors, (19263), 7108 states have call successors, (7108), 1384 states have call predecessors, (7108), 1369 states have return successors, (8021), 7011 states have call predecessors, (8021), 7104 states have call successors, (8021) [2021-11-25 18:39:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22874 states to 22874 states and 34392 transitions. [2021-11-25 18:39:23,345 INFO L78 Accepts]: Start accepts. Automaton has 22874 states and 34392 transitions. Word has length 431 [2021-11-25 18:39:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:23,348 INFO L470 AbstractCegarLoop]: Abstraction has 22874 states and 34392 transitions. [2021-11-25 18:39:23,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-25 18:39:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 22874 states and 34392 transitions. [2021-11-25 18:39:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-25 18:39:23,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:23,495 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:23,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:39:23,496 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:39:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2041525351, now seen corresponding path program 1 times [2021-11-25 18:39:23,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:23,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41411861] [2021-11-25 18:39:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:23,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-25 18:39:23,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:23,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41411861] [2021-11-25 18:39:23,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41411861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:23,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:23,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:39:23,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813557471] [2021-11-25 18:39:23,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:23,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:39:23,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:23,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:39:23,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:39:23,988 INFO L87 Difference]: Start difference. First operand 22874 states and 34392 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-25 18:39:28,516 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 18:39:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:31,120 INFO L93 Difference]: Finished difference Result 50313 states and 75821 transitions. [2021-11-25 18:39:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:39:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 433 [2021-11-25 18:39:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:31,479 INFO L225 Difference]: With dead ends: 50313 [2021-11-25 18:39:31,480 INFO L226 Difference]: Without dead ends: 27518 [2021-11-25 18:39:31,575 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 18:39:31,583 INFO L933 BasicCegarLoop]: 3114 mSDtfsCounter, 2136 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:31,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 5243 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 765 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 18:39:31,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27518 states. [2021-11-25 18:39:33,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27518 to 27485. [2021-11-25 18:39:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27485 states, 17398 states have (on average 1.339291872629038) internal successors, (23301), 17682 states have internal predecessors, (23301), 8554 states have call successors, (8554), 1551 states have call predecessors, (8554), 1530 states have return successors, (9287), 8399 states have call predecessors, (9287), 8550 states have call successors, (9287) [2021-11-25 18:39:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27485 states to 27485 states and 41142 transitions. [2021-11-25 18:39:33,624 INFO L78 Accepts]: Start accepts. Automaton has 27485 states and 41142 transitions. Word has length 433 [2021-11-25 18:39:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:33,798 INFO L470 AbstractCegarLoop]: Abstraction has 27485 states and 41142 transitions. [2021-11-25 18:39:33,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-25 18:39:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 27485 states and 41142 transitions. [2021-11-25 18:39:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-25 18:39:33,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:33,826 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 4, 4, 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] [2021-11-25 18:39:33,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:39:33,826 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:39:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1830707001, now seen corresponding path program 1 times [2021-11-25 18:39:33,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:33,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67208680] [2021-11-25 18:39:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:33,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6279 trivial. 0 not checked. [2021-11-25 18:39:34,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:34,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67208680] [2021-11-25 18:39:34,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67208680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:34,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:34,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:39:34,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281577782] [2021-11-25 18:39:34,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:34,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:39:34,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:34,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:39:34,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:39:34,411 INFO L87 Difference]: Start difference. First operand 27485 states and 41142 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 18:39:39,341 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 18:39:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:41,674 INFO L93 Difference]: Finished difference Result 27491 states and 41147 transitions. [2021-11-25 18:39:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:39:41,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 453 [2021-11-25 18:39:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:41,834 INFO L225 Difference]: With dead ends: 27491 [2021-11-25 18:39:41,835 INFO L226 Difference]: Without dead ends: 27489 [2021-11-25 18:39:41,848 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 18:39:41,849 INFO L933 BasicCegarLoop]: 2182 mSDtfsCounter, 2385 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:41,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2396 Valid, 6533 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 18:39:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27489 states. [2021-11-25 18:39:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27489 to 27489. [2021-11-25 18:39:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27489 states, 17401 states have (on average 1.339233377392104) internal successors, (23304), 17685 states have internal predecessors, (23304), 8554 states have call successors, (8554), 1552 states have call predecessors, (8554), 1531 states have return successors, (9287), 