./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-ethernet-atheros-atlx-atl2.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P --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 a17c24f91a3bb3d64b949ed6598dfddc35ec4ff57290faa768ce9df2bba8e700 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:12:54,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:12:54,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:12:54,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:12:54,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:12:54,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:12:54,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:12:54,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:12:54,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:12:54,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:12:54,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:12:54,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:12:54,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:12:54,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:12:54,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:12:54,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:12:54,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:12:54,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:12:54,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:12:54,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:12:54,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:12:54,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:12:54,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:12:54,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:12:54,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:12:54,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:12:54,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:12:54,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:12:54,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:12:54,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:12:54,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:12:54,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:12:54,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:12:54,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:12:54,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:12:54,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:12:54,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:12:54,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:12:54,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:12:54,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:12:54,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:12:54,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:12:54,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:12:54,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:12:54,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:12:54,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:12:54,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:12:54,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:12:54,914 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:12:54,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:12:54,914 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:12:54,914 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:12:54,915 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:12:54,916 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:12:54,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:12:54,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:12:54,916 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:12:54,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:12:54,917 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:12:54,917 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:12:54,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:12:54,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:12:54,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:12:54,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:12:54,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:12:54,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:12:54,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:12:54,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:12:54,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:12:54,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:12:54,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:12:54,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:54,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:12:54,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:12:54,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:12:54,923 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:12:54,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:12:54,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:12:54,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:12:54,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:12:54,924 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a17c24f91a3bb3d64b949ed6598dfddc35ec4ff57290faa768ce9df2bba8e700 [2021-11-20 23:12:55,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:12:55,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:12:55,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:12:55,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:12:55,209 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:12:55,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2021-11-20 23:12:55,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/data/36446622d/b218ce6bc08d4610a96b075288df04a4/FLAG1d8889a4a [2021-11-20 23:12:56,262 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:12:56,263 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2021-11-20 23:12:56,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/data/36446622d/b218ce6bc08d4610a96b075288df04a4/FLAG1d8889a4a [2021-11-20 23:12:56,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/data/36446622d/b218ce6bc08d4610a96b075288df04a4 [2021-11-20 23:12:56,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:12:56,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:12:56,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:56,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:12:56,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:12:56,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:56" (1/1) ... [2021-11-20 23:12:56,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ce5f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:56, skipping insertion in model container [2021-11-20 23:12:56,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:56" (1/1) ... [2021-11-20 23:12:56,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:12:56,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:13:00,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396127,396140] [2021-11-20 23:13:00,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396296,396309] [2021-11-20 23:13:00,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396463,396476] [2021-11-20 23:13:00,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396631,396644] [2021-11-20 23:13:00,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:00,790 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:13:01,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396127,396140] [2021-11-20 23:13:01,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396296,396309] [2021-11-20 23:13:01,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396463,396476] [2021-11-20 23:13:01,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396631,396644] [2021-11-20 23:13:01,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:01,664 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:13:01,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01 WrapperNode [2021-11-20 23:13:01,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:01,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:01,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:13:01,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:13:01,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:01,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,136 INFO L137 Inliner]: procedures = 537, calls = 2748, calls flagged for inlining = 264, calls inlined = 238, statements flattened = 6333 [2021-11-20 23:13:02,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:02,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:13:02,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:13:02,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:13:02,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:13:02,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:13:02,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:13:02,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:13:02,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (1/1) ... [2021-11-20 23:13:02,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:02,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:02,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:13:02,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32968fd-f435-44ae-b79a-491b8d8f0227/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:13:02,598 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-20 23:13:02,598 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-20 23:13:02,598 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_eeprom_len [2021-11-20 23:13:02,599 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_eeprom_len [2021-11-20 23:13:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 23:13:02,599 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 23:13:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_nway_reset [2021-11-20 23:13:02,599 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_nway_reset [2021-11-20 23:13:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:13:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:13:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:13:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:13:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-20 23:13:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-20 23:13:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:13:02,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:13:02,601 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-20 23:13:02,601 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-20 23:13:02,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:13:02,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:13:02,601 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-20 23:13:02,602 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-20 23:13:02,602 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:13:02,602 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:13:02,602 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-20 23:13:02,602 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-20 23:13:02,602 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-20 23:13:02,602 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-20 23:13:02,603 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_free_irq [2021-11-20 23:13:02,603 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_free_irq [2021-11-20 23:13:02,603 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-20 23:13:02,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-20 23:13:02,603 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:13:02,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:13:02,604 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_close [2021-11-20 23:13:02,604 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_close [2021-11-20 23:13:02,604 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_speed_and_duplex [2021-11-20 23:13:02,604 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_speed_and_duplex [2021-11-20 23:13:02,604 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_force_ps [2021-11-20 23:13:02,604 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_force_ps [2021-11-20 23:13:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:13:02,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:13:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:13:02,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:13:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:13:02,605 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:13:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-20 23:13:02,606 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-20 23:13:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:13:02,606 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:13:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:13:02,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:13:02,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:13:02,607 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-20 23:13:02,607 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-20 23:13:02,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-20 23:13:02,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-20 23:13:02,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-20 23:13:02,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-20 23:13:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_write_phy_reg [2021-11-20 23:13:02,608 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_write_phy_reg [2021-11-20 23:13:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-20 23:13:02,608 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-20 23:13:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_vlan_mode [2021-11-20 23:13:02,608 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_vlan_mode [2021-11-20 23:13:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:13:02,609 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:13:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_up [2021-11-20 23:13:02,609 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_up [2021-11-20 23:13:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:13:02,609 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:13:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 23:13:02,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 23:13:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:13:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_tx_timeout [2021-11-20 23:13:02,610 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_tx_timeout [2021-11-20 23:13:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_irq_enable [2021-11-20 23:13:02,610 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_irq_enable [2021-11-20 23:13:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:13:02,611 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:13:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_poll_controller [2021-11-20 23:13:02,611 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_poll_controller [2021-11-20 23:13:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:13:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:13:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:13:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:13:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_irq_disable [2021-11-20 23:13:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_irq_disable [2021-11-20 23:13:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:13:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:13:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_stats_lock_of_atl2_adapter [2021-11-20 23:13:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_stats_lock_of_atl2_adapter [2021-11-20 23:13:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:13:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:13:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:13:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:13:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-20 23:13:02,614 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-20 23:13:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:13:02,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:13:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:13:02,614 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:13:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_shutdown [2021-11-20 23:13:02,615 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_shutdown [2021-11-20 23:13:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure __atl2_vlan_mode [2021-11-20 23:13:02,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl2_vlan_mode [2021-11-20 23:13:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:13:02,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:13:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:13:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:13:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:13:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:13:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:13:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-20 23:13:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-20 23:13:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:13:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 23:13:02,617 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 23:13:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:13:02,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:13:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:13:02,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:13:02,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:13:02,618 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:13:02,618 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_set_multi [2021-11-20 23:13:02,618 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_set_multi [2021-11-20 23:13:02,618 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_phy_init [2021-11-20 23:13:02,618 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_phy_init [2021-11-20 23:13:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-20 23:13:02,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-20 23:13:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_configure [2021-11-20 23:13:02,619 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_configure [2021-11-20 23:13:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_reset_hw [2021-11-20 23:13:02,619 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_reset_hw [2021-11-20 23:13:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:13:02,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:13:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 23:13:02,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 23:13:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_open [2021-11-20 23:13:02,620 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_open [2021-11-20 23:13:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:13:02,620 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:13:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:13:02,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:13:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_validate_option [2021-11-20 23:13:02,621 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_validate_option [2021-11-20 23:13:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_stats_lock_of_atl2_adapter [2021-11-20 23:13:02,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_stats_lock_of_atl2_adapter [2021-11-20 23:13:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:13:02,622 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:13:02,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:13:02,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:13:02,622 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_intr [2021-11-20 23:13:02,622 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_intr [2021-11-20 23:13:02,622 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 23:13:02,622 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 23:13:02,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:13:02,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:13:02,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:13:02,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:13:02,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:13:02,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:13:02,623 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:13:02,624 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:13:02,624 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-20 23:13:02,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:13:02,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:13:02,624 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_remove [2021-11-20 23:13:02,624 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_remove [2021-11-20 23:13:02,624 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_read_eeprom [2021-11-20 23:13:02,625 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_read_eeprom [2021-11-20 23:13:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-20 23:13:02,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-20 23:13:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:13:02,625 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:13:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:13:02,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:13:02,626 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_request_irq [2021-11-20 23:13:02,626 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_request_irq [2021-11-20 23:13:02,626 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:13:02,626 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:13:02,626 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_read_phy_reg [2021-11-20 23:13:02,626 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_read_phy_reg [2021-11-20 23:13:02,626 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-20 23:13:02,627 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-20 23:13:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:13:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:13:02,627 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:13:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-20 23:13:02,627 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-20 23:13:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:13:02,628 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:13:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:13:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-20 23:13:02,628 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-20 23:13:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_suspend [2021-11-20 23:13:02,628 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_suspend [2021-11-20 23:13:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:13:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_reinit_locked [2021-11-20 23:13:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_reinit_locked [2021-11-20 23:13:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:13:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:13:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:13:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:13:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 23:13:02,630 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 23:13:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_resume [2021-11-20 23:13:02,630 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_resume [2021-11-20 23:13:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:13:02,630 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:13:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-20 23:13:02,631 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-20 23:13:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2021-11-20 23:13:02,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2021-11-20 23:13:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:13:02,631 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:13:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:13:02,631 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:13:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:13:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:13:02,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:13:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_regs_len [2021-11-20 23:13:02,632 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_regs_len [2021-11-20 23:13:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_check_eeprom_exist [2021-11-20 23:13:02,632 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_check_eeprom_exist [2021-11-20 23:13:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:13:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:13:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_restore_vlan [2021-11-20 23:13:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_restore_vlan [2021-11-20 23:13:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-20 23:13:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-20 23:13:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2021-11-20 23:13:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2021-11-20 23:13:02,634 INFO L130 BoogieDeclarations]: Found specification of procedure init_ring_ptrs [2021-11-20 23:13:02,634 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ring_ptrs [2021-11-20 23:13:02,634 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 23:13:02,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 23:13:02,634 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-20 23:13:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-20 23:13:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_free_ring_resources [2021-11-20 23:13:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_free_ring_resources [2021-11-20 23:13:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:13:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:13:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_down [2021-11-20 23:13:02,636 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_down [2021-11-20 23:13:02,636 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-20 23:13:02,636 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-20 23:13:02,636 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-20 23:13:02,636 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-20 23:13:02,636 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 23:13:02,636 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 23:13:02,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 23:13:02,637 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 23:13:02,637 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_init_hw [2021-11-20 23:13:02,637 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_init_hw [2021-11-20 23:13:02,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:13:02,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:13:02,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:13:02,638 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-20 23:13:03,668 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:13:03,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:13:03,834 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:13:10,030 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:13:10,470 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:13:12,204 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:13:12,204 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-20 23:13:12,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:12 BoogieIcfgContainer [2021-11-20 23:13:12,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:13:12,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:13:12,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:13:12,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:13:12,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:56" (1/3) ... [2021-11-20 23:13:12,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281744b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:12, skipping insertion in model container [2021-11-20 23:13:12,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:01" (2/3) ... [2021-11-20 23:13:12,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281744b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:12, skipping insertion in model container [2021-11-20 23:13:12,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:12" (3/3) ... [2021-11-20 23:13:12,219 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2021-11-20 23:13:12,225 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:13:12,226 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:13:12,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:13:12,319 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:13:12,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:13:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 1758 states, 1012 states have (on average 1.2598814229249011) internal successors, (1275), 1034 states have internal predecessors, (1275), 624 states have call successors, (624), 120 states have call predecessors, (624), 119 states have return successors, (619), 617 states have call predecessors, (619), 619 states have call successors, (619) [2021-11-20 23:13:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-20 23:13:12,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:12,424 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:12,425 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:13:12,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash -839595547, now seen corresponding path program 1 times [2021-11-20 23:13:12,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:12,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284076672] [2021-11-20 23:13:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:12,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:13:13,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:13,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284076672] [2021-11-20 23:13:13,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284076672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:13,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:13,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:13,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620175854] [2021-11-20 23:13:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:13,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:13,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:13,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:13,192 INFO L87 Difference]: Start difference. First operand has 1758 states, 1012 states have (on average 1.2598814229249011) internal successors, (1275), 1034 states have internal predecessors, (1275), 624 states have call successors, (624), 120 states have call predecessors, (624), 119 states have return successors, (619), 617 states have call predecessors, (619), 619 states have call successors, (619) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:13:19,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:20,505 INFO L93 Difference]: Finished difference Result 5003 states and 7245 transitions. [2021-11-20 23:13:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2021-11-20 23:13:20,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:20,670 INFO L225 Difference]: With dead ends: 5003 [2021-11-20 23:13:20,671 INFO L226 Difference]: Without dead ends: 3262 [2021-11-20 23:13:20,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:20,692 INFO L933 BasicCegarLoop]: 2774 mSDtfsCounter, 2174 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 4949 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:20,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2174 Valid, 4949 Invalid, 628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 624 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-20 23:13:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-11-20 23:13:21,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3257. [2021-11-20 23:13:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 1876 states have (on average 1.25) internal successors, (2345), 1917 states have internal predecessors, (2345), 1148 states have call successors, (1148), 231 states have call predecessors, (1148), 230 states have return successors, (1145), 1141 states have call predecessors, (1145), 1145 states have call successors, (1145) [2021-11-20 23:13:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 4638 transitions. [2021-11-20 23:13:21,101 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 4638 transitions. Word has length 147 [2021-11-20 23:13:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:21,103 INFO L470 AbstractCegarLoop]: Abstraction has 3257 states and 4638 transitions. [2021-11-20 23:13:21,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:13:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 4638 transitions. [2021-11-20 23:13:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-20 23:13:21,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:21,110 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:21,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:13:21,111 INFO L402 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)] === [2021-11-20 23:13:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:21,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1168634516, now seen corresponding path program 1 times [2021-11-20 23:13:21,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:21,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026259623] [2021-11-20 23:13:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:21,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:13:21,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:21,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026259623] [2021-11-20 23:13:21,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026259623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:21,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:21,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:21,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142268854] [2021-11-20 23:13:21,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:21,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:21,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:21,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:21,441 INFO L87 Difference]: Start difference. First operand 3257 states and 4638 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:13:25,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:29,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:30,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:30,311 INFO L93 Difference]: Finished difference Result 9384 states and 13366 transitions. [2021-11-20 23:13:30,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:30,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2021-11-20 23:13:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:30,382 INFO L225 Difference]: With dead ends: 9384 [2021-11-20 23:13:30,382 INFO L226 Difference]: Without dead ends: 6154 [2021-11-20 23:13:30,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:30,404 INFO L933 BasicCegarLoop]: 2758 mSDtfsCounter, 2168 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 4876 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:30,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2168 Valid, 4876 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 616 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-20 23:13:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-11-20 23:13:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6121. [2021-11-20 23:13:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6121 states, 3538 states have (on average 1.252967778405879) internal successors, (4433), 3625 states have internal predecessors, (4433), 2139 states have call successors, (2139), 452 states have call predecessors, (2139), 441 states have return successors, (2150), 2104 states have call predecessors, (2150), 2136 states have call successors, (2150) [2021-11-20 23:13:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6121 states to 6121 states and 8722 transitions. [2021-11-20 23:13:30,863 INFO L78 Accepts]: Start accepts. Automaton has 6121 states and 8722 transitions. Word has length 152 [2021-11-20 23:13:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:30,864 INFO L470 AbstractCegarLoop]: Abstraction has 6121 states and 8722 transitions. [2021-11-20 23:13:30,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:13:30,864 INFO L276 IsEmpty]: Start isEmpty. Operand 6121 states and 8722 transitions. [2021-11-20 23:13:30,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-20 23:13:30,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:30,870 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:30,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:13:30,871 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:13:30,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:30,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1734928910, now seen corresponding path program 1 times [2021-11-20 23:13:30,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:30,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961463263] [2021-11-20 23:13:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:30,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:13:31,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961463263] [2021-11-20 23:13:31,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961463263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:31,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:31,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:31,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742597798] [2021-11-20 23:13:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:31,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:31,102 INFO L87 Difference]: Start difference. First operand 6121 states and 8722 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:13:33,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:38,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:40,265 INFO L93 Difference]: Finished difference Result 18052 states and 25766 transitions. [2021-11-20 23:13:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:40,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 163 [2021-11-20 23:13:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:40,366 INFO L225 Difference]: With dead ends: 18052 [2021-11-20 23:13:40,366 INFO L226 Difference]: Without dead ends: 11958 [2021-11-20 23:13:40,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:40,404 INFO L933 BasicCegarLoop]: 2838 mSDtfsCounter, 2200 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 4994 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:40,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2200 Valid, 4994 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 630 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-20 23:13:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11958 states. [2021-11-20 23:13:41,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11958 to 11921. [2021-11-20 23:13:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11921 states, 6898 states have (on average 1.2526819367932733) internal successors, (8641), 7077 states have internal predecessors, (8641), 4159 states have call successors, (4159), 890 states have call predecessors, (4159), 861 states have return successors, (4224), 4070 states have call predecessors, (4224), 4156 states have call successors, (4224) [2021-11-20 23:13:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11921 states to 11921 states and 17024 transitions. [2021-11-20 23:13:41,270 INFO L78 Accepts]: Start accepts. Automaton has 11921 states and 17024 transitions. Word has length 163 [2021-11-20 23:13:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:41,271 INFO L470 AbstractCegarLoop]: Abstraction has 11921 states and 17024 transitions. [2021-11-20 23:13:41,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:13:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 11921 states and 17024 transitions. [2021-11-20 23:13:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-20 23:13:41,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:41,280 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:41,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:13:41,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:13:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:41,281 INFO L85 PathProgramCache]: Analyzing trace with hash 310236256, now seen corresponding path program 1 times [2021-11-20 23:13:41,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:41,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093993480] [2021-11-20 23:13:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:41,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:13:41,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:41,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093993480] [2021-11-20 23:13:41,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093993480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:41,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:41,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:41,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622304768] [2021-11-20 23:13:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:41,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:41,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:41,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:41,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:41,494 INFO L87 Difference]: Start difference. First operand 11921 states and 17024 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:13:45,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:48,685 INFO L93 Difference]: Finished difference Result 26003 states and 36744 transitions. [2021-11-20 23:13:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:48,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 166 [2021-11-20 23:13:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:48,792 INFO L225 Difference]: With dead ends: 26003 [2021-11-20 23:13:48,793 INFO L226 Difference]: Without dead ends: 14109 [2021-11-20 23:13:48,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:48,857 INFO L933 BasicCegarLoop]: 2673 mSDtfsCounter, 1588 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 4796 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:48,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 4796 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 674 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-20 23:13:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14109 states. [2021-11-20 23:13:49,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14109 to 14079. [2021-11-20 23:13:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14079 states, 7977 states have (on average 1.2187539175128494) internal successors, (9722), 8209 states have internal predecessors, (9722), 4931 states have call successors, (4931), 1212 states have call predecessors, (4931), 1168 states have return successors, (5026), 4804 states have call predecessors, (5026), 4928 states have call successors, (5026) [2021-11-20 23:13:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14079 states to 14079 states and 19679 transitions. [2021-11-20 23:13:49,802 INFO L78 Accepts]: Start accepts. Automaton has 14079 states and 19679 transitions. Word has length 166 [2021-11-20 23:13:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:49,803 INFO L470 AbstractCegarLoop]: Abstraction has 14079 states and 19679 transitions. [2021-11-20 23:13:49,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:13:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 14079 states and 19679 transitions. [2021-11-20 23:13:49,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-20 23:13:49,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:49,812 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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] [2021-11-20 23:13:49,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:13:49,813 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:13:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:49,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1791672640, now seen corresponding path program 1 times [2021-11-20 23:13:49,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:49,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184629539] [2021-11-20 23:13:49,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:49,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2021-11-20 23:13:50,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:50,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184629539] [2021-11-20 23:13:50,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184629539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:50,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:50,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:13:50,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271180717] [2021-11-20 23:13:50,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:50,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:13:50,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:13:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:13:50,101 INFO L87 Difference]: Start difference. First operand 14079 states and 19679 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:13:56,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:58,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:01,313 INFO L93 Difference]: Finished difference Result 14339 states and 19921 transitions. [2021-11-20 23:14:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:01,313 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 185 [2021-11-20 23:14:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:01,375 INFO L225 Difference]: With dead ends: 14339 [2021-11-20 23:14:01,375 INFO L226 Difference]: Without dead ends: 14337 [2021-11-20 23:14:01,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:01,387 INFO L933 BasicCegarLoop]: 2203 mSDtfsCounter, 2428 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 6624 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:01,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2442 Valid, 6624 Invalid, 961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 957 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-11-20 23:14:01,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14337 states. [2021-11-20 23:14:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14337 to 14335. [2021-11-20 23:14:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14335 states, 8126 states have (on average 1.2179424070883584) internal successors, (9897), 8374 states have internal predecessors, (9897), 4963 states have call successors, (4963), 1287 states have call predecessors, (4963), 1243 states have return successors, (5058), 4836 states have call predecessors, (5058), 4960 states have call successors, (5058) [2021-11-20 23:14:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14335 states to 14335 states and 19918 transitions. [2021-11-20 23:14:02,333 INFO L78 Accepts]: Start accepts. Automaton has 14335 states and 19918 transitions. Word has length 185 [2021-11-20 23:14:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:02,334 INFO L470 AbstractCegarLoop]: Abstraction has 14335 states and 19918 transitions. [2021-11-20 23:14:02,335 INFO L471 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:14:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 14335 states and 19918 transitions. [2021-11-20 23:14:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-20 23:14:02,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:02,340 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:02,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:14:02,341 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1803646208, now seen corresponding path program 1 times [2021-11-20 23:14:02,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:02,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126722154] [2021-11-20 23:14:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:02,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2021-11-20 23:14:02,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:02,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126722154] [2021-11-20 23:14:02,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126722154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:02,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:02,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:02,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094664473] [2021-11-20 23:14:02,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:02,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:02,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:02,586 INFO L87 Difference]: Start difference. First operand 14335 states and 19918 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 23:14:08,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:10,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:14,278 INFO L93 Difference]: Finished difference Result 14341 states and 19923 transitions. [2021-11-20 23:14:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 190 [2021-11-20 23:14:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:14,346 INFO L225 Difference]: With dead ends: 14341 [2021-11-20 23:14:14,346 INFO L226 Difference]: Without dead ends: 14339 [2021-11-20 23:14:14,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:14,355 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:14,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2448 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2021-11-20 23:14:14,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14339 states. [2021-11-20 23:14:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14339 to 14339. [2021-11-20 23:14:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14339 states, 8129 states have (on average 1.2178619756427604) internal successors, (9900), 8377 states have internal predecessors, (9900), 4963 states have call successors, (4963), 1288 states have call predecessors, (4963), 1244 states have return successors, (5058), 4836 states have call predecessors, (5058), 4960 states have call successors, (5058) [2021-11-20 23:14:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14339 states to 14339 states and 19921 transitions. [2021-11-20 23:14:15,331 INFO L78 Accepts]: Start accepts. Automaton has 14339 states and 19921 transitions. Word has length 190 [2021-11-20 23:14:15,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:15,332 INFO L470 AbstractCegarLoop]: Abstraction has 14339 states and 19921 transitions. [2021-11-20 23:14:15,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 23:14:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 14339 states and 19921 transitions. [2021-11-20 23:14:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-20 23:14:15,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:15,339 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 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] [2021-11-20 23:14:15,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:14:15,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:15,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1667169414, now seen corresponding path program 1 times [2021-11-20 23:14:15,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:15,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787043507] [2021-11-20 23:14:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:15,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-20 23:14:15,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:15,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787043507] [2021-11-20 23:14:15,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787043507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:15,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:15,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:15,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393081260] [2021-11-20 23:14:15,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:15,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:15,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:15,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:15,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:15,555 INFO L87 Difference]: Start difference. First operand 14339 states and 19921 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-20 23:14:21,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:23,177 INFO L93 Difference]: Finished difference Result 29718 states and 41371 transitions. [2021-11-20 23:14:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 200 [2021-11-20 23:14:23,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:23,245 INFO L225 Difference]: With dead ends: 29718 [2021-11-20 23:14:23,245 INFO L226 Difference]: Without dead ends: 15406 [2021-11-20 23:14:23,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:23,292 INFO L933 BasicCegarLoop]: 3362 mSDtfsCounter, 1562 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 5511 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:23,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 5511 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 831 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-20 23:14:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15406 states. [2021-11-20 23:14:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15406 to 15363. [2021-11-20 23:14:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15363 states, 8916 states have (on average 1.2348586810228803) internal successors, (11010), 9178 states have internal predecessors, (11010), 5114 states have call successors, (5114), 1366 states have call predecessors, (5114), 1330 states have return successors, (5179), 4983 states have call predecessors, (5179), 5111 states have call successors, (5179) [2021-11-20 23:14:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15363 states to 15363 states and 21303 transitions. [2021-11-20 23:14:24,334 INFO L78 Accepts]: Start accepts. Automaton has 15363 states and 21303 transitions. Word has length 200 [2021-11-20 23:14:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:24,335 INFO L470 AbstractCegarLoop]: Abstraction has 15363 states and 21303 transitions. [2021-11-20 23:14:24,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-20 23:14:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 15363 states and 21303 transitions. [2021-11-20 23:14:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-20 23:14:24,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:24,340 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:24,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:14:24,341 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:24,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:24,342 INFO L85 PathProgramCache]: Analyzing trace with hash 934952576, now seen corresponding path program 1 times [2021-11-20 23:14:24,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:24,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596039182] [2021-11-20 23:14:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:24,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2021-11-20 23:14:24,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:24,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596039182] [2021-11-20 23:14:24,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596039182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:24,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:24,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:24,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694665394] [2021-11-20 23:14:24,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:24,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:24,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:24,736 INFO L87 Difference]: Start difference. First operand 15363 states and 21303 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 23:14:28,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:29,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:33,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:37,686 INFO L93 Difference]: Finished difference Result 15369 states and 21308 transitions. [2021-11-20 23:14:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:37,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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 195 [2021-11-20 23:14:37,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:37,778 INFO L225 Difference]: With dead ends: 15369 [2021-11-20 23:14:37,778 INFO L226 Difference]: Without dead ends: 15367 [2021-11-20 23:14:37,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:37,790 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:37,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2447 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2021-11-20 23:14:37,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2021-11-20 23:14:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 15367. [2021-11-20 23:14:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 8919 states have (on average 1.234779683821056) internal successors, (11013), 9181 states have internal predecessors, (11013), 5114 states have call successors, (5114), 1367 states have call predecessors, (5114), 1331 states have return successors, (5179), 4983 states have call predecessors, (5179), 5111 states have call successors, (5179) [2021-11-20 23:14:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 21306 transitions. [2021-11-20 23:14:38,820 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 21306 transitions. Word has length 195 [2021-11-20 23:14:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:38,821 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 21306 transitions. [2021-11-20 23:14:38,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 23:14:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 21306 transitions. [2021-11-20 23:14:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-20 23:14:38,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:38,826 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:38,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:14:38,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:38,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:38,828 INFO L85 PathProgramCache]: Analyzing trace with hash 656440512, now seen corresponding path program 1 times [2021-11-20 23:14:38,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:38,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438410113] [2021-11-20 23:14:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:38,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2021-11-20 23:14:39,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:39,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438410113] [2021-11-20 23:14:39,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438410113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:39,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:39,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:39,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022947808] [2021-11-20 23:14:39,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:39,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:39,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:39,112 INFO L87 Difference]: Start difference. First operand 15367 states and 21306 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 23:14:40,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:45,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:47,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:50,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:56,206 INFO L93 Difference]: Finished difference Result 20490 states and 28178 transitions. [2021-11-20 23:14:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:14:56,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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 200 [2021-11-20 23:14:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:56,307 INFO L225 Difference]: With dead ends: 20490 [2021-11-20 23:14:56,308 INFO L226 Difference]: Without dead ends: 20488 [2021-11-20 23:14:56,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:56,321 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 1579 mSDsluCounter, 8481 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:56,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 10234 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1295 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2021-11-20 23:14:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20488 states. [2021-11-20 23:14:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20488 to 20481. [2021-11-20 23:14:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20481 states, 11819 states have (on average 1.2237921990016076) internal successors, (14464), 12175 states have internal predecessors, (14464), 6807 states have call successors, (6807), 1903 states have call predecessors, (6807), 1852 states have return successors, (6901), 6621 states have call predecessors, (6901), 6801 states have call successors, (6901) [2021-11-20 23:14:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20481 states to 20481 states and 28172 transitions. [2021-11-20 23:14:57,946 INFO L78 Accepts]: Start accepts. Automaton has 20481 states and 28172 transitions. Word has length 200 [2021-11-20 23:14:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:57,947 INFO L470 AbstractCegarLoop]: Abstraction has 20481 states and 28172 transitions. [2021-11-20 23:14:57,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 23:14:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 20481 states and 28172 transitions. [2021-11-20 23:14:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-20 23:14:57,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:57,953 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 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] [2021-11-20 23:14:57,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:14:57,953 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:57,954 INFO L85 PathProgramCache]: Analyzing trace with hash 558120512, now seen corresponding path program 1 times [2021-11-20 23:14:57,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:57,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862646233] [2021-11-20 23:14:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:57,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2021-11-20 23:14:58,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:58,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862646233] [2021-11-20 23:14:58,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862646233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:58,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:58,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:58,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227543261] [2021-11-20 23:14:58,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:58,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:58,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:58,237 INFO L87 Difference]: Start difference. First operand 20481 states and 28172 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 23:15:02,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:04,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:06,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:09,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:13,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:14,754 INFO L93 Difference]: Finished difference Result 20494 states and 28181 transitions. [2021-11-20 23:15:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:15:14,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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 205 [2021-11-20 23:15:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:14,849 INFO L225 Difference]: With dead ends: 20494 [2021-11-20 23:15:14,850 INFO L226 Difference]: Without dead ends: 20492 [2021-11-20 23:15:14,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:15:14,861 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 1579 mSDsluCounter, 8478 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:14,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 10234 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1291 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2021-11-20 23:15:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20492 states. [2021-11-20 23:15:16,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20492 to 20485. [2021-11-20 23:15:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20485 states, 11822 states have (on average 1.2237354085603114) internal successors, (14467), 12178 states have internal predecessors, (14467), 6807 states have call successors, (6807), 1904 states have call predecessors, (6807), 1853 states have return successors, (6901), 6621 states have call predecessors, (6901), 6801 states have call successors, (6901) [2021-11-20 23:15:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20485 states to 20485 states and 28175 transitions. [2021-11-20 23:15:16,426 INFO L78 Accepts]: Start accepts. Automaton has 20485 states and 28175 transitions. Word has length 205 [2021-11-20 23:15:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:16,427 INFO L470 AbstractCegarLoop]: Abstraction has 20485 states and 28175 transitions. [2021-11-20 23:15:16,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 23:15:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 20485 states and 28175 transitions. [2021-11-20 23:15:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-20 23:15:16,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:16,434 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:16,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:15:16,434 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:15:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -495307433, now seen corresponding path program 1 times [2021-11-20 23:15:16,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:16,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251483469] [2021-11-20 23:15:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:16,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2021-11-20 23:15:16,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:16,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251483469] [2021-11-20 23:15:16,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251483469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:16,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:16,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:15:16,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256614646] [2021-11-20 23:15:16,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:16,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:15:16,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:16,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:15:16,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:16,713 INFO L87 Difference]: Start difference. First operand 20485 states and 28175 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-20 23:15:21,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:25,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:27,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:31,724 INFO L93 Difference]: Finished difference Result 20495 states and 28184 transitions. [2021-11-20 23:15:31,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:15:31,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 219 [2021-11-20 23:15:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:31,928 INFO L225 Difference]: With dead ends: 20495 [2021-11-20 23:15:31,928 INFO L226 Difference]: Without dead ends: 20493 [2021-11-20 23:15:31,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:15:31,939 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:31,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2440 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 947 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2021-11-20 23:15:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20493 states. [2021-11-20 23:15:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20493 to 20493. [2021-11-20 23:15:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20493 states, 11828 states have (on average 1.2236219141021305) internal successors, (14473), 12184 states have internal predecessors, (14473), 6807 states have call successors, (6807), 1906 states have call predecessors, (6807), 1855 states have return successors, (6901), 6621 states have call predecessors, (6901), 6801 states have call successors, (6901) [2021-11-20 23:15:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20493 states to 20493 states and 28181 transitions. [2021-11-20 23:15:33,520 INFO L78 Accepts]: Start accepts. Automaton has 20493 states and 28181 transitions. Word has length 219 [2021-11-20 23:15:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:33,521 INFO L470 AbstractCegarLoop]: Abstraction has 20493 states and 28181 transitions. [2021-11-20 23:15:33,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-20 23:15:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 20493 states and 28181 transitions. [2021-11-20 23:15:33,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-20 23:15:33,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:33,528 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:33,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:15:33,528 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:15:33,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:33,529 INFO L85 PathProgramCache]: Analyzing trace with hash 261307904, now seen corresponding path program 1 times [2021-11-20 23:15:33,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:33,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491076840] [2021-11-20 23:15:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:33,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2021-11-20 23:15:33,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:33,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491076840] [2021-11-20 23:15:33,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491076840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:33,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:33,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:15:33,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115696097] [2021-11-20 23:15:33,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:33,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:15:33,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:15:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:33,793 INFO L87 Difference]: Start difference. First operand 20493 states and 28181 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 23:15:38,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:41,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:42,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:44,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:48,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:53,638 INFO L93 Difference]: Finished difference Result 35751 states and 49333 transitions. [2021-11-20 23:15:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:15:53,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 215 [2021-11-20 23:15:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:53,765 INFO L225 Difference]: With dead ends: 35751 [2021-11-20 23:15:53,765 INFO L226 Difference]: Without dead ends: 35749 [2021-11-20 23:15:53,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:15:53,779 INFO L933 BasicCegarLoop]: 2766 mSDtfsCounter, 2352 mSDsluCounter, 8579 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 10423 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:53,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2360 Valid, 10423 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1252 Invalid, 2 Unknown, 0 Unchecked, 18.6s Time] [2021-11-20 23:15:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35749 states. [2021-11-20 23:15:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35749 to 35741. [2021-11-20 23:15:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35741 states, 20668 states have (on average 1.2287594348751694) internal successors, (25396), 21283 states have internal predecessors, (25396), 11885 states have call successors, (11885), 3272 states have call predecessors, (11885), 3185 states have return successors, (12044), 11568 states have call predecessors, (12044), 11876 states have call successors, (12044) [2021-11-20 23:15:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35741 states to 35741 states and 49325 transitions. [2021-11-20 23:15:55,907 INFO L78 Accepts]: Start accepts. Automaton has 35741 states and 49325 transitions. Word has length 215 [2021-11-20 23:15:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:55,908 INFO L470 AbstractCegarLoop]: Abstraction has 35741 states and 49325 transitions. [2021-11-20 23:15:55,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 23:15:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 35741 states and 49325 transitions. [2021-11-20 23:15:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-20 23:15:55,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:55,915 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 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, 1, 1, 1, 1, 1] [2021-11-20 23:15:55,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:15:55,916 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:15:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1396351913, now seen corresponding path program 1 times [2021-11-20 23:15:55,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:55,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775959103] [2021-11-20 23:15:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:55,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-11-20 23:15:56,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:56,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775959103] [2021-11-20 23:15:56,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775959103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:56,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:56,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:15:56,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78234653] [2021-11-20 23:15:56,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:56,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:15:56,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:15:56,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:56,256 INFO L87 Difference]: Start difference. First operand 35741 states and 49325 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 23:16:01,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:03,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:05,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:07,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:12,565 INFO L93 Difference]: Finished difference Result 35755 states and 49338 transitions. [2021-11-20 23:16:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:16:12,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 229 [2021-11-20 23:16:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:12,705 INFO L225 Difference]: With dead ends: 35755 [2021-11-20 23:16:12,705 INFO L226 Difference]: Without dead ends: 35753 [2021-11-20 23:16:12,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:16:12,719 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:12,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 947 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2021-11-20 23:16:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35753 states. [2021-11-20 23:16:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35753 to 35753. [2021-11-20 23:16:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35753 states, 20677 states have (on average 1.2286598636165789) internal successors, (25405), 21292 states have internal predecessors, (25405), 11885 states have call successors, (11885), 3275 states have call predecessors, (11885), 3188 states have return successors, (12044), 11568 states have call predecessors, (12044), 11876 states have call successors, (12044) [2021-11-20 23:16:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35753 states to 35753 states and 49334 transitions. [2021-11-20 23:16:14,858 INFO L78 Accepts]: Start accepts. Automaton has 35753 states and 49334 transitions. Word has length 229 [2021-11-20 23:16:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:14,859 INFO L470 AbstractCegarLoop]: Abstraction has 35753 states and 49334 transitions. [2021-11-20 23:16:14,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 23:16:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 35753 states and 49334 transitions. [2021-11-20 23:16:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-20 23:16:14,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:14,884 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:14,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:16:14,884 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:16:14,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1872282176, now seen corresponding path program 1 times [2021-11-20 23:16:14,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:14,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356045090] [2021-11-20 23:16:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:14,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2021-11-20 23:16:15,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356045090] [2021-11-20 23:16:15,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356045090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:15,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:15,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:16:15,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60908462] [2021-11-20 23:16:15,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:15,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:16:15,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:15,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:16:15,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:16:15,345 INFO L87 Difference]: Start difference. First operand 35753 states and 49334 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 23:16:20,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:22,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:26,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:30,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:31,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:34,324 INFO L93 Difference]: Finished difference Result 35766 states and 49343 transitions. [2021-11-20 23:16:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:16:34,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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 225 [2021-11-20 23:16:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:34,441 INFO L225 Difference]: With dead ends: 35766 [2021-11-20 23:16:34,442 INFO L226 Difference]: Without dead ends: 35764 [2021-11-20 23:16:34,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:16:34,457 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 1579 mSDsluCounter, 8481 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:34,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 10234 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1294 Invalid, 2 Unknown, 0 Unchecked, 17.6s Time] [2021-11-20 23:16:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35764 states. [2021-11-20 23:16:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35764 to 35757. [2021-11-20 23:16:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35757 states, 20680 states have (on average 1.2286266924564797) internal successors, (25408), 21295 states have internal predecessors, (25408), 11885 states have call successors, (11885), 3276 states have call predecessors, (11885), 3189 states have return successors, (12044), 11568 states have call predecessors, (12044), 11876 states have call successors, (12044) [2021-11-20 23:16:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35757 states to 35757 states and 49337 transitions. [2021-11-20 23:16:36,494 INFO L78 Accepts]: Start accepts. Automaton has 35757 states and 49337 transitions. Word has length 225 [2021-11-20 23:16:36,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:36,495 INFO L470 AbstractCegarLoop]: Abstraction has 35757 states and 49337 transitions. [2021-11-20 23:16:36,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 23:16:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 35757 states and 49337 transitions. [2021-11-20 23:16:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-20 23:16:36,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:36,501 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:36,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:16:36,502 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:16:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1325232983, now seen corresponding path program 1 times [2021-11-20 23:16:36,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:36,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343856502] [2021-11-20 23:16:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:36,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2021-11-20 23:16:36,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:36,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343856502] [2021-11-20 23:16:36,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343856502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:36,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:36,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:16:36,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183794541] [2021-11-20 23:16:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:36,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:16:36,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:16:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:16:36,780 INFO L87 Difference]: Start difference. First operand 35757 states and 49337 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 23:16:38,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:42,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:45,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:47,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:52,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:55,552 INFO L93 Difference]: Finished difference Result 35770 states and 49346 transitions. [2021-11-20 23:16:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:16:55,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 239 [2021-11-20 23:16:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:55,690 INFO L225 Difference]: With dead ends: 35770 [2021-11-20 23:16:55,690 INFO L226 Difference]: Without dead ends: 35768 [2021-11-20 23:16:55,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:16:55,703 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 1575 mSDsluCounter, 8481 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:55,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 10234 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1294 Invalid, 2 Unknown, 0 Unchecked, 17.4s Time] [2021-11-20 23:16:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35768 states. [2021-11-20 23:16:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35768 to 35761. [2021-11-20 23:16:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35761 states, 20683 states have (on average 1.2285935309191123) internal successors, (25411), 21298 states have internal predecessors, (25411), 11885 states have call successors, (11885), 3277 states have call predecessors, (11885), 3190 states have return successors, (12044), 11568 states have call predecessors, (12044), 11876 states have call successors, (12044) [2021-11-20 23:16:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35761 states to 35761 states and 49340 transitions. [2021-11-20 23:16:57,973 INFO L78 Accepts]: Start accepts. Automaton has 35761 states and 49340 transitions. Word has length 239 [2021-11-20 23:16:57,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:57,974 INFO L470 AbstractCegarLoop]: Abstraction has 35761 states and 49340 transitions. [2021-11-20 23:16:57,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 23:16:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 35761 states and 49340 transitions. [2021-11-20 23:16:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-20 23:16:57,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:57,980 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:57,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:16:57,981 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:16:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:57,982 INFO L85 PathProgramCache]: Analyzing trace with hash -537173690, now seen corresponding path program 1 times [2021-11-20 23:16:57,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:57,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334944489] [2021-11-20 23:16:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:57,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-20 23:16:58,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:58,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334944489] [2021-11-20 23:16:58,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334944489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:58,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:58,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:16:58,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887546251] [2021-11-20 23:16:58,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:58,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:16:58,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:16:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:16:58,213 INFO L87 Difference]: Start difference. First operand 35761 states and 49340 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 23:17:03,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:05,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:07,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:10,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:13,535 INFO L93 Difference]: Finished difference Result 82526 states and 113864 transitions. [2021-11-20 23:17:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:13,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 243 [2021-11-20 23:17:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:13,706 INFO L225 Difference]: With dead ends: 82526 [2021-11-20 23:17:13,707 INFO L226 Difference]: Without dead ends: 46848 [2021-11-20 23:17:14,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:14,002 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 1562 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 5644 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:14,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 5644 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 867 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2021-11-20 23:17:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46848 states. [2021-11-20 23:17:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46848 to 46675. [2021-11-20 23:17:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46675 states, 27212 states have (on average 1.2323239747170367) internal successors, (33534), 28009 states have internal predecessors, (33534), 15219 states have call successors, (15219), 4340 states have call predecessors, (15219), 4241 states have return successors, (15382), 14814 states have call predecessors, (15382), 15210 states have call successors, (15382) [2021-11-20 23:17:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46675 states to 46675 states and 64135 transitions. [2021-11-20 23:17:17,265 INFO L78 Accepts]: Start accepts. Automaton has 46675 states and 64135 transitions. Word has length 243 [2021-11-20 23:17:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:17,281 INFO L470 AbstractCegarLoop]: Abstraction has 46675 states and 64135 transitions. [2021-11-20 23:17:17,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 23:17:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 46675 states and 64135 transitions. [2021-11-20 23:17:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-20 23:17:17,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:17,285 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:17,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:17:17,286 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash 25181568, now seen corresponding path program 1 times [2021-11-20 23:17:17,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:17,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332193489] [2021-11-20 23:17:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:17,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2021-11-20 23:17:17,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:17,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332193489] [2021-11-20 23:17:17,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332193489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:17,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:17,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:17:17,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116797211] [2021-11-20 23:17:17,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:17,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:17:17,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:17:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:17:17,611 INFO L87 Difference]: Start difference. First operand 46675 states and 64135 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:17:22,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:23,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:25,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:27,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:32,824 INFO L93 Difference]: Finished difference Result 46689 states and 64148 transitions. [2021-11-20 23:17:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:17:32,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 235 [2021-11-20 23:17:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:32,974 INFO L225 Difference]: With dead ends: 46689 [2021-11-20 23:17:32,974 INFO L226 Difference]: Without dead ends: 46687 [2021-11-20 23:17:32,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:17:32,991 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:32,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2439 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 947 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2021-11-20 23:17:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46687 states. [2021-11-20 23:17:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46687 to 46687. [2021-11-20 23:17:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46687 states, 27221 states have (on average 1.2322471621174829) internal successors, (33543), 28018 states have internal predecessors, (33543), 15219 states have call successors, (15219), 4343 states have call predecessors, (15219), 4244 states have return successors, (15382), 14814 states have call predecessors, (15382), 15210 states have call successors, (15382) [2021-11-20 23:17:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46687 states to 46687 states and 64144 transitions. [2021-11-20 23:17:36,154 INFO L78 Accepts]: Start accepts. Automaton has 46687 states and 64144 transitions. Word has length 235 [2021-11-20 23:17:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:36,155 INFO L470 AbstractCegarLoop]: Abstraction has 46687 states and 64144 transitions. [2021-11-20 23:17:36,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:17:36,155 INFO L276 IsEmpty]: Start isEmpty. Operand 46687 states and 64144 transitions. [2021-11-20 23:17:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-20 23:17:36,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:36,159 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:36,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:17:36,160 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash -718627904, now seen corresponding path program 1 times [2021-11-20 23:17:36,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:36,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904693881] [2021-11-20 23:17:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:36,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2021-11-20 23:17:36,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:36,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904693881] [2021-11-20 23:17:36,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904693881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:36,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:36,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:17:36,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645990072] [2021-11-20 23:17:36,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:36,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:17:36,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:17:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:17:36,420 INFO L87 Difference]: Start difference. First operand 46687 states and 64144 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 23:17:41,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:42,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:44,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:47,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:52,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:52,898 INFO L93 Difference]: Finished difference Result 46701 states and 64157 transitions. [2021-11-20 23:17:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:17:52,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 240 [2021-11-20 23:17:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:53,118 INFO L225 Difference]: With dead ends: 46701 [2021-11-20 23:17:53,119 INFO L226 Difference]: Without dead ends: 46699 [2021-11-20 23:17:53,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:17:53,287 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:53,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2021-11-20 23:17:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46699 states. [2021-11-20 23:17:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46699 to 46699. [2021-11-20 23:17:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46699 states, 27230 states have (on average 1.2321704002937937) internal successors, (33552), 28027 states have internal predecessors, (33552), 15219 states have call successors, (15219), 4346 states have call predecessors, (15219), 4247 states have return successors, (15382), 14814 states have call predecessors, (15382), 15210 states have call successors, (15382) [2021-11-20 23:17:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46699 states to 46699 states and 64153 transitions. [2021-11-20 23:17:56,142 INFO L78 Accepts]: Start accepts. Automaton has 46699 states and 64153 transitions. Word has length 240 [2021-11-20 23:17:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:56,142 INFO L470 AbstractCegarLoop]: Abstraction has 46699 states and 64153 transitions. [2021-11-20 23:17:56,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 23:17:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 46699 states and 64153 transitions. [2021-11-20 23:17:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-20 23:17:56,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:56,147 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:56,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 23:17:56,147 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 544793865, now seen corresponding path program 1 times [2021-11-20 23:17:56,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:56,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648824622] [2021-11-20 23:17:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:56,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-20 23:17:56,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:56,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648824622] [2021-11-20 23:17:56,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648824622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:56,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:56,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:17:56,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69063738] [2021-11-20 23:17:56,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:56,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:17:56,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:17:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:17:56,410 INFO L87 Difference]: Start difference. First operand 46699 states and 64153 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-20 23:18:02,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:10,340 INFO L93 Difference]: Finished difference Result 50661 states and 68924 transitions. [2021-11-20 23:18:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:18:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 254 [2021-11-20 23:18:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:10,577 INFO L225 Difference]: With dead ends: 50661 [2021-11-20 23:18:10,578 INFO L226 Difference]: Without dead ends: 50659 [2021-11-20 23:18:10,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:18:10,605 INFO L933 BasicCegarLoop]: 2206 mSDtfsCounter, 2430 mSDsluCounter, 5117 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 6682 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:10,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2434 Valid, 6682 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 971 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2021-11-20 23:18:10,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50659 states. [2021-11-20 23:18:14,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50659 to 50491. [2021-11-20 23:18:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50491 states, 29507 states have (on average 1.2327583285322128) internal successors, (36375), 30388 states have internal predecessors, (36375), 16101 states have call successors, (16101), 4979 states have call predecessors, (16101), 4880 states have return successors, (16264), 15612 states have call predecessors, (16264), 16092 states have call successors, (16264) [2021-11-20 23:18:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50491 states to 50491 states and 68740 transitions. [2021-11-20 23:18:14,250 INFO L78 Accepts]: Start accepts. Automaton has 50491 states and 68740 transitions. Word has length 254 [2021-11-20 23:18:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:14,251 INFO L470 AbstractCegarLoop]: Abstraction has 50491 states and 68740 transitions. [2021-11-20 23:18:14,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-20 23:18:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 50491 states and 68740 transitions. [2021-11-20 23:18:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-20 23:18:14,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:14,255 INFO L514 BasicCegarLoop]: trace histogram [17, 14, 13, 13, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:14,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 23:18:14,256 INFO L402 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)] === [2021-11-20 23:18:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1680825472, now seen corresponding path program 1 times [2021-11-20 23:18:14,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:14,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703211975] [2021-11-20 23:18:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:14,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2021-11-20 23:18:14,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:14,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703211975] [2021-11-20 23:18:14,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703211975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:14,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:14,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:18:14,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748464612] [2021-11-20 23:18:14,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:14,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:18:14,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:18:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:18:14,506 INFO L87 Difference]: Start difference. First operand 50491 states and 68740 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-20 23:18:20,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:22,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:29,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:30,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:36,788 INFO L93 Difference]: Finished difference Result 90718 states and 124019 transitions. [2021-11-20 23:18:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:18:36,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 250 [2021-11-20 23:18:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:37,126 INFO L225 Difference]: With dead ends: 90718 [2021-11-20 23:18:37,126 INFO L226 Difference]: Without dead ends: 90714 [2021-11-20 23:18:37,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:18:37,160 INFO L933 BasicCegarLoop]: 3149 mSDtfsCounter, 2133 mSDsluCounter, 9499 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 11538 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:37,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2134 Valid, 11538 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1538 Invalid, 2 Unknown, 0 Unchecked, 18.4s Time] [2021-11-20 23:18:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90714 states. [2021-11-20 23:18:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90714 to 90664. [2021-11-20 23:18:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90664 states, 53286 states have (on average 1.238130090455279) internal successors, (65975), 54980 states have internal predecessors, (65975), 28811 states have call successors, (28811), 8826 states have call predecessors, (28811), 8564 states have return successors, (29180), 27690 states have call predecessors, (29180), 28796 states have call successors, (29180) [2021-11-20 23:18:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90664 states to 90664 states and 123966 transitions. [2021-11-20 23:18:43,426 INFO L78 Accepts]: Start accepts. Automaton has 90664 states and 123966 transitions. Word has length 250 [2021-11-20 23:18:43,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:43,426 INFO L470 AbstractCegarLoop]: Abstraction has 90664 states and 123966 transitions. [2021-11-20 23:18:43,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-20 23:18:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 90664 states and 123966 transitions. [2021-11-20 23:18:43,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-20 23:18:43,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:43,431 INFO L514 BasicCegarLoop]: trace histogram [17, 15, 14, 14, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:43,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 23:18:43,432 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:18:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:43,433 INFO L85 PathProgramCache]: Analyzing trace with hash 998325504, now seen corresponding path program 1 times [2021-11-20 23:18:43,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:43,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659501679] [2021-11-20 23:18:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:43,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2021-11-20 23:18:43,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:43,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659501679] [2021-11-20 23:18:43,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659501679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:43,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:43,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:18:43,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752746576] [2021-11-20 23:18:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:43,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:18:43,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:18:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:18:43,727 INFO L87 Difference]: Start difference. First operand 90664 states and 123966 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-20 23:18:49,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:51,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:59,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:04,057 INFO L93 Difference]: Finished difference Result 90671 states and 123970 transitions. [2021-11-20 23:19:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:19:04,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 255 [2021-11-20 23:19:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:04,395 INFO L225 Difference]: With dead ends: 90671 [2021-11-20 23:19:04,395 INFO L226 Difference]: Without dead ends: 90530 [2021-11-20 23:19:04,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:19:04,431 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 1575 mSDsluCounter, 8477 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 10227 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:04,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 10227 Invalid, 1294 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 1290 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2021-11-20 23:19:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90530 states. [2021-11-20 23:19:10,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90530 to 90525. [2021-11-20 23:19:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90525 states, 53227 states have (on average 1.237943149153625) internal successors, (65892), 54898 states have internal predecessors, (65892), 28746 states have call successors, (28746), 8809 states have call predecessors, (28746), 8549 states have return successors, (29118), 27650 states have call predecessors, (29118), 28734 states have call successors, (29118) [2021-11-20 23:19:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90525 states to 90525 states and 123756 transitions. [2021-11-20 23:19:10,639 INFO L78 Accepts]: Start accepts. Automaton has 90525 states and 123756 transitions. Word has length 255 [2021-11-20 23:19:10,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:10,640 INFO L470 AbstractCegarLoop]: Abstraction has 90525 states and 123756 transitions. [2021-11-20 23:19:10,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-20 23:19:10,640 INFO L276 IsEmpty]: Start isEmpty. Operand 90525 states and 123756 transitions. [2021-11-20 23:19:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-20 23:19:10,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:10,650 INFO L514 BasicCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 9, 9, 3, 3, 3, 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] [2021-11-20 23:19:10,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 23:19:10,651 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:19:10,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:10,652 INFO L85 PathProgramCache]: Analyzing trace with hash -592902740, now seen corresponding path program 1 times [2021-11-20 23:19:10,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:10,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154307242] [2021-11-20 23:19:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:10,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2021-11-20 23:19:11,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:11,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154307242] [2021-11-20 23:19:11,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154307242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:11,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:11,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:19:11,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336313776] [2021-11-20 23:19:11,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:11,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:19:11,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:11,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:19:11,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:19:11,057 INFO L87 Difference]: Start difference. First operand 90525 states and 123756 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-20 23:19:15,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:17,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []