./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW --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 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:26:16,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:26:16,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:26:16,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:26:16,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:26:16,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:26:16,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:26:16,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:26:16,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:26:16,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:26:16,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:26:16,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:26:16,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:26:16,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:26:16,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:26:16,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:26:16,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:26:16,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:26:16,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:26:16,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:26:16,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:26:16,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:26:16,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:26:16,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:26:16,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:26:16,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:26:16,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:26:16,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:26:16,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:26:16,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:26:16,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:26:16,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:26:16,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:26:16,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:26:16,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:26:16,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:26:16,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:26:16,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:26:16,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:26:16,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:26:16,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:26:16,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:26:16,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:26:16,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:26:16,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:26:16,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:26:16,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:26:16,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:26:16,677 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:26:16,677 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:26:16,678 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:26:16,678 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:26:16,678 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:26:16,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:26:16,679 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:26:16,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:26:16,679 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:26:16,679 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:26:16,680 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:26:16,680 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:26:16,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:26:16,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:26:16,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:26:16,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:26:16,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:26:16,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:26:16,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:26:16,686 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:26:16,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:26:16,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:26:16,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:26:16,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:26:16,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:26:16,688 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:26:16,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:26:16,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:26:16,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:26:16,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:26:16,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:26:16,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:26:16,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 [2022-11-23 14:26:16,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:26:16,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:26:16,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:26:16,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:26:16,997 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:26:16,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-23 14:26:20,076 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:26:20,774 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:26:20,776 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-23 14:26:20,831 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/data/a00de651f/5f68f038738f4889923cf7308fb81eeb/FLAG165ba61e9 [2022-11-23 14:26:20,849 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/data/a00de651f/5f68f038738f4889923cf7308fb81eeb [2022-11-23 14:26:20,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:26:20,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:26:20,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:26:20,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:26:20,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:26:20,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:20" (1/1) ... [2022-11-23 14:26:20,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8eddc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:20, skipping insertion in model container [2022-11-23 14:26:20,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:20" (1/1) ... [2022-11-23 14:26:20,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:26:21,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:26:24,034 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2022-11-23 14:26:24,040 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2022-11-23 14:26:24,040 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2022-11-23 14:26:24,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2022-11-23 14:26:24,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:24,109 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:26:24,571 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2022-11-23 14:26:24,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2022-11-23 14:26:24,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2022-11-23 14:26:24,573 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2022-11-23 14:26:24,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:24,754 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:26:24,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24 WrapperNode [2022-11-23 14:26:24,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:26:24,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:26:24,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:26:24,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:26:24,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:24,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,111 INFO L138 Inliner]: procedures = 411, calls = 2809, calls flagged for inlining = 214, calls inlined = 198, statements flattened = 6107 [2022-11-23 14:26:25,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:26:25,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:26:25,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:26:25,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:26:25,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:26:25,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:26:25,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:26:25,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:26:25,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (1/1) ... [2022-11-23 14:26:25,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:26:25,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:25,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:26:25,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:26:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_set_bssid [2022-11-23 14:26:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_set_bssid [2022-11-23 14:26:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_start [2022-11-23 14:26:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_start [2022-11-23 14:26:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 14:26:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 14:26:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:26:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:26:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:26:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:26:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 14:26:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 14:26:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 14:26:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 14:26:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-23 14:26:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-23 14:26:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 14:26:25,891 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 14:26:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_al2210l [2022-11-23 14:26:25,892 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_al2210l [2022-11-23 14:26:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:26:25,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:26:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-23 14:26:25,893 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-23 14:26:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:26:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:26:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_adm8211_priv [2022-11-23 14:26:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_adm8211_priv [2022-11-23 14:26:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 14:26:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 14:26:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:26:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:26:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:26:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_set_channel [2022-11-23 14:26:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_set_channel [2022-11-23 14:26:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:26:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 14:26:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 14:26:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:26:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:26:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:26:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_sram [2022-11-23 14:26:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_sram [2022-11-23 14:26:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:26:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 14:26:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 14:26:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:26:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:26:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 14:26:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 14:26:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 14:26:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 14:26:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-23 14:26:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-23 14:26:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 