8399 states have call predecessors, (9287), 8550 states have call successors, (9287) [2021-11-25 18:39:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27489 states to 27489 states and 41145 transitions. [2021-11-25 18:39:43,595 INFO L78 Accepts]: Start accepts. Automaton has 27489 states and 41145 transitions. Word has length 453 [2021-11-25 18:39:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:43,597 INFO L470 AbstractCegarLoop]: Abstraction has 27489 states and 41145 transitions. [2021-11-25 18:39:43,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 18:39:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 27489 states and 41145 transitions. [2021-11-25 18:39:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-25 18:39:43,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:43,613 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:43,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:39:43,614 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:39:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1800351711, now seen corresponding path program 1 times [2021-11-25 18:39:43,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:43,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057220046] [2021-11-25 18:39:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:43,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6281 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6279 trivial. 0 not checked. [2021-11-25 18:39:44,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:44,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057220046] [2021-11-25 18:39:44,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057220046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:44,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:44,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:39:44,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308079311] [2021-11-25 18:39:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:44,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:39:44,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:44,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:39:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:39:44,195 INFO L87 Difference]: Start difference. First operand 27489 states and 41145 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 18:39:48,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:50,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:39:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:53,530 INFO L93 Difference]: Finished difference Result 27495 states and 41150 transitions. [2021-11-25 18:39:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:39:53,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 458 [2021-11-25 18:39:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:53,694 INFO L225 Difference]: With dead ends: 27495 [2021-11-25 18:39:53,694 INFO L226 Difference]: Without dead ends: 27493 [2021-11-25 18:39:53,710 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 18:39:53,712 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2380 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:53,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2390 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-25 18:39:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27493 states. [2021-11-25 18:39:55,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27493 to 27493. [2021-11-25 18:39:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27493 states, 17404 states have (on average 1.3391749023213055) internal successors, (23307), 17688 states have internal predecessors, (23307), 8554 states have call successors, (8554), 1553 states have call predecessors, (8554), 1532 states have return successors, (9287), 8399 states have call predecessors, (9287), 8550 states have call successors, (9287) [2021-11-25 18:39:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27493 states to 27493 states and 41148 transitions. [2021-11-25 18:39:55,527 INFO L78 Accepts]: Start accepts. Automaton has 27493 states and 41148 transitions. Word has length 458 [2021-11-25 18:39:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:55,528 INFO L470 AbstractCegarLoop]: Abstraction has 27493 states and 41148 transitions. [2021-11-25 18:39:55,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 18:39:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 27493 states and 41148 transitions. [2021-11-25 18:39:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-11-25 18:39:55,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:55,561 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 5, 3, 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] [2021-11-25 18:39:55,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:39:55,561 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:39:55,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash -107682790, now seen corresponding path program 1 times [2021-11-25 18:39:55,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:39:55,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042739878] [2021-11-25 18:39:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:55,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:39:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6294 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6290 trivial. 0 not checked. [2021-11-25 18:39:56,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:39:56,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042739878] [2021-11-25 18:39:56,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042739878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:56,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:56,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:39:56,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727168842] [2021-11-25 18:39:56,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:56,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:39:56,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:56,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:39:56,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:39:56,015 INFO L87 Difference]: Start difference. First operand 27493 states and 41148 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-25 18:39:59,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:01,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:02,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:04,964 INFO L93 Difference]: Finished difference Result 27499 states and 41153 transitions. [2021-11-25 18:40:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:40:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 466 [2021-11-25 18:40:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:05,059 INFO L225 Difference]: With dead ends: 27499 [2021-11-25 18:40:05,060 INFO L226 Difference]: Without dead ends: 27497 [2021-11-25 18:40:05,071 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 18:40:05,072 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:05,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 18:40:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27497 states. [2021-11-25 18:40:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27497 to 27497. [2021-11-25 18:40:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27497 states, 17407 states have (on average 1.3391164474062158) internal successors, (23310), 17691 states have internal predecessors, (23310), 8554 states have call successors, (8554), 1554 states have call predecessors, (8554), 1533 states have return successors, (9287), 8399 states have call predecessors, (9287), 8550 states have call successors, (9287) [2021-11-25 18:40:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27497 states to 27497 states and 41151 transitions. [2021-11-25 18:40:06,788 INFO L78 Accepts]: Start accepts. Automaton has 27497 states and 41151 transitions. Word has length 466 [2021-11-25 18:40:06,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:06,790 INFO L470 AbstractCegarLoop]: Abstraction has 27497 states and 41151 transitions. [2021-11-25 18:40:06,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-25 18:40:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27497 states and 41151 transitions. [2021-11-25 18:40:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-11-25 18:40:06,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:06,802 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 5, 4, 3, 3, 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] [2021-11-25 18:40:06,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:40:06,803 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:40:06,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash -402302974, now seen corresponding path program 1 times [2021-11-25 18:40:06,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:06,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585021489] [2021-11-25 18:40:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:06,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6299 trivial. 0 not checked. [2021-11-25 18:40:07,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:07,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585021489] [2021-11-25 18:40:07,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585021489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:07,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:07,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:40:07,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38239823] [2021-11-25 18:40:07,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:07,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:40:07,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:07,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:40:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:40:07,236 INFO L87 Difference]: Start difference. First operand 27497 states and 41151 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-25 18:40:10,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:12,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:13,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:17,050 INFO L93 Difference]: Finished difference Result 27503 states and 41156 transitions. [2021-11-25 18:40:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:40:17,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 472 [2021-11-25 18:40:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:17,163 INFO L225 Difference]: With dead ends: 27503 [2021-11-25 18:40:17,163 INFO L226 Difference]: Without dead ends: 27501 [2021-11-25 18:40:17,177 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 18:40:17,178 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:17,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2387 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-11-25 18:40:17,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27501 states. [2021-11-25 18:40:18,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27501 to 27501. [2021-11-25 18:40:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27501 states, 17410 states have (on average 1.3390580126364158) internal successors, (23313), 17694 states have internal predecessors, (23313), 8554 states have call successors, (8554), 1555 states have call predecessors, (8554), 1534 states have return successors, (9287), 8399 states have call predecessors, (9287), 8550 states have call successors, (9287) [2021-11-25 18:40:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27501 states to 27501 states and 41154 transitions. [2021-11-25 18:40:18,673 INFO L78 Accepts]: Start accepts. Automaton has 27501 states and 41154 transitions. Word has length 472 [2021-11-25 18:40:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:18,675 INFO L470 AbstractCegarLoop]: Abstraction has 27501 states and 41154 transitions. [2021-11-25 18:40:18,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-25 18:40:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 27501 states and 41154 transitions. [2021-11-25 18:40:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-11-25 18:40:18,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:18,688 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 5, 5, 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] [2021-11-25 18:40:18,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:40:18,689 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:40:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:18,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2146110660, now seen corresponding path program 1 times [2021-11-25 18:40:18,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:18,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331209818] [2021-11-25 18:40:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:18,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6319 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6311 trivial. 0 not checked. [2021-11-25 18:40:19,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:19,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331209818] [2021-11-25 18:40:19,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331209818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:19,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:19,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:40:19,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154907778] [2021-11-25 18:40:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:19,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:40:19,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:40:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:40:19,358 INFO L87 Difference]: Start difference. First operand 27501 states and 41154 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-25 18:40:22,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:23,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:25,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:29,727 INFO L93 Difference]: Finished difference Result 27507 states and 41159 transitions. [2021-11-25 18:40:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:40:29,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 477 [2021-11-25 18:40:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:29,832 INFO L225 Difference]: With dead ends: 27507 [2021-11-25 18:40:29,832 INFO L226 Difference]: Without dead ends: 27505 [2021-11-25 18:40:29,843 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 18:40:29,844 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:29,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2386 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 18:40:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27505 states. [2021-11-25 18:40:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27505 to 27505. [2021-11-25 18:40:31,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27505 states, 17413 states have (on average 1.338999598001493) internal successors, (23316), 17697 states have internal predecessors, (23316), 8554 states have call successors, (8554), 1556 states have call predecessors, (8554), 1535 states have return successors, (9287), 8399 states have call predecessors, (9287), 8550 states have call successors, (9287) [2021-11-25 18:40:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27505 states to 27505 states and 41157 transitions. [2021-11-25 18:40:31,317 INFO L78 Accepts]: Start accepts. Automaton has 27505 states and 41157 transitions. Word has length 477 [2021-11-25 18:40:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:31,319 INFO L470 AbstractCegarLoop]: Abstraction has 27505 states and 41157 transitions. [2021-11-25 18:40:31,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-25 18:40:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 27505 states and 41157 transitions. [2021-11-25 18:40:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-11-25 18:40:31,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:31,334 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 6, 5, 5, 5, 5, 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] [2021-11-25 18:40:31,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:40:31,335 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:40:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2103502590, now seen corresponding path program 1 times [2021-11-25 18:40:31,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:31,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677076462] [2021-11-25 18:40:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:31,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6337 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6327 trivial. 0 not checked. [2021-11-25 18:40:31,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:31,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677076462] [2021-11-25 18:40:31,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677076462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:31,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:31,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:40:31,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435133167] [2021-11-25 18:40:31,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:31,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:40:31,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:31,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:40:31,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:40:31,770 INFO L87 Difference]: Start difference. First operand 27505 states and 41157 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-25 18:40:34,937 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 18:40:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:39,203 INFO L93 Difference]: Finished difference Result 31063 states and 45896 transitions. [2021-11-25 18:40:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:40:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 482 [2021-11-25 18:40:39,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:39,345 INFO L225 Difference]: With dead ends: 31063 [2021-11-25 18:40:39,345 INFO L226 Difference]: Without dead ends: 31061 [2021-11-25 18:40:39,359 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 18:40:39,360 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2000 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:39,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 18:40:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31061 states. [2021-11-25 18:40:41,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31061 to 31057. [2021-11-25 18:40:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31057 states, 19440 states have (on average 1.3262860082304526) internal successors, (25783), 19764 states have internal predecessors, (25783), 9674 states have call successors, (9674), 1961 states have call predecessors, (9674), 1940 states have return successors, (10435), 9511 states have call predecessors, (10435), 9670 states have call successors, (10435) [2021-11-25 18:40:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31057 states to 31057 states and 45892 transitions. [2021-11-25 18:40:41,151 INFO L78 Accepts]: Start accepts. Automaton has 31057 states and 45892 transitions. Word has length 482 [2021-11-25 18:40:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:41,152 INFO L470 AbstractCegarLoop]: Abstraction has 31057 states and 45892 transitions. [2021-11-25 18:40:41,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-25 18:40:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 31057 states and 45892 transitions. [2021-11-25 18:40:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2021-11-25 18:40:41,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:41,167 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 7, 6, 6, 5, 5, 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] [2021-11-25 18:40:41,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:40:41,168 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:40:41,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash -193193148, now seen corresponding path program 1 times [2021-11-25 18:40:41,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:41,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990460849] [2021-11-25 18:40:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:41,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6359 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6347 trivial. 0 not checked. [2021-11-25 18:40:41,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:41,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990460849] [2021-11-25 18:40:41,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990460849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:41,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:41,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:40:41,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709921289] [2021-11-25 18:40:41,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:41,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:40:41,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:40:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:40:41,580 INFO L87 Difference]: Start difference. First operand 31057 states and 45892 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:40:44,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:46,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:48,090 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 18:40:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:51,409 INFO L93 Difference]: Finished difference Result 31063 states and 45897 transitions. [2021-11-25 18:40:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:40:51,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 487 [2021-11-25 18:40:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:51,530 INFO L225 Difference]: With dead ends: 31063 [2021-11-25 18:40:51,530 INFO L226 Difference]: Without dead ends: 31061 [2021-11-25 18:40:51,547 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 18:40:51,548 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:51,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-25 18:40:51,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31061 states. [2021-11-25 18:40:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31061 to 31061. [2021-11-25 18:40:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31061 states, 19443 states have (on average 1.3262356632206964) internal successors, (25786), 19767 states have internal predecessors, (25786), 9674 states have call successors, (9674), 1962 states have call predecessors, (9674), 1941 states have return successors, (10435), 9511 states have call predecessors, (10435), 9670 states have call successors, (10435) [2021-11-25 18:40:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31061 states to 31061 states and 45895 transitions. [2021-11-25 18:40:53,329 INFO L78 Accepts]: Start accepts. Automaton has 31061 states and 45895 transitions. Word has length 487 [2021-11-25 18:40:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:53,330 INFO L470 AbstractCegarLoop]: Abstraction has 31061 states and 45895 transitions. [2021-11-25 18:40:53,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:40:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 31061 states and 45895 transitions. [2021-11-25 18:40:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2021-11-25 18:40:53,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:53,346 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 8, 7, 7, 4, 4, 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] [2021-11-25 18:40:53,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:40:53,347 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:40:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash -431009249, now seen corresponding path program 1 times [2021-11-25 18:40:53,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:53,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898661023] [2021-11-25 18:40:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:53,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6377 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6363 trivial. 0 not checked. [2021-11-25 18:40:54,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:40:54,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898661023] [2021-11-25 18:40:54,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898661023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:54,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:54,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:40:54,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804554029] [2021-11-25 18:40:54,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:54,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:40:54,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:40:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:40:54,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:40:54,073 INFO L87 Difference]: Start difference. First operand 31061 states and 45895 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-25 18:40:57,164 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 18:41:01,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:01,645 INFO L93 Difference]: Finished difference Result 31071 states and 45902 transitions. [2021-11-25 18:41:01,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:01,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 488 [2021-11-25 18:41:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:01,767 INFO L225 Difference]: With dead ends: 31071 [2021-11-25 18:41:01,767 INFO L226 Difference]: Without dead ends: 31069 [2021-11-25 18:41:01,781 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 18:41:01,781 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2001 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:01,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 18:41:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31069 states. [2021-11-25 18:41:03,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31069 to 31065. [2021-11-25 18:41:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31065 states, 19446 states have (on average 1.326185333744729) internal successors, (25789), 19770 states have internal predecessors, (25789), 9674 states have call successors, (9674), 1963 states have call predecessors, (9674), 1942 states have return successors, (10435), 9511 states have call predecessors, (10435), 9670 states have call successors, (10435) [2021-11-25 18:41:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31065 states to 31065 states and 45898 transitions. [2021-11-25 18:41:03,780 INFO L78 Accepts]: Start accepts. Automaton has 31065 states and 45898 transitions. Word has length 488 [2021-11-25 18:41:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:03,781 INFO L470 AbstractCegarLoop]: Abstraction has 31065 states and 45898 transitions. [2021-11-25 18:41:03,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-25 18:41:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 31065 states and 45898 transitions. [2021-11-25 18:41:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-11-25 18:41:03,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:03,802 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 9, 8, 8, 4, 4, 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] [2021-11-25 18:41:03,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:41:03,803 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash -725730361, now seen corresponding path program 1 times [2021-11-25 18:41:03,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:03,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782642020] [2021-11-25 18:41:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:03,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6407 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6391 trivial. 0 not checked. [2021-11-25 18:41:04,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:04,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782642020] [2021-11-25 18:41:04,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782642020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:04,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:04,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:41:04,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847242615] [2021-11-25 18:41:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:04,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:41:04,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:41:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:41:04,296 INFO L87 Difference]: Start difference. First operand 31065 states and 45898 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:41:07,423 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 18:41:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:11,620 INFO L93 Difference]: Finished difference Result 31075 states and 45905 transitions. [2021-11-25 18:41:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 493 [2021-11-25 18:41:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:11,734 INFO L225 Difference]: With dead ends: 31075 [2021-11-25 18:41:11,734 INFO L226 Difference]: Without dead ends: 31073 [2021-11-25 18:41:11,868 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 18:41:11,869 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2001 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:11,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2006 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-25 18:41:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31073 states. [2021-11-25 18:41:13,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31073 to 31069. [2021-11-25 18:41:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31069 states, 19449 states have (on average 1.3261350197953623) internal successors, (25792), 19773 states have internal predecessors, (25792), 9674 states have call successors, (9674), 1964 states have call predecessors, (9674), 1943 states have return successors, (10435), 9511 states have call predecessors, (10435), 9670 states have call successors, (10435) [2021-11-25 18:41:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31069 states to 31069 states and 45901 transitions. [2021-11-25 18:41:13,909 INFO L78 Accepts]: Start accepts. Automaton has 31069 states and 45901 transitions. Word has length 493 [2021-11-25 18:41:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:13,911 INFO L470 AbstractCegarLoop]: Abstraction has 31069 states and 45901 transitions. [2021-11-25 18:41:13,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:41:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 31069 states and 45901 transitions. [2021-11-25 18:41:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-11-25 18:41:13,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:13,930 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 10, 9, 9, 4, 4, 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] [2021-11-25 18:41:13,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:41:13,931 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:13,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1929655007, now seen corresponding path program 1 times [2021-11-25 18:41:13,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:13,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309236692] [2021-11-25 18:41:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:13,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6423 trivial. 0 not checked. [2021-11-25 18:41:14,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:14,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309236692] [2021-11-25 18:41:14,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309236692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:14,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:14,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:41:14,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56230259] [2021-11-25 18:41:14,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:14,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:41:14,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:41:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:41:14,351 INFO L87 Difference]: Start difference. First operand 31069 states and 45901 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-25 18:41:17,763 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 18:41:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:22,211 INFO L93 Difference]: Finished difference Result 31079 states and 45908 transitions. [2021-11-25 18:41:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:22,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 498 [2021-11-25 18:41:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:22,344 INFO L225 Difference]: With dead ends: 31079 [2021-11-25 18:41:22,345 INFO L226 Difference]: Without dead ends: 31077 [2021-11-25 18:41:22,361 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 18:41:22,362 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2001 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:22,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 18:41:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31077 states. [2021-11-25 18:41:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31077 to 31073. [2021-11-25 18:41:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31073 states, 19452 states have (on average 1.3260847213654123) internal successors, (25795), 19776 states have internal predecessors, (25795), 9674 states have call successors, (9674), 1965 states have call predecessors, (9674), 1944 states have return successors, (10435), 9511 states have call predecessors, (10435), 9670 states have call successors, (10435) [2021-11-25 18:41:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31073 states to 31073 states and 45904 transitions. [2021-11-25 18:41:24,373 INFO L78 Accepts]: Start accepts. Automaton has 31073 states and 45904 transitions. Word has length 498 [2021-11-25 18:41:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:24,374 INFO L470 AbstractCegarLoop]: Abstraction has 31073 states and 45904 transitions. [2021-11-25 18:41:24,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-25 18:41:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 31073 states and 45904 transitions. [2021-11-25 18:41:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-25 18:41:24,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:24,390 INFO L514 BasicCegarLoop]: trace histogram [45, 39, 39, 39, 39, 39, 39, 5, 5, 3, 3, 3, 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] [2021-11-25 18:41:24,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:41:24,390 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1505762393, now seen corresponding path program 1 times [2021-11-25 18:41:24,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:24,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866317401] [2021-11-25 18:41:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:24,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6470 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6456 trivial. 0 not checked. [2021-11-25 18:41:25,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:25,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866317401] [2021-11-25 18:41:25,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866317401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:25,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:25,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:41:25,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152095136] [2021-11-25 18:41:25,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:25,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:41:25,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:25,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:41:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:41:25,072 INFO L87 Difference]: Start difference. First operand 31073 states and 45904 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-25 18:41:28,297 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 18:41:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:32,659 INFO L93 Difference]: Finished difference Result 69546 states and 102910 transitions. [2021-11-25 18:41:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:41:32,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 500 [2021-11-25 18:41:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:32,806 INFO L225 Difference]: With dead ends: 69546 [2021-11-25 18:41:32,806 INFO L226 Difference]: Without dead ends: 38976 [2021-11-25 18:41:32,967 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 18:41:32,968 INFO L933 BasicCegarLoop]: 3795 mSDtfsCounter, 1909 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 5954 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:32,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 5954 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 902 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-25 18:41:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38976 states. [2021-11-25 18:41:35,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38976 to 38893. [2021-11-25 18:41:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38893 states, 24427 states have (on average 1.3287345969623776) internal successors, (32457), 24830 states have internal predecessors, (32457), 12080 states have call successors, (12080), 2414 states have call predecessors, (12080), 2383 states have return successors, (13065), 11866 states have call predecessors, (13065), 12076 states have call successors, (13065) [2021-11-25 18:41:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38893 states to 38893 states and 57602 transitions. [2021-11-25 18:41:35,589 INFO L78 Accepts]: Start accepts. Automaton has 38893 states and 57602 transitions. Word has length 500 [2021-11-25 18:41:35,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:35,590 INFO L470 AbstractCegarLoop]: Abstraction has 38893 states and 57602 transitions. [2021-11-25 18:41:35,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-25 18:41:35,590 INFO L276 IsEmpty]: Start isEmpty. Operand 38893 states and 57602 transitions. [2021-11-25 18:41:35,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-11-25 18:41:35,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:35,599 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 11, 10, 10, 5, 5, 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] [2021-11-25 18:41:35,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:41:35,599 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:35,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1866412058, now seen corresponding path program 1 times [2021-11-25 18:41:35,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:35,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783325658] [2021-11-25 18:41:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:35,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6466 trivial. 0 not checked. [2021-11-25 18:41:35,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:35,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783325658] [2021-11-25 18:41:35,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783325658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:35,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:35,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:41:35,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722223691] [2021-11-25 18:41:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:35,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:41:35,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:41:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:41:35,981 INFO L87 Difference]: Start difference. First operand 38893 states and 57602 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 18:41:38,326 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 18:41:39,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:40,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:45,157 INFO L93 Difference]: Finished difference Result 40166 states and 58840 transitions. [2021-11-25 18:41:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 506 [2021-11-25 18:41:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:45,293 INFO L225 Difference]: With dead ends: 40166 [2021-11-25 18:41:45,293 INFO L226 Difference]: Without dead ends: 40162 [2021-11-25 18:41:45,309 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 18:41:45,310 INFO L933 BasicCegarLoop]: 2218 mSDtfsCounter, 2196 mSDsluCounter, 5315 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 6862 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:45,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2197 Valid, 6862 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 18:41:45,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40162 states. [2021-11-25 18:41:47,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40162 to 40162. [2021-11-25 18:41:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40162 states, 25118 states have (on average 1.3232343339437853) internal successors, (33237), 25520 states have internal predecessors, (33237), 12307 states have call successors, (12307), 2766 states have call predecessors, (12307), 2734 states have return successors, (13292), 12093 states have call predecessors, (13292), 12303 states have call successors, (13292) [2021-11-25 18:41:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40162 states to 40162 states and 58836 transitions. [2021-11-25 18:41:48,122 INFO L78 Accepts]: Start accepts. Automaton has 40162 states and 58836 transitions. Word has length 506 [2021-11-25 18:41:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:48,124 INFO L470 AbstractCegarLoop]: Abstraction has 40162 states and 58836 transitions. [2021-11-25 18:41:48,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 18:41:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 40162 states and 58836 transitions. [2021-11-25 18:41:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2021-11-25 18:41:48,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:48,142 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 12, 11, 11, 4, 4, 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] [2021-11-25 18:41:48,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:41:48,145 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:48,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1726426209, now seen corresponding path program 1 times [2021-11-25 18:41:48,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:48,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519919093] [2021-11-25 18:41:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:48,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6521 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6499 trivial. 0 not checked. [2021-11-25 18:41:48,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:48,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519919093] [2021-11-25 18:41:48,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519919093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:48,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:48,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:41:48,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474616057] [2021-11-25 18:41:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:48,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:41:48,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:41:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:41:48,615 INFO L87 Difference]: Start difference. First operand 40162 states and 58836 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 18:41:51,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:56,442 WARN L534 Checker$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 18:41:57,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:58,917 INFO L93 Difference]: Finished difference Result 40162 states and 58836 transitions. [2021-11-25 18:41:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:58,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 508 [2021-11-25 18:41:58,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:59,054 INFO L225 Difference]: With dead ends: 40162 [2021-11-25 18:41:59,054 INFO L226 Difference]: Without dead ends: 39859 [2021-11-25 18:41:59,070 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 18:41:59,071 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 2376 mSDsluCounter, 4964 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:59,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2376 Valid, 6533 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 18:41:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39859 states. [2021-11-25 18:42:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39859 to 39859. [2021-11-25 18:42:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39859 states, 25042 states have (on average 1.3203817586454756) internal successors, (33065), 25348 states have internal predecessors, (33065), 12100 states have call successors, (12100), 2721 states have call predecessors, (12100), 2715 states have return successors, (13089), 12007 states have call predecessors, (13089), 12100 states have call successors, (13089)