./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-atl1e-atl1e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V --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 6757464a5622bb83d03b39d9677b81f434099fef913b81074103632b3c898f25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:06:01,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:06:01,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:06:01,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:06:01,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:06:01,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:06:01,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:06:01,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:06:01,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:06:01,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:06:01,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:06:01,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:06:01,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:06:01,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:06:01,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:06:01,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:06:01,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:06:01,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:06:01,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:06:01,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:06:01,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:06:01,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:06:01,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:06:01,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:06:01,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:06:01,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:06:01,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:06:01,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:06:01,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:06:01,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:06:01,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:06:01,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:06:01,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:06:01,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:06:01,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:06:01,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:06:01,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:06:01,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:06:01,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:06:01,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:06:01,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:06:01,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:06:01,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:06:01,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:06:01,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:06:01,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:06:01,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:06:01,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:06:01,863 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:06:01,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:06:01,863 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:06:01,863 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:06:01,864 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:06:01,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:06:01,864 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:06:01,864 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:06:01,864 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:06:01,865 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:06:01,865 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:06:01,865 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:06:01,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:06:01,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:06:01,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:06:01,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:06:01,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:06:01,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:06:01,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:06:01,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:06:01,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:06:01,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:06:01,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:06:01,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:06:01,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:06:01,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:06:01,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:06:01,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:06:01,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:06:01,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:06:01,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:06:01,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:06:01,871 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6757464a5622bb83d03b39d9677b81f434099fef913b81074103632b3c898f25 [2021-11-23 02:06:02,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:06:02,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:06:02,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:06:02,134 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:06:02,135 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:06:02,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-23 02:06:02,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/data/524915a64/9ca0ad14c7774db5adf6228f8699104b/FLAGbb0d5f178 [2021-11-23 02:06:03,167 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:06:03,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-23 02:06:03,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/data/524915a64/9ca0ad14c7774db5adf6228f8699104b/FLAGbb0d5f178 [2021-11-23 02:06:03,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/data/524915a64/9ca0ad14c7774db5adf6228f8699104b [2021-11-23 02:06:03,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:06:03,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:06:03,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:06:03,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:06:03,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:06:03,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:03" (1/1) ... [2021-11-23 02:06:03,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15016798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:03, skipping insertion in model container [2021-11-23 02:06:03,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:03" (1/1) ... [2021-11-23 02:06:03,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:06:03,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:06:08,721 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463113,463126] [2021-11-23 02:06:08,724 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463282,463295] [2021-11-23 02:06:08,730 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463449,463462] [2021-11-23 02:06:08,731 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463617,463630] [2021-11-23 02:06:08,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:06:08,822 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:06:09,322 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463113,463126] [2021-11-23 02:06:09,323 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463282,463295] [2021-11-23 02:06:09,323 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463449,463462] [2021-11-23 02:06:09,324 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_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463617,463630] [2021-11-23 02:06:09,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:06:09,812 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:06:09,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09 WrapperNode [2021-11-23 02:06:09,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:06:09,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:06:09,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:06:09,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:06:09,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,376 INFO L137 Inliner]: procedures = 625, calls = 3468, calls flagged for inlining = 312, calls inlined = 276, statements flattened = 8002 [2021-11-23 02:06:10,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:06:10,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:06:10,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:06:10,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:06:10,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:06:10,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:06:10,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:06:10,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:06:10,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (1/1) ... [2021-11-23 02:06:10,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:06:10,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:06:10,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:06:10,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4f55a4-b736-44ac-9cd5-e2d13e0c5a8b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:06:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:06:10,874 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:06:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:06:10,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:06:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2021-11-23 02:06:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2021-11-23 02:06:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:06:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:06:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2021-11-23 02:06:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2021-11-23 02:06:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-23 02:06:10,876 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-23 02:06:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:06:10,876 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:06:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_89 [2021-11-23 02:06:10,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_89 [2021-11-23 02:06:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:06:10,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:06:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2021-11-23 02:06:10,877 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2021-11-23 02:06:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-23 02:06:10,877 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-23 02:06:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_78 [2021-11-23 02:06:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_78 [2021-11-23 02:06:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:06:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:06:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-23 02:06:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-23 02:06:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:06:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:06:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 02:06:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 02:06:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:06:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:06:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2021-11-23 02:06:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2021-11-23 02:06:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2021-11-23 02:06:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2021-11-23 02:06:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2021-11-23 02:06:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2021-11-23 02:06:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2021-11-23 02:06:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2021-11-23 02:06:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:06:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:06:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:06:10,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:06:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2021-11-23 02:06:10,882 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2021-11-23 02:06:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:06:10,882 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:06:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 02:06:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 02:06:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:06:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:06:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:06:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:06:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:06:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:06:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2021-11-23 02:06:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2021-11-23 02:06:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:06:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:06:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-23 02:06:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-23 02:06:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:06:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-23 02:06:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-23 02:06:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2021-11-23 02:06:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2021-11-23 02:06:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 02:06:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 02:06:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2021-11-23 02:06:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2021-11-23 02:06:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-23 02:06:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-23 02:06:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:06:10,887 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:06:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:06:10,887 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:06:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:06:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2021-11-23 02:06:10,888 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2021-11-23 02:06:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:06:10,888 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:06:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:06:10,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:06:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2021-11-23 02:06:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2021-11-23 02:06:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:06:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:06:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:06:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:06:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:06:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:06:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:06:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:06:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 02:06:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 02:06:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-23 02:06:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-23 02:06:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:06:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:06:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-23 02:06:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-23 02:06:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:06:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:06:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2021-11-23 02:06:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2021-11-23 02:06:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:06:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:06:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:06:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:06:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2021-11-23 02:06:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2021-11-23 02:06:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:06:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:06:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:06:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2021-11-23 02:06:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2021-11-23 02:06:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:06:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:06:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:06:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:06:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:06:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-23 02:06:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-23 02:06:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:06:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:06:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:06:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:06:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:06:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:06:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-23 02:06:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-23 02:06:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-23 02:06:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-23 02:06:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2021-11-23 02:06:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2021-11-23 02:06:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2021-11-23 02:06:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2021-11-23 02:06:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:06:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:06:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-23 02:06:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-23 02:06:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:06:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:06:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-23 02:06:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-23 02:06:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:06:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:06:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 02:06:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 02:06:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2021-11-23 02:06:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2021-11-23 02:06:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-23 02:06:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-23 02:06:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 02:06:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 02:06:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:06:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:06:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2021-11-23 02:06:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2021-11-23 02:06:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-23 02:06:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-23 02:06:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-23 02:06:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-23 02:06:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:06:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:06:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-23 02:06:10,902 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-23 02:06:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:06:10,902 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:06:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:06:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:06:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:06:10,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:06:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-23 02:06:10,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-23 02:06:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:06:10,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:06:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 02:06:10,904 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 02:06:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-23 02:06:10,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-23 02:06:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-23 02:06:10,904 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-23 02:06:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 02:06:10,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 02:06:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2021-11-23 02:06:10,905 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2021-11-23 02:06:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-23 02:06:10,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-23 02:06:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:06:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:06:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-23 02:06:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-23 02:06:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-23 02:06:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-23 02:06:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-23 02:06:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-23 02:06:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:06:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:06:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:06:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:06:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2021-11-23 02:06:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2021-11-23 02:06:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:06:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:06:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-23 02:06:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-23 02:06:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:06:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:06:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:06:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-23 02:06:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-23 02:06:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:06:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:06:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2021-11-23 02:06:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2021-11-23 02:06:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:06:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2021-11-23 02:06:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2021-11-23 02:06:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2021-11-23 02:06:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2021-11-23 02:06:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 02:06:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 02:06:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2021-11-23 02:06:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2021-11-23 02:06:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:06:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2021-11-23 02:06:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2021-11-23 02:06:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-23 02:06:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-23 02:06:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-23 02:06:10,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-23 02:06:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:06:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:06:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:06:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:06:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:06:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:06:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:06:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:06:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2021-11-23 02:06:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2021-11-23 02:06:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2021-11-23 02:06:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2021-11-23 02:06:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2021-11-23 02:06:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2021-11-23 02:06:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2021-11-23 02:06:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2021-11-23 02:06:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:06:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:06:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-23 02:06:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-23 02:06:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2021-11-23 02:06:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2021-11-23 02:06:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:06:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:06:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-23 02:06:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-23 02:06:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2021-11-23 02:06:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2021-11-23 02:06:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:06:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:06:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:06:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2021-11-23 02:06:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2021-11-23 02:06:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:06:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:06:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2021-11-23 02:06:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2021-11-23 02:06:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2021-11-23 02:06:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2021-11-23 02:06:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2021-11-23 02:06:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2021-11-23 02:06:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:06:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:06:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-23 02:06:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-23 02:06:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2021-11-23 02:06:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2021-11-23 02:06:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 02:06:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 02:06:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2021-11-23 02:06:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2021-11-23 02:06:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-23 02:06:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-23 02:06:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:06:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:06:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 02:06:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 02:06:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-23 02:06:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-23 02:06:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2021-11-23 02:06:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2021-11-23 02:06:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:06:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:06:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 02:06:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 02:06:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2021-11-23 02:06:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2021-11-23 02:06:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-23 02:06:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-23 02:06:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 02:06:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 02:06:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:06:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-23 02:06:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-23 02:06:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:06:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:06:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2021-11-23 02:06:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2021-11-23 02:06:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2021-11-23 02:06:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2021-11-23 02:06:12,038 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:06:12,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:06:12,430 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:06:25,181 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:06:25,356 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:06:27,327 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:06:27,328 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:06:27,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:27 BoogieIcfgContainer [2021-11-23 02:06:27,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:06:27,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:06:27,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:06:27,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:06:27,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:06:03" (1/3) ... [2021-11-23 02:06:27,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd2f525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:27, skipping insertion in model container [2021-11-23 02:06:27,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:09" (2/3) ... [2021-11-23 02:06:27,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd2f525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:27, skipping insertion in model container [2021-11-23 02:06:27,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:27" (3/3) ... [2021-11-23 02:06:27,342 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-23 02:06:27,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:06:27,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 02:06:27,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:06:27,435 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 [2021-11-23 02:06:27,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 02:06:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 2192 states, 1279 states have (on average 1.2791243158717749) internal successors, (1636), 1307 states have internal predecessors, (1636), 761 states have call successors, (761), 149 states have call predecessors, (761), 148 states have return successors, (755), 753 states have call predecessors, (755), 755 states have call successors, (755) [2021-11-23 02:06:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 02:06:27,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:27,526 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:06:27,526 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:06:27,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:27,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1010132374, now seen corresponding path program 1 times [2021-11-23 02:06:27,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:27,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710787910] [2021-11-23 02:06:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:27,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-23 02:06:28,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:28,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710787910] [2021-11-23 02:06:28,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710787910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:28,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:06:28,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:06:28,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644440410] [2021-11-23 02:06:28,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:28,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:06:28,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:06:28,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:06:28,383 INFO L87 Difference]: Start difference. First operand has 2192 states, 1279 states have (on average 1.2791243158717749) internal successors, (1636), 1307 states have internal predecessors, (1636), 761 states have call successors, (761), 149 states have call predecessors, (761), 148 states have return successors, (755), 753 states have call predecessors, (755), 755 states have call successors, (755) 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:06:30,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:34,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:38,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:40,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:06:41,408 INFO L93 Difference]: Finished difference Result 6297 states and 9146 transitions. [2021-11-23 02:06:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:06:41,412 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2021-11-23 02:06:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:06:41,505 INFO L225 Difference]: With dead ends: 6297 [2021-11-23 02:06:41,505 INFO L226 Difference]: Without dead ends: 4119 [2021-11-23 02:06:41,533 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 [2021-11-23 02:06:41,538 INFO L933 BasicCegarLoop]: 3457 mSDtfsCounter, 2868 mSDsluCounter, 3053 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:06:41,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2874 Valid, 6140 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 758 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2021-11-23 02:06:41,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-11-23 02:06:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 4085. [2021-11-23 02:06:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 2403 states have (on average 1.2775697045359966) internal successors, (3070), 2463 states have internal predecessors, (3070), 1397 states have call successors, (1397), 287 states have call predecessors, (1397), 281 states have return successors, (1404), 1373 states have call predecessors, (1404), 1393 states have call successors, (1404) [2021-11-23 02:06:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 5871 transitions. [2021-11-23 02:06:42,073 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 5871 transitions. Word has length 161 [2021-11-23 02:06:42,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:06:42,077 INFO L470 AbstractCegarLoop]: Abstraction has 4085 states and 5871 transitions. [2021-11-23 02:06:42,078 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:06:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 5871 transitions. [2021-11-23 02:06:42,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 02:06:42,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:42,100 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:06:42,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:06:42,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:06:42,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1581564071, now seen corresponding path program 1 times [2021-11-23 02:06:42,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:42,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780564767] [2021-11-23 02:06:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:42,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-23 02:06:42,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:42,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780564767] [2021-11-23 02:06:42,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780564767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:42,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:06:42,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:06:42,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185630212] [2021-11-23 02:06:42,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:42,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:06:42,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:06:42,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:06:42,460 INFO L87 Difference]: Start difference. First operand 4085 states and 5871 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:06:44,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:49,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:52,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:06:53,562 INFO L93 Difference]: Finished difference Result 12002 states and 17237 transitions. [2021-11-23 02:06:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:06:53,563 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2021-11-23 02:06:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:06:53,648 INFO L225 Difference]: With dead ends: 12002 [2021-11-23 02:06:53,648 INFO L226 Difference]: Without dead ends: 7946 [2021-11-23 02:06:53,679 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 [2021-11-23 02:06:53,680 INFO L933 BasicCegarLoop]: 3412 mSDtfsCounter, 2850 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 6120 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:06:53,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2850 Valid, 6120 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 782 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2021-11-23 02:06:53,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2021-11-23 02:06:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 7938. [2021-11-23 02:06:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7938 states, 4695 states have (on average 1.2775292864749734) internal successors, (5998), 4806 states have internal predecessors, (5998), 2687 states have call successors, (2687), 563 states have call predecessors, (2687), 552 states have return successors, (2705), 2645 states have call predecessors, (2705), 2683 states have call successors, (2705) [2021-11-23 02:06:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7938 states to 7938 states and 11390 transitions. [2021-11-23 02:06:54,412 INFO L78 Accepts]: Start accepts. Automaton has 7938 states and 11390 transitions. Word has length 161 [2021-11-23 02:06:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:06:54,413 INFO L470 AbstractCegarLoop]: Abstraction has 7938 states and 11390 transitions. [2021-11-23 02:06:54,415 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:06:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 7938 states and 11390 transitions. [2021-11-23 02:06:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-23 02:06:54,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:54,420 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:06:54,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:06:54,421 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:06:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1208042098, now seen corresponding path program 1 times [2021-11-23 02:06:54,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:54,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672771063] [2021-11-23 02:06:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:54,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-23 02:06:54,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:54,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672771063] [2021-11-23 02:06:54,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672771063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:54,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:06:54,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:06:54,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701880705] [2021-11-23 02:06:54,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:54,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:06:54,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:54,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:06:54,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:06:54,679 INFO L87 Difference]: Start difference. First operand 7938 states and 11390 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:06:56,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:01,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:02,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:04,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:07,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:08,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:08,148 INFO L93 Difference]: Finished difference Result 23483 states and 33748 transitions. [2021-11-23 02:07:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:07:08,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 174 [2021-11-23 02:07:08,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:08,305 INFO L225 Difference]: With dead ends: 23483 [2021-11-23 02:07:08,305 INFO L226 Difference]: Without dead ends: 15574 [2021-11-23 02:07:08,357 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 [2021-11-23 02:07:08,358 INFO L933 BasicCegarLoop]: 3653 mSDtfsCounter, 2872 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2878 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:08,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2878 Valid, 6362 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 793 Invalid, 4 Unknown, 0 Unchecked, 12.9s Time] [2021-11-23 02:07:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15574 states. [2021-11-23 02:07:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15574 to 15534. [2021-11-23 02:07:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15534 states, 9204 states have (on average 1.2778139939156887) internal successors, (11761), 9429 states have internal predecessors, (11761), 5244 states have call successors, (5244), 1111 states have call predecessors, (5244), 1082 states have return successors, (5333), 5139 states have call predecessors, (5333), 5240 states have call successors, (5333) [2021-11-23 02:07:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15534 states to 15534 states and 22338 transitions. [2021-11-23 02:07:09,529 INFO L78 Accepts]: Start accepts. Automaton has 15534 states and 22338 transitions. Word has length 174 [2021-11-23 02:07:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:09,532 INFO L470 AbstractCegarLoop]: Abstraction has 15534 states and 22338 transitions. [2021-11-23 02:07:09,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:07:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 15534 states and 22338 transitions. [2021-11-23 02:07:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-23 02:07:09,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:09,539 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2021-11-23 02:07:09,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:07:09,540 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:07:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash -370441076, now seen corresponding path program 1 times [2021-11-23 02:07:09,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:09,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179205464] [2021-11-23 02:07:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:09,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2021-11-23 02:07:09,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:09,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179205464] [2021-11-23 02:07:09,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179205464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:09,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:09,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:07:09,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134544436] [2021-11-23 02:07:09,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:09,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:07:09,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:09,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:07:09,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:07:09,825 INFO L87 Difference]: Start difference. First operand 15534 states and 22338 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:07:12,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:15,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:17,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:20,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:23,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:23,308 INFO L93 Difference]: Finished difference Result 35187 states and 50560 transitions. [2021-11-23 02:07:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:07:23,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 179 [2021-11-23 02:07:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:23,428 INFO L225 Difference]: With dead ends: 35187 [2021-11-23 02:07:23,428 INFO L226 Difference]: Without dead ends: 19682 [2021-11-23 02:07:23,515 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 [2021-11-23 02:07:23,520 INFO L933 BasicCegarLoop]: 3651 mSDtfsCounter, 2915 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 6390 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:23,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2915 Valid, 6390 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 803 Invalid, 4 Unknown, 0 Unchecked, 12.9s Time] [2021-11-23 02:07:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19682 states. [2021-11-23 02:07:24,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19682 to 19641. [2021-11-23 02:07:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19641 states, 11620 states have (on average 1.2765060240963855) internal successors, (14833), 11914 states have internal predecessors, (14833), 6629 states have call successors, (6629), 1419 states have call predecessors, (6629), 1388 states have return successors, (6739), 6493 states have call predecessors, (6739), 6625 states have call successors, (6739) [2021-11-23 02:07:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19641 states to 19641 states and 28201 transitions. [2021-11-23 02:07:25,039 INFO L78 Accepts]: Start accepts. Automaton has 19641 states and 28201 transitions. Word has length 179 [2021-11-23 02:07:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:25,040 INFO L470 AbstractCegarLoop]: Abstraction has 19641 states and 28201 transitions. [2021-11-23 02:07:25,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:07:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 19641 states and 28201 transitions. [2021-11-23 02:07:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-23 02:07:25,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:25,046 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:07:25,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:07:25,047 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:07:25,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash 745362516, now seen corresponding path program 1 times [2021-11-23 02:07:25,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:25,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839908959] [2021-11-23 02:07:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:25,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-23 02:07:25,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:25,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839908959] [2021-11-23 02:07:25,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839908959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:25,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:25,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:07:25,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622891004] [2021-11-23 02:07:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:25,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:07:25,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:07:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:07:25,275 INFO L87 Difference]: Start difference. First operand 19641 states and 28201 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:07:27,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:29,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:31,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:34,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:37,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:40,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:40,357 INFO L93 Difference]: Finished difference Result 47547 states and 67938 transitions. [2021-11-23 02:07:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:07:40,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 183 [2021-11-23 02:07:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:40,540 INFO L225 Difference]: With dead ends: 47547 [2021-11-23 02:07:40,541 INFO L226 Difference]: Without dead ends: 27935 [2021-11-23 02:07:40,621 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 [2021-11-23 02:07:40,622 INFO L933 BasicCegarLoop]: 3212 mSDtfsCounter, 1945 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 5889 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:40,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1945 Valid, 5889 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 811 Invalid, 4 Unknown, 0 Unchecked, 14.4s Time] [2021-11-23 02:07:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27935 states. [2021-11-23 02:07:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27935 to 27903. [2021-11-23 02:07:42,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27903 states, 16431 states have (on average 1.2654129389568498) internal successors, (20792), 16888 states have internal predecessors, (20792), 9354 states have call successors, (9354), 2175 states have call predecessors, (9354), 2114 states have return successors, (9540), 9108 states have call predecessors, (9540), 9350 states have call successors, (9540) [2021-11-23 02:07:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27903 states to 27903 states and 39686 transitions. [2021-11-23 02:07:42,665 INFO L78 Accepts]: Start accepts. Automaton has 27903 states and 39686 transitions. Word has length 183 [2021-11-23 02:07:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:42,666 INFO L470 AbstractCegarLoop]: Abstraction has 27903 states and 39686 transitions. [2021-11-23 02:07:42,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:07:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 27903 states and 39686 transitions. [2021-11-23 02:07:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-23 02:07:42,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:42,673 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:07:42,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:07:42,674 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:07:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:42,675 INFO L85 PathProgramCache]: Analyzing trace with hash -77287633, now seen corresponding path program 1 times [2021-11-23 02:07:42,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:42,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322041539] [2021-11-23 02:07:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:42,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2021-11-23 02:07:43,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:43,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322041539] [2021-11-23 02:07:43,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322041539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:43,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:43,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:07:43,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796094386] [2021-11-23 02:07:43,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:43,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:07:43,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:07:43,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:07:43,209 INFO L87 Difference]: Start difference. First operand 27903 states and 39686 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, (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) [2021-11-23 02:07:46,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:51,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:53,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:55,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:56,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:58,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:03,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:04,495 INFO L93 Difference]: Finished difference Result 37632 states and 53337 transitions. [2021-11-23 02:08:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:08:04,496 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, (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 203 [2021-11-23 02:08:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:04,800 INFO L225 Difference]: With dead ends: 37632 [2021-11-23 02:08:04,800 INFO L226 Difference]: Without dead ends: 37630 [2021-11-23 02:08:04,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:08:04,823 INFO L933 BasicCegarLoop]: 3228 mSDtfsCounter, 1870 mSDsluCounter, 10286 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 12367 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:04,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 12367 Invalid, 1560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1553 Invalid, 5 Unknown, 0 Unchecked, 20.0s Time] [2021-11-23 02:08:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37630 states. [2021-11-23 02:08:06,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37630 to 37624. [2021-11-23 02:08:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37624 states, 22095 states have (on average 1.2611903145508034) internal successors, (27866), 22726 states have internal predecessors, (27866), 12599 states have call successors, (12599), 3016 states have call predecessors, (12599), 2926 states have return successors, (12867), 12246 states have call predecessors, (12867), 12591 states have call successors, (12867) [2021-11-23 02:08:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37624 states to 37624 states and 53332 transitions. [2021-11-23 02:08:07,401 INFO L78 Accepts]: Start accepts. Automaton has 37624 states and 53332 transitions. Word has length 203 [2021-11-23 02:08:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:07,402 INFO L470 AbstractCegarLoop]: Abstraction has 37624 states and 53332 transitions. [2021-11-23 02:08:07,403 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, (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) [2021-11-23 02:08:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 37624 states and 53332 transitions. [2021-11-23 02:08:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-23 02:08:07,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:07,411 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:07,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:08:07,411 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:08:07,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1539467665, now seen corresponding path program 1 times [2021-11-23 02:08:07,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:07,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861393983] [2021-11-23 02:08:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:07,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2021-11-23 02:08:07,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:07,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861393983] [2021-11-23 02:08:07,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861393983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:07,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:07,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:08:07,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108899905] [2021-11-23 02:08:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:07,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:08:07,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:08:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:08:07,936 INFO L87 Difference]: Start difference. First operand 37624 states and 53332 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:08:10,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:13,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:17,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:19,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:22,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:27,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:27,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:27,839 INFO L93 Difference]: Finished difference Result 37796 states and 53545 transitions. [2021-11-23 02:08:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:08:27,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 208 [2021-11-23 02:08:27,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:28,050 INFO L225 Difference]: With dead ends: 37796 [2021-11-23 02:08:28,051 INFO L226 Difference]: Without dead ends: 37794 [2021-11-23 02:08:28,074 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 [2021-11-23 02:08:28,075 INFO L933 BasicCegarLoop]: 3209 mSDtfsCounter, 1869 mSDsluCounter, 10241 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 12304 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:28,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1883 Valid, 12304 Invalid, 1558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1550 Invalid, 6 Unknown, 0 Unchecked, 19.0s Time] [2021-11-23 02:08:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37794 states. [2021-11-23 02:08:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37794 to 37788. [2021-11-23 02:08:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37788 states, 22189 states have (on average 1.2605344990761187) internal successors, (27970), 22822 states have internal predecessors, (27970), 12651 states have call successors, (12651), 3032 states have call predecessors, (12651), 2944 states have return successors, (12919), 12298 states have call predecessors, (12919), 12643 states have call successors, (12919) [2021-11-23 02:08:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37788 states to 37788 states and 53540 transitions. [2021-11-23 02:08:30,208 INFO L78 Accepts]: Start accepts. Automaton has 37788 states and 53540 transitions. Word has length 208 [2021-11-23 02:08:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:30,209 INFO L470 AbstractCegarLoop]: Abstraction has 37788 states and 53540 transitions. [2021-11-23 02:08:30,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:08:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 37788 states and 53540 transitions. [2021-11-23 02:08:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-23 02:08:30,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:30,219 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 3, 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] [2021-11-23 02:08:30,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:08:30,220 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:08:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1597001455, now seen corresponding path program 1 times [2021-11-23 02:08:30,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:30,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205302807] [2021-11-23 02:08:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:30,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2021-11-23 02:08:30,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:30,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205302807] [2021-11-23 02:08:30,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205302807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:30,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:30,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:08:30,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205282734] [2021-11-23 02:08:30,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:30,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:08:30,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:08:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:08:30,758 INFO L87 Difference]: Start difference. First operand 37788 states and 53540 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:08:33,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:34,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:36,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:39,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:41,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:43,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:45,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:49,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:53,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:55,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:57,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:59,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:01,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:03,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:04,905 INFO L93 Difference]: Finished difference Result 63213 states and 89768 transitions. [2021-11-23 02:09:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:09:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 213 [2021-11-23 02:09:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:05,344 INFO L225 Difference]: With dead ends: 63213 [2021-11-23 02:09:05,344 INFO L226 Difference]: Without dead ends: 63211 [2021-11-23 02:09:05,377 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 [2021-11-23 02:09:05,378 INFO L933 BasicCegarLoop]: 3524 mSDtfsCounter, 3055 mSDsluCounter, 10884 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 13249 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:05,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3074 Valid, 13249 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1562 Invalid, 11 Unknown, 0 Unchecked, 32.6s Time] [2021-11-23 02:09:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63211 states. [2021-11-23 02:09:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63211 to 63202. [2021-11-23 02:09:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63202 states, 37159 states have (on average 1.2635700637799725) internal successors, (46953), 38211 states have internal predecessors, (46953), 21179 states have call successors, (21179), 5007 states have call predecessors, (21179), 4860 states have return successors, (21628), 20590 states have call predecessors, (21628), 21167 states have call successors, (21628) [2021-11-23 02:09:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63202 states to 63202 states and 89760 transitions. [2021-11-23 02:09:08,694 INFO L78 Accepts]: Start accepts. Automaton has 63202 states and 89760 transitions. Word has length 213 [2021-11-23 02:09:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:08,697 INFO L470 AbstractCegarLoop]: Abstraction has 63202 states and 89760 transitions. [2021-11-23 02:09:08,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:09:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 63202 states and 89760 transitions. [2021-11-23 02:09:08,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-23 02:09:08,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:08,717 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:08,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:09:08,717 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:09:08,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash 613989026, now seen corresponding path program 1 times [2021-11-23 02:09:08,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:08,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865215255] [2021-11-23 02:09:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:08,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-23 02:09:09,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:09,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865215255] [2021-11-23 02:09:09,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865215255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:09,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:09,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:09:09,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173742973] [2021-11-23 02:09:09,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:09,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:09:09,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:09:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:09,339 INFO L87 Difference]: Start difference. First operand 63202 states and 89760 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2021-11-23 02:09:12,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:14,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:18,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:21,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:27,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:28,233 INFO L93 Difference]: Finished difference Result 63214 states and 89768 transitions. [2021-11-23 02:09:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:09:28,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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 222 [2021-11-23 02:09:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:28,654 INFO L225 Difference]: With dead ends: 63214 [2021-11-23 02:09:28,655 INFO L226 Difference]: Without dead ends: 63212 [2021-11-23 02:09:28,679 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 [2021-11-23 02:09:28,680 INFO L933 BasicCegarLoop]: 3209 mSDtfsCounter, 1868 mSDsluCounter, 10240 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 12304 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:28,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 12304 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1550 Invalid, 5 Unknown, 0 Unchecked, 17.3s Time] [2021-11-23 02:09:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63212 states. [2021-11-23 02:09:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63212 to 63206. [2021-11-23 02:09:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63206 states, 37162 states have (on average 1.2635487863947044) internal successors, (46956), 38214 states have internal predecessors, (46956), 21179 states have call successors, (21179), 5008 states have call predecessors, (21179), 4861 states have return successors, (21628), 20590 states have call predecessors, (21628), 21167 states have call successors, (21628) [2021-11-23 02:09:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63206 states to 63206 states and 89763 transitions. [2021-11-23 02:09:32,189 INFO L78 Accepts]: Start accepts. Automaton has 63206 states and 89763 transitions. Word has length 222 [2021-11-23 02:09:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:32,190 INFO L470 AbstractCegarLoop]: Abstraction has 63206 states and 89763 transitions. [2021-11-23 02:09:32,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2021-11-23 02:09:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 63206 states and 89763 transitions. [2021-11-23 02:09:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-23 02:09:32,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:32,201 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:32,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:09:32,201 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:09:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1707544913, now seen corresponding path program 1 times [2021-11-23 02:09:32,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:32,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192189178] [2021-11-23 02:09:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:32,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-23 02:09:32,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:32,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192189178] [2021-11-23 02:09:32,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192189178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:32,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:32,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:09:32,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002674585] [2021-11-23 02:09:32,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:32,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:09:32,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:09:32,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:32,567 INFO L87 Difference]: Start difference. First operand 63206 states and 89763 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:09:36,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:38,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:40,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:43,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:48,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:49,585 INFO L93 Difference]: Finished difference Result 63218 states and 89771 transitions. [2021-11-23 02:09:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:09:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 223 [2021-11-23 02:09:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:49,892 INFO L225 Difference]: With dead ends: 63218 [2021-11-23 02:09:49,892 INFO L226 Difference]: Without dead ends: 63216 [2021-11-23 02:09:49,921 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 [2021-11-23 02:09:49,921 INFO L933 BasicCegarLoop]: 3255 mSDtfsCounter, 1865 mSDsluCounter, 10341 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 12442 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:49,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 12442 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1566 Invalid, 4 Unknown, 0 Unchecked, 15.2s Time] [2021-11-23 02:09:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63216 states. [2021-11-23 02:09:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63216 to 63210. [2021-11-23 02:09:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63210 states, 37165 states have (on average 1.2635275124445042) internal successors, (46959), 38217 states have internal predecessors, (46959), 21179 states have call successors, (21179), 5009 states have call predecessors, (21179), 4862 states have return successors, (21628), 20590 states have call predecessors, (21628), 21167 states have call successors, (21628) [2021-11-23 02:09:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63210 states to 63210 states and 89766 transitions. [2021-11-23 02:09:53,483 INFO L78 Accepts]: Start accepts. Automaton has 63210 states and 89766 transitions. Word has length 223 [2021-11-23 02:09:53,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:53,484 INFO L470 AbstractCegarLoop]: Abstraction has 63210 states and 89766 transitions. [2021-11-23 02:09:53,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:09:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 63210 states and 89766 transitions. [2021-11-23 02:09:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-23 02:09:53,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:53,496 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:53,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:09:53,497 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:09:53,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2122748254, now seen corresponding path program 1 times [2021-11-23 02:09:53,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:53,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996898227] [2021-11-23 02:09:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:53,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2021-11-23 02:09:53,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:53,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996898227] [2021-11-23 02:09:53,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996898227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:53,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:53,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:09:53,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121590815] [2021-11-23 02:09:53,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:53,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:09:53,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:09:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:53,792 INFO L87 Difference]: Start difference. First operand 63210 states and 89766 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2021-11-23 02:09:56,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:59,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:03,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:06,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:10,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:11,888 INFO L93 Difference]: Finished difference Result 68077 states and 96369 transitions. [2021-11-23 02:10:11,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:10:11,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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 232 [2021-11-23 02:10:11,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:12,166 INFO L225 Difference]: With dead ends: 68077 [2021-11-23 02:10:12,166 INFO L226 Difference]: Without dead ends: 68075 [2021-11-23 02:10:12,198 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 [2021-11-23 02:10:12,199 INFO L933 BasicCegarLoop]: 3289 mSDtfsCounter, 1818 mSDsluCounter, 10426 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 12544 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:12,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 12544 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1592 Invalid, 5 Unknown, 0 Unchecked, 16.6s Time] [2021-11-23 02:10:12,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68075 states. [2021-11-23 02:10:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68075 to 68039. [2021-11-23 02:10:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68039 states, 40018 states have (on average 1.260982557848968) internal successors, (50462), 41105 states have internal predecessors, (50462), 22699 states have call successors, (22699), 5470 states have call predecessors, (22699), 5318 states have return successors, (23163), 22085 states have call predecessors, (23163), 22687 states have call successors, (23163) [2021-11-23 02:10:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68039 states to 68039 states and 96324 transitions. [2021-11-23 02:10:15,707 INFO L78 Accepts]: Start accepts. Automaton has 68039 states and 96324 transitions. Word has length 232 [2021-11-23 02:10:15,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:15,709 INFO L470 AbstractCegarLoop]: Abstraction has 68039 states and 96324 transitions. [2021-11-23 02:10:15,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2021-11-23 02:10:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 68039 states and 96324 transitions. [2021-11-23 02:10:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-23 02:10:15,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:15,722 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:15,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:10:15,723 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:10:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:15,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2076275089, now seen corresponding path program 1 times [2021-11-23 02:10:15,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:15,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060804630] [2021-11-23 02:10:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:15,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 939 trivial. 0 not checked. [2021-11-23 02:10:15,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:15,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060804630] [2021-11-23 02:10:15,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060804630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:15,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:15,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:10:15,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038593557] [2021-11-23 02:10:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:15,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:10:15,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:10:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:10:15,990 INFO L87 Difference]: Start difference. First operand 68039 states and 96324 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:10:19,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:20,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:21,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:25,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:27,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:32,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:33,936 INFO L93 Difference]: Finished difference Result 68150 states and 96465 transitions. [2021-11-23 02:10:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:10:33,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 233 [2021-11-23 02:10:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:34,370 INFO L225 Difference]: With dead ends: 68150 [2021-11-23 02:10:34,370 INFO L226 Difference]: Without dead ends: 68148 [2021-11-23 02:10:34,396 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 [2021-11-23 02:10:34,396 INFO L933 BasicCegarLoop]: 3231 mSDtfsCounter, 1932 mSDsluCounter, 10293 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 12370 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:34,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1941 Valid, 12370 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1564 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2021-11-23 02:10:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68148 states. [2021-11-23 02:10:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68148 to 68043. [2021-11-23 02:10:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68043 states, 40021 states have (on average 1.2609629944279253) internal successors, (50465), 41108 states have internal predecessors, (50465), 22699 states have call successors, (22699), 5471 states have call predecessors, (22699), 5319 states have return successors, (23163), 22085 states have call predecessors, (23163), 22687 states have call successors, (23163) [2021-11-23 02:10:37,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68043 states to 68043 states and 96327 transitions. [2021-11-23 02:10:37,632 INFO L78 Accepts]: Start accepts. Automaton has 68043 states and 96327 transitions. Word has length 233 [2021-11-23 02:10:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:37,632 INFO L470 AbstractCegarLoop]: Abstraction has 68043 states and 96327 transitions. [2021-11-23 02:10:37,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:10:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 68043 states and 96327 transitions. [2021-11-23 02:10:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-23 02:10:37,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:37,649 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:37,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:10:37,650 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:10:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1315189329, now seen corresponding path program 1 times [2021-11-23 02:10:37,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:37,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765018959] [2021-11-23 02:10:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:37,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 963 trivial. 0 not checked. [2021-11-23 02:10:37,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:37,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765018959] [2021-11-23 02:10:37,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765018959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:37,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:37,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:10:37,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953193983] [2021-11-23 02:10:37,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:37,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:10:37,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:10:37,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:10:37,932 INFO L87 Difference]: Start difference. First operand 68043 states and 96327 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:10:42,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:46,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:49,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:53,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:55,150 INFO L93 Difference]: Finished difference Result 68056 states and 96336 transitions. [2021-11-23 02:10:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:10:55,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 238 [2021-11-23 02:10:55,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:55,449 INFO L225 Difference]: With dead ends: 68056 [2021-11-23 02:10:55,449 INFO L226 Difference]: Without dead ends: 68054 [2021-11-23 02:10:55,483 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 [2021-11-23 02:10:55,484 INFO L933 BasicCegarLoop]: 3231 mSDtfsCounter, 1932 mSDsluCounter, 10293 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 12370 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:55,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1940 Valid, 12370 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1564 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2021-11-23 02:10:55,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68054 states. [2021-11-23 02:10:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68054 to 68047. [2021-11-23 02:10:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68047 states, 40024 states have (on average 1.2609434339396361) internal successors, (50468), 41111 states have internal predecessors, (50468), 22699 states have call successors, (22699), 5472 states have call predecessors, (22699), 5320 states have return successors, (23163), 22085 states have call predecessors, (23163), 22687 states have call successors, (23163) [2021-11-23 02:10:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68047 states to 68047 states and 96330 transitions. [2021-11-23 02:10:58,663 INFO L78 Accepts]: Start accepts. Automaton has 68047 states and 96330 transitions. Word has length 238 [2021-11-23 02:10:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:58,664 INFO L470 AbstractCegarLoop]: Abstraction has 68047 states and 96330 transitions. [2021-11-23 02:10:58,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:10:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 68047 states and 96330 transitions. [2021-11-23 02:10:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-23 02:10:58,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:58,679 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:58,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:10:58,680 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:10:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash 373142010, now seen corresponding path program 1 times [2021-11-23 02:10:58,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:58,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305144423] [2021-11-23 02:10:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:58,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2021-11-23 02:10:58,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:58,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305144423] [2021-11-23 02:10:58,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305144423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:58,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:58,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:10:58,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680898531] [2021-11-23 02:10:58,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:58,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:10:58,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:10:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:10:58,976 INFO L87 Difference]: Start difference. First operand 68047 states and 96330 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-23 02:11:02,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:03,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:05,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:08,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:10,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:16,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:20,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:21,993 INFO L93 Difference]: Finished difference Result 117590 states and 167050 transitions. [2021-11-23 02:11:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:11:21,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 236 [2021-11-23 02:11:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:22,572 INFO L225 Difference]: With dead ends: 117590 [2021-11-23 02:11:22,572 INFO L226 Difference]: Without dead ends: 117588 [2021-11-23 02:11:22,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:11:22,621 INFO L933 BasicCegarLoop]: 4099 mSDtfsCounter, 2848 mSDsluCounter, 12292 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 14978 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:22,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2855 Valid, 14978 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1942 Invalid, 4 Unknown, 0 Unchecked, 19.6s Time] [2021-11-23 02:11:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117588 states. [2021-11-23 02:11:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117588 to 117501. [2021-11-23 02:11:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117501 states, 69286 states have (on average 1.2642236526859683) internal successors, (87593), 71265 states have internal predecessors, (87593), 39214 states have call successors, (39214), 9317 states have call predecessors, (39214), 8997 states have return successors, (40094), 37996 states have call predecessors, (40094), 39202 states have call successors, (40094) [2021-11-23 02:11:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117501 states to 117501 states and 166901 transitions. [2021-11-23 02:11:28,838 INFO L78 Accepts]: Start accepts. Automaton has 117501 states and 166901 transitions. Word has length 236 [2021-11-23 02:11:28,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:28,839 INFO L470 AbstractCegarLoop]: Abstraction has 117501 states and 166901 transitions. [2021-11-23 02:11:28,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-23 02:11:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 117501 states and 166901 transitions. [2021-11-23 02:11:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-23 02:11:28,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:28,855 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:28,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:11:28,856 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:11:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1157705263, now seen corresponding path program 1 times [2021-11-23 02:11:28,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:28,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959433663] [2021-11-23 02:11:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:28,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-23 02:11:29,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:29,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959433663] [2021-11-23 02:11:29,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959433663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:29,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:29,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:11:29,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835538117] [2021-11-23 02:11:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:29,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:11:29,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:29,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:11:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:11:29,152 INFO L87 Difference]: Start difference. First operand 117501 states and 166901 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:11:32,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:34,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:36,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:37,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:40,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:42,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:49,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:53,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:54,141 INFO L93 Difference]: Finished difference Result 117918 states and 167435 transitions. [2021-11-23 02:11:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:11:54,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 243 [2021-11-23 02:11:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:54,703 INFO L225 Difference]: With dead ends: 117918 [2021-11-23 02:11:54,703 INFO L226 Difference]: Without dead ends: 117916 [2021-11-23 02:11:54,754 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 [2021-11-23 02:11:54,755 INFO L933 BasicCegarLoop]: 4056 mSDtfsCounter, 2854 mSDsluCounter, 12176 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2861 SdHoareTripleChecker+Valid, 14828 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:54,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2861 Valid, 14828 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1941 Invalid, 5 Unknown, 0 Unchecked, 21.8s Time] [2021-11-23 02:11:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117916 states. [2021-11-23 02:11:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117916 to 117879. [2021-11-23 02:11:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117879 states, 69484 states have (on average 1.2637873467273042) internal successors, (87813), 71467 states have internal predecessors, (87813), 39356 states have call successors, (39356), 9353 states have call predecessors, (39356), 9035 states have return successors, (40228), 38136 states have call predecessors, (40228), 39336 states have call successors, (40228) [2021-11-23 02:12:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117879 states to 117879 states and 167397 transitions. [2021-11-23 02:12:00,993 INFO L78 Accepts]: Start accepts. Automaton has 117879 states and 167397 transitions. Word has length 243 [2021-11-23 02:12:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:00,996 INFO L470 AbstractCegarLoop]: Abstraction has 117879 states and 167397 transitions. [2021-11-23 02:12:00,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-23 02:12:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 117879 states and 167397 transitions. [2021-11-23 02:12:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-23 02:12:01,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:01,016 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 10, 9, 9, 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] [2021-11-23 02:12:01,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:12:01,017 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:12:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash -696195422, now seen corresponding path program 1 times [2021-11-23 02:12:01,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:01,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470237022] [2021-11-23 02:12:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:01,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2021-11-23 02:12:01,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:01,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470237022] [2021-11-23 02:12:01,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470237022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:01,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:01,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:12:01,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048284260] [2021-11-23 02:12:01,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:01,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:12:01,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:12:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:12:01,311 INFO L87 Difference]: Start difference. First operand 117879 states and 167397 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-23 02:12:04,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:08,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:11,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:18,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:21,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:23,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:24,078 INFO L93 Difference]: Finished difference Result 117889 states and 167404 transitions. [2021-11-23 02:12:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:12:24,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 252 [2021-11-23 02:12:24,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:24,642 INFO L225 Difference]: With dead ends: 117889 [2021-11-23 02:12:24,642 INFO L226 Difference]: Without dead ends: 117887 [2021-11-23 02:12:24,696 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 [2021-11-23 02:12:24,697 INFO L933 BasicCegarLoop]: 3227 mSDtfsCounter, 1866 mSDsluCounter, 10285 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 12358 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:24,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 12358 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1562 Invalid, 6 Unknown, 0 Unchecked, 19.2s Time] [2021-11-23 02:12:24,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117887 states.