14:26:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 14:26:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 14:26:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 14:26:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 14:26:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 14:26:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:26:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 14:26:25,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 14:26:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 14:26:25,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 14:26:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:26:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-23 14:26:25,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-23 14:26:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_max2820 [2022-11-23 14:26:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_max2820 [2022-11-23 14:26:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:26:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:26:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_bbp [2022-11-23 14:26:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_bbp [2022-11-23 14:26:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:26:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:26:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:26:25,899 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:26:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:26:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 14:26:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 14:26:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:26:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:26:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 14:26:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 14:26:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_stop [2022-11-23 14:26:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_stop [2022-11-23 14:26:25,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-23 14:26:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-23 14:26:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:26:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:26:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 14:26:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 14:26:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:26:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:26:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:26:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:26:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-23 14:26:25,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-23 14:26:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 14:26:25,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 14:26:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2022-11-23 14:26:25,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2022-11-23 14:26:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-23 14:26:25,902 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-23 14:26:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 14:26:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 14:26:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:26:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:26:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 14:26:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 14:26:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:26:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:26:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_resume [2022-11-23 14:26:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_resume [2022-11-23 14:26:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:26:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:26:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:26:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_adm8211_priv [2022-11-23 14:26:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_adm8211_priv [2022-11-23 14:26:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_remove [2022-11-23 14:26:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_remove [2022-11-23 14:26:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_update_mode [2022-11-23 14:26:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_update_mode [2022-11-23 14:26:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:26:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:26:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:26:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-23 14:26:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-23 14:26:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-23 14:26:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-23 14:26:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:26:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:26:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2958 [2022-11-23 14:26:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2958 [2022-11-23 14:26:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2948 [2022-11-23 14:26:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2948 [2022-11-23 14:26:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-23 14:26:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-23 14:26:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:26:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:26:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 14:26:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 14:26:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 14:26:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 14:26:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:26:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:26:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:26:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-23 14:26:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-23 14:26:26,889 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:26:26,892 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:26:28,232 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:26:37,091 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:26:37,290 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:26:39,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:26:39,309 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:26:39,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:39 BoogieIcfgContainer [2022-11-23 14:26:39,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:26:39,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:26:39,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:26:39,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:26:39,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:20" (1/3) ... [2022-11-23 14:26:39,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f657fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:39, skipping insertion in model container [2022-11-23 14:26:39,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:24" (2/3) ... [2022-11-23 14:26:39,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f657fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:39, skipping insertion in model container [2022-11-23 14:26:39,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:39" (3/3) ... [2022-11-23 14:26:39,324 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-23 14:26:39,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:26:39,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 14:26:39,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:26:39,465 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@415c3548, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:26:39,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 14:26:39,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 1579 states, 904 states have (on average 1.2444690265486726) internal successors, (1125), 926 states have internal predecessors, (1125), 606 states have call successors, (606), 67 states have call predecessors, (606), 66 states have return successors, (601), 595 states have call predecessors, (601), 601 states have call successors, (601) [2022-11-23 14:26:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 14:26:39,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:39,507 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:39,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:26:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash 523608734, now seen corresponding path program 1 times [2022-11-23 14:26:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:39,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748270442] [2022-11-23 14:26:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:39,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-23 14:26:40,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:40,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748270442] [2022-11-23 14:26:40,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748270442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:40,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:40,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:26:40,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850520592] [2022-11-23 14:26:40,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:40,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:40,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:40,490 INFO L87 Difference]: Start difference. First operand has 1579 states, 904 states have (on average 1.2444690265486726) internal successors, (1125), 926 states have internal predecessors, (1125), 606 states have call successors, (606), 67 states have call predecessors, (606), 66 states have return successors, (601), 595 states have call predecessors, (601), 601 states have call successors, (601) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 14:26:42,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:44,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:46,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:50,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:26:51,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:53,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:26:55,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:26:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:55,494 INFO L93 Difference]: Finished difference Result 4518 states and 6700 transitions. [2022-11-23 14:26:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2022-11-23 14:26:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:55,535 INFO L225 Difference]: With dead ends: 4518 [2022-11-23 14:26:55,536 INFO L226 Difference]: Without dead ends: 2950 [2022-11-23 14:26:55,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:55,555 INFO L413 NwaCegarLoop]: 2747 mSDtfsCounter, 2051 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 4797 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:55,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 4797 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 532 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2022-11-23 14:26:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-11-23 14:26:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2944. [2022-11-23 14:26:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 1701 states have (on average 1.2404467960023515) internal successors, (2110), 1740 states have internal predecessors, (2110), 1113 states have call successors, (1113), 128 states have call predecessors, (1113), 127 states have return successors, (1110), 1099 states have call predecessors, (1110), 1110 states have call successors, (1110) [2022-11-23 14:26:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 4333 transitions. [2022-11-23 14:26:55,994 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 4333 transitions. Word has length 117 [2022-11-23 14:26:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:55,995 INFO L495 AbstractCegarLoop]: Abstraction has 2944 states and 4333 transitions. [2022-11-23 14:26:55,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 14:26:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 4333 transitions. [2022-11-23 14:26:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 14:26:56,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:56,003 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:56,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:26:56,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:26:56,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash -476893097, now seen corresponding path program 1 times [2022-11-23 14:26:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:56,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872354291] [2022-11-23 14:26:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-23 14:26:56,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:56,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872354291] [2022-11-23 14:26:56,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872354291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:56,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:56,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:26:56,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649969891] [2022-11-23 14:26:56,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:56,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:56,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:56,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:56,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:56,487 INFO L87 Difference]: Start difference. First operand 2944 states and 4333 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 14:26:58,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:00,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:02,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:27:05,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:08,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:09,435 INFO L93 Difference]: Finished difference Result 8198 states and 12065 transitions. [2022-11-23 14:27:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:27:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2022-11-23 14:27:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:09,483 INFO L225 Difference]: With dead ends: 8198 [2022-11-23 14:27:09,484 INFO L226 Difference]: Without dead ends: 5275 [2022-11-23 14:27:09,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:27:09,510 INFO L413 NwaCegarLoop]: 2647 mSDtfsCounter, 1760 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:09,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 4679 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 502 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2022-11-23 14:27:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2022-11-23 14:27:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 5246. [2022-11-23 14:27:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 3012 states have (on average 1.2347277556440903) internal successors, (3719), 3089 states have internal predecessors, (3719), 1996 states have call successors, (1996), 238 states have call predecessors, (1996), 235 states have return successors, (2003), 1962 states have call predecessors, (2003), 1993 states have call successors, (2003) [2022-11-23 14:27:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 7718 transitions. [2022-11-23 14:27:10,047 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 7718 transitions. Word has length 128 [2022-11-23 14:27:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:10,048 INFO L495 AbstractCegarLoop]: Abstraction has 5246 states and 7718 transitions. [2022-11-23 14:27:10,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 14:27:10,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 7718 transitions. [2022-11-23 14:27:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-23 14:27:10,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:10,061 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 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] [2022-11-23 14:27:10,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:27:10,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:27:10,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1144079478, now seen corresponding path program 1 times [2022-11-23 14:27:10,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:10,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799829420] [2022-11-23 14:27:10,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-23 14:27:10,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:10,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799829420] [2022-11-23 14:27:10,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799829420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:10,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:10,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:10,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474478584] [2022-11-23 14:27:10,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:10,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:27:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:27:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:10,842 INFO L87 Difference]: Start difference. First operand 5246 states and 7718 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 14:27:13,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:18,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:27:20,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:27:23,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:25,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:27,246 INFO L93 Difference]: Finished difference Result 10213 states and 14994 transitions. [2022-11-23 14:27:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:27:27,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-11-23 14:27:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:27,336 INFO L225 Difference]: With dead ends: 10213 [2022-11-23 14:27:27,336 INFO L226 Difference]: Without dead ends: 10211 [2022-11-23 14:27:27,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:27,352 INFO L413 NwaCegarLoop]: 2804 mSDtfsCounter, 1960 mSDsluCounter, 7626 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 10430 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:27,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 10430 Invalid, 1154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1147 Invalid, 5 Unknown, 0 Unchecked, 15.9s Time] [2022-11-23 14:27:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2022-11-23 14:27:28,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 10201. [2022-11-23 14:27:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10201 states, 5841 states have (on average 1.2318096216401302) internal successors, (7195), 5990 states have internal predecessors, (7195), 3888 states have call successors, (3888), 475 states have call predecessors, (3888), 469 states have return successors, (3902), 3819 states have call predecessors, (3902), 3882 states have call successors, (3902) [2022-11-23 14:27:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 14985 transitions. [2022-11-23 14:27:28,224 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 14985 transitions. Word has length 155 [2022-11-23 14:27:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:28,225 INFO L495 AbstractCegarLoop]: Abstraction has 10201 states and 14985 transitions. [2022-11-23 14:27:28,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 14:27:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 14985 transitions. [2022-11-23 14:27:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 14:27:28,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:28,231 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:28,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:27:28,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:27:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:28,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1645427534, now seen corresponding path program 1 times [2022-11-23 14:27:28,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:28,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162265493] [2022-11-23 14:27:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-23 14:27:28,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:28,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162265493] [2022-11-23 14:27:28,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162265493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:28,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:28,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:28,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166483471] [2022-11-23 14:27:28,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:28,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:27:28,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:27:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:28,822 INFO L87 Difference]: Start difference. First operand 10201 states and 14985 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 14:27:31,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:33,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:36,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:27:40,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:43,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:46,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:48,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:49,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:49,396 INFO L93 Difference]: Finished difference Result 12818 states and 18815 transitions. [2022-11-23 14:27:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:27:49,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2022-11-23 14:27:49,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:49,518 INFO L225 Difference]: With dead ends: 12818 [2022-11-23 14:27:49,519 INFO L226 Difference]: Without dead ends: 12816 [2022-11-23 14:27:49,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:49,535 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:49,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 10493 Invalid, 1161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1153 Invalid, 6 Unknown, 0 Unchecked, 20.0s Time] [2022-11-23 14:27:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12816 states. [2022-11-23 14:27:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12816 to 12808. [2022-11-23 14:27:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12808 states, 7337 states have (on average 1.2325201035845714) internal successors, (9043), 7524 states have internal predecessors, (9043), 4874 states have call successors, (4874), 602 states have call predecessors, (4874), 594 states have return successors, (4890), 4786 states have call predecessors, (4890), 4865 states have call successors, (4890) [2022-11-23 14:27:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12808 states to 12808 states and 18807 transitions. [2022-11-23 14:27:50,830 INFO L78 Accepts]: Start accepts. Automaton has 12808 states and 18807 transitions. Word has length 160 [2022-11-23 14:27:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:50,831 INFO L495 AbstractCegarLoop]: Abstraction has 12808 states and 18807 transitions. [2022-11-23 14:27:50,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 14:27:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12808 states and 18807 transitions. [2022-11-23 14:27:50,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-23 14:27:50,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:50,843 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:50,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:27:50,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:27:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:50,845 INFO L85 PathProgramCache]: Analyzing trace with hash 207162826, now seen corresponding path program 1 times [2022-11-23 14:27:50,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589325659] [2022-11-23 14:27:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:50,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-11-23 14:27:51,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:51,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589325659] [2022-11-23 14:27:51,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589325659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:51,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:51,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:51,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083938005] [2022-11-23 14:27:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:27:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:27:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:51,575 INFO L87 Difference]: Start difference. First operand 12808 states and 18807 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:27:53,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:55,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:57,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:00,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:02,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:04,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:07,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:09,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:11,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:16,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:18,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:19,521 INFO L93 Difference]: Finished difference Result 12826 states and 18821 transitions. [2022-11-23 14:28:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:28:19,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 165 [2022-11-23 14:28:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:19,615 INFO L225 Difference]: With dead ends: 12826 [2022-11-23 14:28:19,615 INFO L226 Difference]: Without dead ends: 12824 [2022-11-23 14:28:19,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:28:19,629 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:19,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 10493 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1152 Invalid, 9 Unknown, 0 Unchecked, 27.2s Time] [2022-11-23 14:28:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12824 states. [2022-11-23 14:28:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12824 to 12816. [2022-11-23 14:28:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12816 states, 7343 states have (on average 1.232330110309138) internal successors, (9049), 7530 states have internal predecessors, (9049), 4874 states have call successors, (4874), 604 states have call predecessors, (4874), 596 states have return successors, (4890), 4786 states have call predecessors, (4890), 4865 states have call successors, (4890) [2022-11-23 14:28:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12816 states to 12816 states and 18813 transitions. [2022-11-23 14:28:20,827 INFO L78 Accepts]: Start accepts. Automaton has 12816 states and 18813 transitions. Word has length 165 [2022-11-23 14:28:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:20,829 INFO L495 AbstractCegarLoop]: Abstraction has 12816 states and 18813 transitions. [2022-11-23 14:28:20,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:28:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 12816 states and 18813 transitions. [2022-11-23 14:28:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-23 14:28:20,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:20,837 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:28:20,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:28:20,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:28:20,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1166567848, now seen corresponding path program 1 times [2022-11-23 14:28:20,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:20,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573922505] [2022-11-23 14:28:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:20,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-23 14:28:21,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:21,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573922505] [2022-11-23 14:28:21,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573922505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:21,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:21,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:28:21,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044185896] [2022-11-23 14:28:21,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:21,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:28:21,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:21,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:28:21,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:28:21,438 INFO L87 Difference]: Start difference. First operand 12816 states and 18813 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 14:28:23,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:28,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:30,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:32,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:35,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:37,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:42,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:42,924 INFO L93 Difference]: Finished difference Result 12834 states and 18827 transitions. [2022-11-23 14:28:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:28:42,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 179 [2022-11-23 14:28:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:43,003 INFO L225 Difference]: With dead ends: 12834 [2022-11-23 14:28:43,003 INFO L226 Difference]: Without dead ends: 12832 [2022-11-23 14:28:43,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:28:43,014 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2069 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:43,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 10493 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1153 Invalid, 6 Unknown, 0 Unchecked, 20.8s Time] [2022-11-23 14:28:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12832 states. [2022-11-23 14:28:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12832 to 12824. [2022-11-23 14:28:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12824 states, 7349 states have (on average 1.2321404272690162) internal successors, (9055), 7536 states have internal predecessors, (9055), 4874 states have call successors, (4874), 606 states have call predecessors, (4874), 598 states have return successors, (4890), 4786 states have call predecessors, (4890), 4865 states have call successors, (4890) [2022-11-23 14:28:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12824 states to 12824 states and 18819 transitions. [2022-11-23 14:28:44,116 INFO L78 Accepts]: Start accepts. Automaton has 12824 states and 18819 transitions. Word has length 179 [2022-11-23 14:28:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:44,121 INFO L495 AbstractCegarLoop]: Abstraction has 12824 states and 18819 transitions. [2022-11-23 14:28:44,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 14:28:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12824 states and 18819 transitions. [2022-11-23 14:28:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-23 14:28:44,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:44,129 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:28:44,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:28:44,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:28:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1396688768, now seen corresponding path program 1 times [2022-11-23 14:28:44,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:44,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969005378] [2022-11-23 14:28:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:44,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-23 14:28:44,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:44,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969005378] [2022-11-23 14:28:44,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969005378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:44,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:44,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:28:44,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748530914] [2022-11-23 14:28:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:44,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:28:44,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:28:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:28:44,759 INFO L87 Difference]: Start difference. First operand 12824 states and 18819 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 14:28:47,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:52,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:53,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:56,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:57,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:28:59,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:03,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:04,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:06,886 INFO L93 Difference]: Finished difference Result 12842 states and 18833 transitions. [2022-11-23 14:29:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:29:06,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 184 [2022-11-23 14:29:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:06,983 INFO L225 Difference]: With dead ends: 12842 [2022-11-23 14:29:06,983 INFO L226 Difference]: Without dead ends: 12840 [2022-11-23 14:29:06,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:29:06,997 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2069 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:06,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 10493 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1154 Invalid, 5 Unknown, 0 Unchecked, 21.4s Time] [2022-11-23 14:29:07,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12840 states. [2022-11-23 14:29:08,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12840 to 12832. [2022-11-23 14:29:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12832 states, 7355 states have (on average 1.2319510537049627) internal successors, (9061), 7542 states have internal predecessors, (9061), 4874 states have call successors, (4874), 608 states have call predecessors, (4874), 600 states have return successors, (4890), 4786 states have call predecessors, (4890), 4865 states have call successors, (4890) [2022-11-23 14:29:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12832 states to 12832 states and 18825 transitions. [2022-11-23 14:29:08,179 INFO L78 Accepts]: Start accepts. Automaton has 12832 states and 18825 transitions. Word has length 184 [2022-11-23 14:29:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:08,180 INFO L495 AbstractCegarLoop]: Abstraction has 12832 states and 18825 transitions. [2022-11-23 14:29:08,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 14:29:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 12832 states and 18825 transitions. [2022-11-23 14:29:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-23 14:29:08,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:08,188 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 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] [2022-11-23 14:29:08,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:29:08,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:29:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:08,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1414404658, now seen corresponding path program 1 times [2022-11-23 14:29:08,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:08,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907632692] [2022-11-23 14:29:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:08,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-11-23 14:29:08,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907632692] [2022-11-23 14:29:08,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907632692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:08,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:08,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:29:08,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263598559] [2022-11-23 14:29:08,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:08,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:29:08,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:29:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:29:08,670 INFO L87 Difference]: Start difference. First operand 12832 states and 18825 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 14:29:11,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:13,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:16,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:29:18,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:29:20,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:29:23,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:25,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:28,598 INFO L93 Difference]: Finished difference Result 12850 states and 18839 transitions. [2022-11-23 14:29:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:29:28,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 180 [2022-11-23 14:29:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:28,684 INFO L225 Difference]: With dead ends: 12850 [2022-11-23 14:29:28,684 INFO L226 Difference]: Without dead ends: 12848 [2022-11-23 14:29:28,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:29:28,694 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:28,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 10493 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1153 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2022-11-23 14:29:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12848 states. [2022-11-23 14:29:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12848 to 12840. [2022-11-23 14:29:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12840 states, 7361 states have (on average 1.2317619888602092) internal successors, (9067), 7548 states have internal predecessors, (9067), 4874 states have call successors, (4874), 610 states have call predecessors, (4874), 602 states have return successors, (4890), 4786 states have call predecessors, (4890), 4865 states have call successors, (4890) [2022-11-23 14:29:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12840 states to 12840 states and 18831 transitions. [2022-11-23 14:29:29,930 INFO L78 Accepts]: Start accepts. Automaton has 12840 states and 18831 transitions. Word has length 180 [2022-11-23 14:29:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:29,931 INFO L495 AbstractCegarLoop]: Abstraction has 12840 states and 18831 transitions. [2022-11-23 14:29:29,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 14:29:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12840 states and 18831 transitions. [2022-11-23 14:29:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-23 14:29:29,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:29,940 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 7, 6, 6, 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] [2022-11-23 14:29:29,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:29:29,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:29:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash 137712202, now seen corresponding path program 1 times [2022-11-23 14:29:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443484228] [2022-11-23 14:29:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-23 14:29:30,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:30,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443484228] [2022-11-23 14:29:30,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443484228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:30,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:30,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:29:30,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565195741] [2022-11-23 14:29:30,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:30,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:29:30,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:29:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:29:30,416 INFO L87 Difference]: Start difference. First operand 12840 states and 18831 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 14:29:32,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:35,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:38,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:29:40,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:29:43,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:48,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:48,561 INFO L93 Difference]: Finished difference Result 15634 states and 22833 transitions. [2022-11-23 14:29:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:29:48,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 185 [2022-11-23 14:29:48,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:48,653 INFO L225 Difference]: With dead ends: 15634 [2022-11-23 14:29:48,653 INFO L226 Difference]: Without dead ends: 15632 [2022-11-23 14:29:48,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:29:48,667 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 2038 mSDsluCounter, 7455 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 10178 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:48,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 10178 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1035 Invalid, 3 Unknown, 0 Unchecked, 17.1s Time] [2022-11-23 14:29:48,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15632 states. [2022-11-23 14:29:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15632 to 15625. [2022-11-23 14:29:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15625 states, 8954 states have (on average 1.2311815948179585) internal successors, (11024), 9180 states have internal predecessors, (11024), 5891 states have call successors, (5891), 788 states have call predecessors, (5891), 777 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-23 14:29:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15625 states to 15625 states and 22824 transitions. [2022-11-23 14:29:49,927 INFO L78 Accepts]: Start accepts. Automaton has 15625 states and 22824 transitions. Word has length 185 [2022-11-23 14:29:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:49,928 INFO L495 AbstractCegarLoop]: Abstraction has 15625 states and 22824 transitions. [2022-11-23 14:29:49,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 14:29:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 15625 states and 22824 transitions. [2022-11-23 14:29:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-23 14:29:49,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:49,939 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 8, 7, 7, 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] [2022-11-23 14:29:49,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:29:49,939 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:29:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:49,940 INFO L85 PathProgramCache]: Analyzing trace with hash 615213838, now seen corresponding path program 1 times [2022-11-23 14:29:49,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:49,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401683915] [2022-11-23 14:29:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:49,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-11-23 14:29:50,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:50,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401683915] [2022-11-23 14:29:50,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401683915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:50,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:50,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:29:50,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6608758] [2022-11-23 14:29:50,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:50,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:29:50,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:50,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:29:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:29:50,466 INFO L87 Difference]: Start difference. First operand 15625 states and 22824 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 14:29:53,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:29:57,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:30:00,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:30:02,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:07,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:08,670 INFO L93 Difference]: Finished difference Result 15643 states and 22838 transitions. [2022-11-23 14:30:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:30:08,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 190 [2022-11-23 14:30:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:08,768 INFO L225 Difference]: With dead ends: 15643 [2022-11-23 14:30:08,768 INFO L226 Difference]: Without dead ends: 15641 [2022-11-23 14:30:08,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:30:08,780 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:08,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 10493 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1148 Invalid, 4 Unknown, 0 Unchecked, 17.3s Time] [2022-11-23 14:30:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2022-11-23 14:30:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 15633. [2022-11-23 14:30:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15633 states, 8960 states have (on average 1.2310267857142858) internal successors, (11030), 9186 states have internal predecessors, (11030), 5891 states have call successors, (5891), 790 states have call predecessors, (5891), 779 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-23 14:30:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 22830 transitions. [2022-11-23 14:30:10,587 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 22830 transitions. Word has length 190 [2022-11-23 14:30:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:10,588 INFO L495 AbstractCegarLoop]: Abstraction has 15633 states and 22830 transitions. [2022-11-23 14:30:10,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 14:30:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 22830 transitions. [2022-11-23 14:30:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-23 14:30:10,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:10,600 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 9, 8, 8, 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] [2022-11-23 14:30:10,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:30:10,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:30:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1529396086, now seen corresponding path program 1 times [2022-11-23 14:30:10,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:10,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970095253] [2022-11-23 14:30:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-23 14:30:11,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:11,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970095253] [2022-11-23 14:30:11,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970095253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:11,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:11,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:30:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677663724] [2022-11-23 14:30:11,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:11,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:30:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:11,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:30:11,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:30:11,289 INFO L87 Difference]: Start difference. First operand 15633 states and 22830 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 14:30:13,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:16,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:19,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:30:23,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:26,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:28,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:30,146 INFO L93 Difference]: Finished difference Result 15651 states and 22844 transitions. [2022-11-23 14:30:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:30:30,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 195 [2022-11-23 14:30:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:30,222 INFO L225 Difference]: With dead ends: 15651 [2022-11-23 14:30:30,222 INFO L226 Difference]: Without dead ends: 15649 [2022-11-23 14:30:30,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:30:30,234 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:30,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 10493 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 4 Unknown, 0 Unchecked, 17.8s Time] [2022-11-23 14:30:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15649 states. [2022-11-23 14:30:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15649 to 15641. [2022-11-23 14:30:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15641 states, 8966 states have (on average 1.2308721838054875) internal successors, (11036), 9192 states have internal predecessors, (11036), 5891 states have call successors, (5891), 792 states have call predecessors, (5891), 781 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-23 14:30:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15641 states to 15641 states and 22836 transitions. [2022-11-23 14:30:31,695 INFO L78 Accepts]: Start accepts. Automaton has 15641 states and 22836 transitions. Word has length 195 [2022-11-23 14:30:31,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:31,695 INFO L495 AbstractCegarLoop]: Abstraction has 15641 states and 22836 transitions. [2022-11-23 14:30:31,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 14:30:31,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15641 states and 22836 transitions. [2022-11-23 14:30:31,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-23 14:30:31,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:31,707 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 6, 6, 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] [2022-11-23 14:30:31,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:30:31,707 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:30:31,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash -711497576, now seen corresponding path program 1 times [2022-11-23 14:30:31,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:31,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779697640] [2022-11-23 14:30:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:31,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-11-23 14:30:32,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:32,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779697640] [2022-11-23 14:30:32,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779697640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:32,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:32,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:30:32,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521742528] [2022-11-23 14:30:32,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:32,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:30:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:32,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:30:32,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:30:32,265 INFO L87 Difference]: Start difference. First operand 15641 states and 22836 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 14:30:34,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:38,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:41,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:30:45,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:47,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:50,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:51,524 INFO L93 Difference]: Finished difference Result 15657 states and 22848 transitions. [2022-11-23 14:30:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:30:51,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 209 [2022-11-23 14:30:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:51,700 INFO L225 Difference]: With dead ends: 15657 [2022-11-23 14:30:51,700 INFO L226 Difference]: Without dead ends: 15655 [2022-11-23 14:30:51,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:30:51,706 INFO L413 NwaCegarLoop]: 2807 mSDtfsCounter, 1951 mSDsluCounter, 7626 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 10433 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:51,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 10433 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2022-11-23 14:30:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15655 states. [2022-11-23 14:30:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15655 to 15645. [2022-11-23 14:30:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15645 states, 8969 states have (on average 1.2307949604192219) internal successors, (11039), 9195 states have internal predecessors, (11039), 5891 states have call successors, (5891), 793 states have call predecessors, (5891), 782 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-23 14:30:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15645 states to 15645 states and 22839 transitions. [2022-11-23 14:30:52,920 INFO L78 Accepts]: Start accepts. Automaton has 15645 states and 22839 transitions. Word has length 209 [2022-11-23 14:30:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:52,921 INFO L495 AbstractCegarLoop]: Abstraction has 15645 states and 22839 transitions. [2022-11-23 14:30:52,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 14:30:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 15645 states and 22839 transitions. [2022-11-23 14:30:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-23 14:30:52,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:52,932 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2022-11-23 14:30:52,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:30:52,933 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:30:52,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:52,934 INFO L85 PathProgramCache]: Analyzing trace with hash 953226954, now seen corresponding path program 1 times [2022-11-23 14:30:52,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:52,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182341084] [2022-11-23 14:30:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:52,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-11-23 14:30:53,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:53,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182341084] [2022-11-23 14:30:53,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182341084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:53,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:53,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:30:53,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952078907] [2022-11-23 14:30:53,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:53,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:30:53,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:30:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:30:53,517 INFO L87 Difference]: Start difference. First operand 15645 states and 22839 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 14:30:55,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:59,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:01,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:05,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:07,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:09,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:11,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:12,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:15,357 INFO L93 Difference]: Finished difference Result 15663 states and 22853 transitions. [2022-11-23 14:31:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:31:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 205 [2022-11-23 14:31:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:15,452 INFO L225 Difference]: With dead ends: 15663 [2022-11-23 14:31:15,453 INFO L226 Difference]: Without dead ends: 15659 [2022-11-23 14:31:15,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:31:15,467 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2073 mSDsluCounter, 7666 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 10493 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:31:15,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 10493 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 4 Unknown, 0 Unchecked, 20.5s Time] [2022-11-23 14:31:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15659 states. [2022-11-23 14:31:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15659 to 15651. [2022-11-23 14:31:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15651 states, 8974 states have (on average 1.2305549364831736) internal successors, (11043), 9199 states have internal predecessors, (11043), 5891 states have call successors, (5891), 795 states have call predecessors, (5891), 783 states have return successors, (5909), 5782 states have call predecessors, (5909), 5879 states have call successors, (5909) [2022-11-23 14:31:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15651 states to 15651 states and 22843 transitions. [2022-11-23 14:31:16,812 INFO L78 Accepts]: Start accepts. Automaton has 15651 states and 22843 transitions. Word has length 205 [2022-11-23 14:31:16,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:16,812 INFO L495 AbstractCegarLoop]: Abstraction has 15651 states and 22843 transitions. [2022-11-23 14:31:16,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 14:31:16,812 INFO L276 IsEmpty]: Start isEmpty. Operand 15651 states and 22843 transitions. [2022-11-23 14:31:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-23 14:31:16,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:16,822 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 11, 11, 10, 10, 10, 10, 10, 10, 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] [2022-11-23 14:31:16,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:31:16,823 INFO L420 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)] === [2022-11-23 14:31:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1839912334, now seen corresponding path program 1 times [2022-11-23 14:31:16,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:31:16,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373641783] [2022-11-23 14:31:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:16,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:31:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2022-11-23 14:31:17,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:31:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373641783] [2022-11-23 14:31:17,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373641783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:17,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:17,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:31:17,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533179032] [2022-11-23 14:31:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:17,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:31:17,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:31:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:31:17,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:31:17,465 INFO L87 Difference]: Start difference. First operand 15651 states and 22843 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 14:31:19,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:25,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:27,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:30,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:32,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:35,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:37,435 INFO L93 Difference]: Finished difference Result 15661 states and 22850 transitions. [2022-11-23 14:31:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:31:37,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 210 [2022-11-23 14:31:37,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:37,529 INFO L225 Difference]: With dead ends: 15661 [2022-11-23 14:31:37,529 INFO L226 Difference]: Without dead ends: 15588 [2022-11-23 14:31:37,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:31:37,543 INFO L413 NwaCegarLoop]: 2807 mSDtfsCounter, 1951 mSDsluCounter, 7628 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 10435 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:31:37,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 10435 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1146 Invalid, 5 Unknown, 0 Unchecked, 18.7s Time] [2022-11-23 14:31:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15588 states. [2022-11-23 14:31:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15588 to 15580. [2022-11-23 14:31:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15580 states, 8936 states have (on average 1.2310877350044762) internal successors, (11001), 9158 states have internal predecessors, (11001), 5869 states have call successors, (5869), 782 states have call predecessors, (5869), 772 states have return successors, (5890), 5765 states have call predecessors, (5890), 5860 states have call successors, (5890) [2022-11-23 14:31:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15580 states to 15580 states and 22760 transitions. [2022-11-23 14:31:39,147 INFO L78 Accepts]: Start accepts. Automaton has 15580 states and 22760 transitions. Word has length 210 [2022-11-23 14:31:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:39,147 INFO L495 AbstractCegarLoop]: Abstraction has 15580 states and 22760 transitions. [2022-11-23 14:31:39,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 14:31:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 15580 states and 22760 transitions. [2022-11-23 14:31:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-23 14:31:39,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:39,158 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:39,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:31:39,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:31:39,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2124638851, now seen corresponding path program 1 times [2022-11-23 14:31:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:31:39,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543608546] [2022-11-23 14:31:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:31:39,337 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:31:39,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937542209] [2022-11-23 14:31:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:39,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:31:39,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:31:39,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:31:39,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:31:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:41,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 3585 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:31:41,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-11-23 14:31:41,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:41,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:31:41,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543608546] [2022-11-23 14:31:41,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:31:41,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937542209] [2022-11-23 14:31:41,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937542209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:41,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:41,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:41,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807022043] [2022-11-23 14:31:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:41,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:41,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:31:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:41,308 INFO L87 Difference]: Start difference. First operand 15580 states and 22760 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 14:31:43,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:48,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:50,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:53,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:56,359 INFO L93 Difference]: Finished difference Result 44606 states and 65167 transitions. [2022-11-23 14:31:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:56,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 219 [2022-11-23 14:31:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:56,526 INFO L225 Difference]: With dead ends: 44606 [2022-11-23 14:31:56,526 INFO L226 Difference]: Without dead ends: 29047 [2022-11-23 14:31:56,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:56,678 INFO L413 NwaCegarLoop]: 2663 mSDtfsCounter, 1966 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 41 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:31:56,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 4560 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 530 Invalid, 4 Unknown, 0 Unchecked, 12.9s Time] [2022-11-23 14:31:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29047 states. [2022-11-23 14:31:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29047 to 28905. [2022-11-23 14:31:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28905 states, 16561 states have (on average 1.22365799166717) internal successors, (20265), 16982 states have internal predecessors, (20265), 10918 states have call successors, (10918), 1452 states have call predecessors, (10918), 1423 states have return successors, (10993), 10696 states have call predecessors, (10993), 10909 states have call successors, (10993) [2022-11-23 14:32:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28905 states to 28905 states and 42176 transitions. [2022-11-23 14:32:00,172 INFO L78 Accepts]: Start accepts. Automaton has 28905 states and 42176 transitions. Word has length 219 [2022-11-23 14:32:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:32:00,173 INFO L495 AbstractCegarLoop]: Abstraction has 28905 states and 42176 transitions. [2022-11-23 14:32:00,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 14:32:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 28905 states and 42176 transitions. [2022-11-23 14:32:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-23 14:32:00,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:32:00,196 INFO L195 NwaCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:32:00,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:32:00,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 14:32:00,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:32:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:32:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2145476704, now seen corresponding path program 1 times [2022-11-23 14:32:00,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:32:00,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088922493] [2022-11-23 14:32:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:32:00,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:32:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:32:00,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:32:00,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088922493] [2022-11-23 14:32:00,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 14:32:00,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667186193] [2022-11-23 14:32:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:32:00,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:32:00,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:32:00,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:32:00,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:32:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:32:02,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 3654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:32:02,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:32:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-23 14:32:02,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:32:02,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667186193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:32:02,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:32:02,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:32:02,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027142842] [2022-11-23 14:32:02,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:32:02,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:32:02,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:32:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:32:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:02,881 INFO L87 Difference]: Start difference. First operand 28905 states and 42176 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-23 14:32:06,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:09,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:10,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:13,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:15,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:32:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:32:19,995 INFO L93 Difference]: Finished difference Result 71723 states and 104353 transitions. [2022-11-23 14:32:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:32:19,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 243 [2022-11-23 14:32:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:32:20,339 INFO L225 Difference]: With dead ends: 71723 [2022-11-23 14:32:20,340 INFO L226 Difference]: Without dead ends: 42839 [2022-11-23 14:32:20,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:20,538 INFO L413 NwaCegarLoop]: 2618 mSDtfsCounter, 1946 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 21 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:32:20,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 4536 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 568 Invalid, 4 Unknown, 0 Unchecked, 13.3s Time] [2022-11-23 14:32:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42839 states. [2022-11-23 14:32:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42839 to 42697. [2022-11-23 14:32:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42697 states, 24435 states have (on average 1.2141190914671578) internal successors, (29667), 25055 states have internal predecessors, (29667), 16051 states have call successors, (16051), 2256 states have call predecessors, (16051), 2208 states have return successors, (16180), 15711 states have call predecessors, (16180), 16042 states have call successors, (16180) [2022-11-23 14:32:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42697 states to 42697 states and 61898 transitions. [2022-11-23 14:32:25,280 INFO L78 Accepts]: Start accepts. Automaton has 42697 states and 61898 transitions. Word has length 243 [2022-11-23 14:32:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:32:25,281 INFO L495 AbstractCegarLoop]: Abstraction has 42697 states and 61898 transitions. [2022-11-23 14:32:25,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-23 14:32:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 42697 states and 61898 transitions. [2022-11-23 14:32:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-23 14:32:25,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:32:25,288 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 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] [2022-11-23 14:32:25,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:32:25,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015f34d8-a88f-4a39-9f1d-a9a90b7ba63b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 14:32:25,490 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:32:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:32:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash -215991344, now seen corresponding path program 1 times [2022-11-23 14:32:25,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:32:25,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258152417] [2022-11-23 14:32:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:32:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:32:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:32:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2022-11-23 14:32:26,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:32:26,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258152417] [2022-11-23 14:32:26,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258152417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:32:26,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:32:26,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:32:26,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398005310] [2022-11-23 14:32:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:32:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:32:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:32:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:32:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:26,083 INFO L87 Difference]: Start difference. First operand 42697 states and 61898 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 14:32:30,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:33,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:35,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:39,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:32:41,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:32:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:32:44,463 INFO L93 Difference]: Finished difference Result 83306 states and 120469 transitions. [2022-11-23 14:32:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:32:44,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 293 [2022-11-23 14:32:44,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:32:44,794 INFO L225 Difference]: With dead ends: 83306 [2022-11-23 14:32:44,794 INFO L226 Difference]: Without dead ends: 40630 [2022-11-23 14:32:44,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:44,945 INFO L413 NwaCegarLoop]: 3364 mSDtfsCounter, 1620 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 5391 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:32:44,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 5391 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 662 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2022-11-23 14:32:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40630 states. [2022-11-23 14:32:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40630 to 40480. [2022-11-23 14:32:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40480 states, 23514 states have (on average 1.2120864166028749) internal successors, (28501), 24095 states have internal predecessors, (28501), 14726 states have call successors, (14726), 2278 states have call predecessors, (14726), 2237 states have return successors, (14821), 14381 states have call predecessors, (14821), 14717 states have call successors, (14821) [2022-11-23 14:32:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40480 states to 40480 states and 58048 transitions. [2022-11-23 14:32:47,893 INFO L78 Accepts]: Start accepts. Automaton has 40480 states and 58048 transitions. Word has length 293 [2022-11-23 14:32:47,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:32:47,893 INFO L495 AbstractCegarLoop]: Abstraction has 40480 states and 58048 transitions. [2022-11-23 14:32:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 14:32:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 40480 states and 58048 transitions. [2022-11-23 14:32:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-23 14:32:47,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:32:47,900 INFO L195 NwaCegarLoop]: trace histogram [21, 14, 14, 14, 14, 14, 14, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:32:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 14:32:47,901 INFO L420 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)] === [2022-11-23 14:32:47,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:32:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash 499353788, now seen corresponding path program 1 times [2022-11-23 14:32:47,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:32:47,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514973799] [2022-11-23 14:32:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:32:47,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:32:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:32:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2022-11-23 14:32:48,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:32:48,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514973799] [2022-11-23 14:32:48,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514973799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:32:48,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:32:48,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:32:48,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022808500] [2022-11-23 14:32:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:32:48,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:32:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:32:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:32:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:48,651 INFO L87 Difference]: Start difference. First operand 40480 states and 58048 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-11-23 14:32:51,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:53,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:56,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:00,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:02,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:33:04,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:33:06,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:33:08,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:33:08,886 INFO L93 Difference]: Finished difference Result 92607 states and 132681 transitions. [2022-11-23 14:33:08,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:33:08,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 325 [2022-11-23 14:33:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:33:09,162 INFO L225 Difference]: With dead ends: 92607 [2022-11-23 14:33:09,162 INFO L226 Difference]: Without dead ends: 52199 [2022-11-23 14:33:09,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:09,335 INFO L413 NwaCegarLoop]: 3474 mSDtfsCounter, 1581 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 15 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:33:09,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 5494 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 699 Invalid, 5 Unknown, 0 Unchecked, 16.5s Time] [2022-11-23 14:33:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52199 states. [2022-11-23 14:33:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52199 to 52065. [2022-11-23 14:33:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52065 states, 30423 states have (on average 1.2104328961640864) internal successors, (36825), 31163 states have internal predecessors, (36825), 18637 states have call successors, (18637), 3050 states have call predecessors, (18637), 3002 states have return successors, (18744), 18182 states have call predecessors, (18744), 18628 states have call successors, (18744) [2022-11-23 14:33:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52065 states to 52065 states and 74206 transitions. [2022-11-23 14:33:13,207 INFO L78 Accepts]: Start accepts. Automaton has 52065 states and 74206 transitions. Word has length 325 [2022-11-23 14:33:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:33:13,208 INFO L495 AbstractCegarLoop]: Abstraction has 52065 states and 74206 transitions. [2022-11-23 14:33:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-11-23 14:33:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 52065 states and 74206 transitions. [2022-11-23 14:33:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-11-23 14:33:13,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:33:13,214 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:33:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 14:33:13,214 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:33:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:33:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1325749286, now seen corresponding path program 1 times [2022-11-23 14:33:13,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:33:13,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881777344] [2022-11-23 14:33:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:33:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:33:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:33:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2022-11-23 14:33:13,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:33:13,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881777344] [2022-11-23 14:33:13,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881777344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:33:13,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:33:13,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:33:13,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757523409] [2022-11-23 14:33:13,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:33:13,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:33:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:33:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:33:13,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:33:13,880 INFO L87 Difference]: Start difference. First operand 52065 states and 74206 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-23 14:33:17,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:19,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:22,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:24,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:25,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:28,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:33:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:33:36,671 INFO L93 Difference]: Finished difference Result 109449 states and 157839 transitions. [2022-11-23 14:33:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:33:36,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 387 [2022-11-23 14:33:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:33:37,183 INFO L225 Difference]: With dead ends: 109449 [2022-11-23 14:33:37,183 INFO L226 Difference]: Without dead ends: 70337 [2022-11-23 14:33:37,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:33:37,342 INFO L413 NwaCegarLoop]: 2722 mSDtfsCounter, 767 mSDsluCounter, 4850 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 177 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 7572 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:33:37,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 7572 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 967 Invalid, 3 Unknown, 0 Unchecked, 17.5s Time] [2022-11-23 14:33:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70337 states. [2022-11-23 14:33:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70337 to 52113. [2022-11-23 14:33:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52113 states, 30471 states have (on average 1.2101014078960324) internal successors, (36873), 31211 states have internal predecessors, (36873), 18637 states have call successors, (18637), 3050 states have call predecessors, (18637), 3002 states have return successors, (18744), 18182 states have call predecessors, (18744), 18628 states have call successors, (18744) [2022-11-23 14:33:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52113 states to 52113 states and 74254 transitions. [2022-11-23 14:33:42,654 INFO L78 Accepts]: Start accepts. Automaton has 52113 states and 74254 transitions. Word has length 387 [2022-11-23 14:33:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:33:42,655 INFO L495 AbstractCegarLoop]: Abstraction has 52113 states and 74254 transitions. [2022-11-23 14:33:42,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-23 14:33:42,656 INFO L276 IsEmpty]: Start isEmpty. Operand 52113 states and 74254 transitions. [2022-11-23 14:33:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-11-23 14:33:42,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:33:42,666 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:33:42,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 14:33:42,667 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:33:42,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:33:42,668 INFO L85 PathProgramCache]: Analyzing trace with hash 844799868, now seen corresponding path program 1 times [2022-11-23 14:33:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:33:42,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852140459] [2022-11-23 14:33:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:33:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms