./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-sis-sis900.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba --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 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:39:42,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:39:42,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:39:42,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:39:42,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:39:42,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:39:42,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:39:42,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:39:42,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:39:42,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:39:42,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:39:42,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:39:42,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:39:42,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:39:42,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:39:42,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:39:42,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:39:42,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:39:42,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:39:42,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:39:42,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:39:42,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:39:42,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:39:42,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:39:42,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:39:42,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:39:42,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:39:42,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:39:42,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:39:42,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:39:42,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:39:42,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:39:42,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:39:42,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:39:42,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:39:42,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:39:42,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:39:42,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:39:42,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:39:42,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:39:42,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:39:42,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:39:42,158 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:39:42,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:39:42,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:39:42,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:39:42,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:39:42,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:39:42,161 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:39:42,161 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:39:42,161 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:39:42,161 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:39:42,162 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:39:42,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:39:42,163 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:39:42,163 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:39:42,163 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:39:42,163 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:39:42,164 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:39:42,164 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:39:42,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:39:42,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:39:42,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:39:42,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:39:42,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:39:42,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:39:42,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:39:42,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:39:42,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:39:42,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:39:42,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:39:42,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:39:42,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:39:42,167 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:39:42,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:39:42,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:39:42,168 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:39:42,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:39:42,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:39:42,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:39:42,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b [2022-11-22 01:39:42,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:39:42,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:39:42,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:39:42,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:39:42,527 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:39:42,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-11-22 01:39:45,619 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:39:46,290 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:39:46,291 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-11-22 01:39:46,340 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/data/35ae881ae/0a95f421d83b44ea9ebaac425b61cefc/FLAGf67a1401c [2022-11-22 01:39:46,358 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/data/35ae881ae/0a95f421d83b44ea9ebaac425b61cefc [2022-11-22 01:39:46,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:39:46,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:39:46,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:39:46,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:39:46,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:39:46,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:46" (1/1) ... [2022-11-22 01:39:46,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4463269f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:46, skipping insertion in model container [2022-11-22 01:39:46,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:46" (1/1) ... [2022-11-22 01:39:46,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:39:46,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:39:49,692 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2022-11-22 01:39:49,698 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2022-11-22 01:39:49,699 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2022-11-22 01:39:49,700 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2022-11-22 01:39:49,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:39:49,818 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:39:50,097 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2022-11-22 01:39:50,097 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2022-11-22 01:39:50,098 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2022-11-22 01:39:50,098 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2022-11-22 01:39:50,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:39:50,341 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:39:50,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50 WrapperNode [2022-11-22 01:39:50,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:39:50,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:39:50,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:39:50,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:39:50,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,688 INFO L138 Inliner]: procedures = 454, calls = 1956, calls flagged for inlining = 238, calls inlined = 222, statements flattened = 5208 [2022-11-22 01:39:50,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:39:50,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:39:50,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:39:50,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:39:50,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:39:50,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:39:50,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:39:50,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:39:50,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (1/1) ... [2022-11-22 01:39:50,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:39:51,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:51,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:39:51,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88aa37f-e608-47e6-a9d0-db968484569f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:39:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rxfilter [2022-11-22 01:39:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rxfilter [2022-11-22 01:39:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-22 01:39:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-22 01:39:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 01:39:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 01:39:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:39:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:39:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 01:39:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 01:39:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:39:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:39:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:39:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:39:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:39:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:39:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 01:39:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 01:39:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 01:39:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 01:39:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 01:39:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 01:39:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_default_phy [2022-11-22 01:39:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_default_phy [2022-11-22 01:39:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-22 01:39:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-22 01:39:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_75 [2022-11-22 01:39:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_75 [2022-11-22 01:39:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2022-11-22 01:39:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2022-11-22 01:39:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 01:39:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 01:39:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 01:39:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 01:39:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_check_mode [2022-11-22 01:39:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_check_mode [2022-11-22 01:39:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 01:39:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 01:39:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:39:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:39:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:39:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:39:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 01:39:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 01:39:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 01:39:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 01:39:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:39:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:39:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_remove [2022-11-22 01:39:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_remove [2022-11-22 01:39:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure sis630_set_eq [2022-11-22 01:39:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure sis630_set_eq [2022-11-22 01:39:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_device [2022-11-22 01:39:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_device [2022-11-22 01:39:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 01:39:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 01:39:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:39:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sis900_cleanup_module_14_2 [2022-11-22 01:39:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sis900_cleanup_module_14_2 [2022-11-22 01:39:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_tx_ring [2022-11-22 01:39:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_tx_ring [2022-11-22 01:39:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:39:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:39:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_sis900_private [2022-11-22 01:39:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_sis900_private [2022-11-22 01:39:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:39:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:39:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:39:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:39:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_mode [2022-11-22 01:39:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_mode [2022-11-22 01:39:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:39:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 01:39:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 01:39:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_sis900_private [2022-11-22 01:39:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_sis900_private [2022-11-22 01:39:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 01:39:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 01:39:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 01:39:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 01:39:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:39:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:39:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:39:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:39:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 01:39:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 01:39:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_interrupt [2022-11-22 01:39:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_interrupt [2022-11-22 01:39:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_reset_phy [2022-11-22 01:39:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_reset_phy [2022-11-22 01:39:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:39:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:39:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:39:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:39:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:39:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:39:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:39:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:39:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:39:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:39:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:39:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-22 01:39:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-22 01:39:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_open [2022-11-22 01:39:51,085 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_open [2022-11-22 01:39:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:39:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:39:51,089 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_nway_reset [2022-11-22 01:39:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_nway_reset [2022-11-22 01:39:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:39:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:39:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:39:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:39:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:39:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:39:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 01:39:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 01:39:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:39:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:39:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_close [2022-11-22 01:39:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_close [2022-11-22 01:39:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:39:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:39:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:39:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:39:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 01:39:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 01:39:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 01:39:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 01:39:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_reset [2022-11-22 01:39:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_reset [2022-11-22 01:39:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 01:39:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 01:39:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:39:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:39:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 01:39:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 01:39:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 01:39:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 01:39:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2022-11-22 01:39:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2022-11-22 01:39:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 01:39:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 01:39:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:39:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:39:51,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:39:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_74 [2022-11-22 01:39:51,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_74 [2022-11-22 01:39:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:39:51,099 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 01:39:51,099 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 01:39:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rx_ring [2022-11-22 01:39:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rx_ring [2022-11-22 01:39:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:39:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-22 01:39:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-22 01:39:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:39:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:39:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:39:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:39:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2022-11-22 01:39:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2022-11-22 01:39:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 01:39:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 01:39:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-22 01:39:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-22 01:39:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_poll [2022-11-22 01:39:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_poll [2022-11-22 01:39:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:39:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:39:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:39:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:39:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-22 01:39:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-22 01:39:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:39:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:39:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:39:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:39:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_resume [2022-11-22 01:39:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_resume [2022-11-22 01:39:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:39:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:39:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:39:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2022-11-22 01:39:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2022-11-22 01:39:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_idle [2022-11-22 01:39:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_idle [2022-11-22 01:39:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_tx_timeout [2022-11-22 01:39:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_tx_timeout [2022-11-22 01:39:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:39:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:39:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 01:39:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 01:39:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 01:39:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 01:39:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:39:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:39:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:39:52,096 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:39:52,100 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:39:52,488 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:39:56,033 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:39:56,134 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:39:57,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:39:57,852 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:39:57,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:57 BoogieIcfgContainer [2022-11-22 01:39:57,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:39:57,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:39:57,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:39:57,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:39:57,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:39:46" (1/3) ... [2022-11-22 01:39:57,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8b14c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:57, skipping insertion in model container [2022-11-22 01:39:57,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:50" (2/3) ... [2022-11-22 01:39:57,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8b14c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:57, skipping insertion in model container [2022-11-22 01:39:57,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:57" (3/3) ... [2022-11-22 01:39:57,870 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-11-22 01:39:57,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:39:57,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:39:58,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:39:58,010 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6025333d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:39:58,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:39:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 1444 states, 823 states have (on average 1.2940461725394896) internal successors, (1065), 850 states have internal predecessors, (1065), 526 states have call successors, (526), 93 states have call predecessors, (526), 92 states have return successors, (520), 512 states have call predecessors, (520), 520 states have call successors, (520) [2022-11-22 01:39:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:39:58,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:58,056 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:58,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:39:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash -477873918, now seen corresponding path program 1 times [2022-11-22 01:39:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:58,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497654146] [2022-11-22 01:39:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-22 01:39:58,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:58,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497654146] [2022-11-22 01:39:58,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497654146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:58,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:58,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961299196] [2022-11-22 01:39:58,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:58,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:58,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:58,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:58,856 INFO L87 Difference]: Start difference. First operand has 1444 states, 823 states have (on average 1.2940461725394896) internal successors, (1065), 850 states have internal predecessors, (1065), 526 states have call successors, (526), 93 states have call predecessors, (526), 92 states have return successors, (520), 512 states have call predecessors, (520), 520 states have call successors, (520) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 01:40:04,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:05,287 INFO L93 Difference]: Finished difference Result 4019 states and 5936 transitions. [2022-11-22 01:40:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:40:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2022-11-22 01:40:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:05,322 INFO L225 Difference]: With dead ends: 4019 [2022-11-22 01:40:05,322 INFO L226 Difference]: Without dead ends: 2588 [2022-11-22 01:40:05,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:40:05,344 INFO L413 NwaCegarLoop]: 2224 mSDtfsCounter, 1686 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:05,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1686 Valid, 4006 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 591 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-22 01:40:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2022-11-22 01:40:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2584. [2022-11-22 01:40:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 1484 states have (on average 1.284366576819407) internal successors, (1906), 1531 states have internal predecessors, (1906), 922 states have call successors, (922), 176 states have call predecessors, (922), 175 states have return successors, (918), 904 states have call predecessors, (918), 918 states have call successors, (918) [2022-11-22 01:40:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3746 transitions. [2022-11-22 01:40:05,694 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3746 transitions. Word has length 131 [2022-11-22 01:40:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:05,695 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3746 transitions. [2022-11-22 01:40:05,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 01:40:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3746 transitions. [2022-11-22 01:40:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-22 01:40:05,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:05,701 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:40:05,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:40:05,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:40:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash -521482299, now seen corresponding path program 1 times [2022-11-22 01:40:05,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:05,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283971632] [2022-11-22 01:40:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:05,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-22 01:40:06,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:06,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283971632] [2022-11-22 01:40:06,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283971632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:40:06,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:40:06,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:40:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036328719] [2022-11-22 01:40:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:40:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:40:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:40:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:40:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:40:06,024 INFO L87 Difference]: Start difference. First operand 2584 states and 3746 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:40:10,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:11,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:12,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:12,016 INFO L93 Difference]: Finished difference Result 7419 states and 10739 transitions. [2022-11-22 01:40:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:40:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 135 [2022-11-22 01:40:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:12,070 INFO L225 Difference]: With dead ends: 7419 [2022-11-22 01:40:12,071 INFO L226 Difference]: Without dead ends: 4858 [2022-11-22 01:40:12,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:40:12,091 INFO L413 NwaCegarLoop]: 2235 mSDtfsCounter, 1727 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:12,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 3980 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 575 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-22 01:40:12,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2022-11-22 01:40:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4829. [2022-11-22 01:40:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 2780 states have (on average 1.2841726618705036) internal successors, (3570), 2870 states have internal predecessors, (3570), 1707 states have call successors, (1707), 344 states have call predecessors, (1707), 339 states have return successors, (1707), 1664 states have call predecessors, (1707), 1703 states have call successors, (1707) [2022-11-22 01:40:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 6984 transitions. [2022-11-22 01:40:12,541 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 6984 transitions. Word has length 135 [2022-11-22 01:40:12,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:12,542 INFO L495 AbstractCegarLoop]: Abstraction has 4829 states and 6984 transitions. [2022-11-22 01:40:12,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:40:12,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 6984 transitions. [2022-11-22 01:40:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 01:40:12,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:12,552 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:40:12,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:40:12,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:40:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:12,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1347912575, now seen corresponding path program 1 times [2022-11-22 01:40:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:12,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904926687] [2022-11-22 01:40:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:12,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-22 01:40:12,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:12,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904926687] [2022-11-22 01:40:12,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904926687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:40:12,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:40:12,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:40:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781747978] [2022-11-22 01:40:12,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:40:12,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:40:12,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:40:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:40:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:40:12,873 INFO L87 Difference]: Start difference. First operand 4829 states and 6984 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 01:40:18,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:20,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:20,696 INFO L93 Difference]: Finished difference Result 11421 states and 16440 transitions. [2022-11-22 01:40:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:40:20,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 137 [2022-11-22 01:40:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:20,744 INFO L225 Difference]: With dead ends: 11421 [2022-11-22 01:40:20,744 INFO L226 Difference]: Without dead ends: 6615 [2022-11-22 01:40:20,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:40:20,772 INFO L413 NwaCegarLoop]: 2244 mSDtfsCounter, 1742 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:20,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 3987 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 608 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 01:40:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6615 states. [2022-11-22 01:40:21,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6615 to 6588. [2022-11-22 01:40:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6588 states, 3736 states have (on average 1.2628479657387581) internal successors, (4718), 3868 states have internal predecessors, (4718), 2357 states have call successors, (2357), 500 states have call predecessors, (2357), 492 states have return successors, (2360), 2294 states have call predecessors, (2360), 2353 states have call successors, (2360) [2022-11-22 01:40:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 9435 transitions. [2022-11-22 01:40:21,274 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 9435 transitions. Word has length 137 [2022-11-22 01:40:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:21,274 INFO L495 AbstractCegarLoop]: Abstraction has 6588 states and 9435 transitions. [2022-11-22 01:40:21,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 01:40:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 9435 transitions. [2022-11-22 01:40:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 01:40:21,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:21,278 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:40:21,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:40:21,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:40:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:21,279 INFO L85 PathProgramCache]: Analyzing trace with hash -702942079, now seen corresponding path program 1 times [2022-11-22 01:40:21,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:21,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503509420] [2022-11-22 01:40:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-11-22 01:40:21,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:21,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503509420] [2022-11-22 01:40:21,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503509420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:40:21,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:40:21,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:40:21,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018769446] [2022-11-22 01:40:21,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:40:21,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:40:21,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:40:21,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:40:21,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:40:21,902 INFO L87 Difference]: Start difference. First operand 6588 states and 9435 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:40:26,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:31,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:33,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:35,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:39,023 INFO L93 Difference]: Finished difference Result 16665 states and 23812 transitions. [2022-11-22 01:40:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:40:39,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 144 [2022-11-22 01:40:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:39,110 INFO L225 Difference]: With dead ends: 16665 [2022-11-22 01:40:39,110 INFO L226 Difference]: Without dead ends: 10100 [2022-11-22 01:40:39,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:40:39,150 INFO L413 NwaCegarLoop]: 2960 mSDtfsCounter, 4936 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 1852 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 5207 SdHoareTripleChecker+Invalid, 4336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1852 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:39,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5038 Valid, 5207 Invalid, 4336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1852 Valid, 2483 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2022-11-22 01:40:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10100 states. [2022-11-22 01:40:39,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 10030. [2022-11-22 01:40:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10030 states, 5801 states have (on average 1.2692639200137907) internal successors, (7363), 5989 states have internal predecessors, (7363), 3439 states have call successors, (3439), 806 states have call predecessors, (3439), 787 states have return successors, (3440), 3336 states have call predecessors, (3440), 3435 states have call successors, (3440) [2022-11-22 01:40:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10030 states to 10030 states and 14242 transitions. [2022-11-22 01:40:40,022 INFO L78 Accepts]: Start accepts. Automaton has 10030 states and 14242 transitions. Word has length 144 [2022-11-22 01:40:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:40,024 INFO L495 AbstractCegarLoop]: Abstraction has 10030 states and 14242 transitions. [2022-11-22 01:40:40,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:40:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10030 states and 14242 transitions. [2022-11-22 01:40:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-22 01:40:40,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:40,029 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:40:40,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:40:40,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:40:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1622265951, now seen corresponding path program 1 times [2022-11-22 01:40:40,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:40,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010020212] [2022-11-22 01:40:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:40,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-11-22 01:40:40,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:40,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010020212] [2022-11-22 01:40:40,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010020212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:40:40,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:40:40,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:40:40,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419157176] [2022-11-22 01:40:40,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:40:40,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:40:40,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:40:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:40:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:40:40,571 INFO L87 Difference]: Start difference. First operand 10030 states and 14242 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 01:40:47,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:49,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:50,152 INFO L93 Difference]: Finished difference Result 10036 states and 14247 transitions. [2022-11-22 01:40:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:40:50,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2022-11-22 01:40:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:50,202 INFO L225 Difference]: With dead ends: 10036 [2022-11-22 01:40:50,203 INFO L226 Difference]: Without dead ends: 10034 [2022-11-22 01:40:50,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:40:50,212 INFO L413 NwaCegarLoop]: 1795 mSDtfsCounter, 2034 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 5372 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:50,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 5372 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2022-11-22 01:40:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10034 states. [2022-11-22 01:40:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10034 to 10034. [2022-11-22 01:40:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10034 states, 5804 states have (on average 1.2691247415575466) internal successors, (7366), 5992 states have internal predecessors, (7366), 3439 states have call successors, (3439), 807 states have call predecessors, (3439), 788 states have return successors, (3440), 3336 states have call predecessors, (3440), 3435 states have call successors, (3440) [2022-11-22 01:40:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10034 states to 10034 states and 14245 transitions. [2022-11-22 01:40:50,981 INFO L78 Accepts]: Start accepts. Automaton has 10034 states and 14245 transitions. Word has length 173 [2022-11-22 01:40:50,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:50,982 INFO L495 AbstractCegarLoop]: Abstraction has 10034 states and 14245 transitions. [2022-11-22 01:40:50,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 01:40:50,982 INFO L276 IsEmpty]: Start isEmpty. Operand 10034 states and 14245 transitions. [2022-11-22 01:40:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-22 01:40:50,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:50,986 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:40:50,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:40:50,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:40:50,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1714589803, now seen corresponding path program 1 times [2022-11-22 01:40:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:50,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936782557] [2022-11-22 01:40:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-22 01:40:51,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:51,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936782557] [2022-11-22 01:40:51,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936782557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:40:51,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:40:51,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:40:51,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091169314] [2022-11-22 01:40:51,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:40:51,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:40:51,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:40:51,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:40:51,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:40:51,474 INFO L87 Difference]: Start difference. First operand 10034 states and 14245 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-22 01:40:53,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:57,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:40:59,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:00,309 INFO L93 Difference]: Finished difference Result 10040 states and 14250 transitions. [2022-11-22 01:41:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:41:00,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 181 [2022-11-22 01:41:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:00,362 INFO L225 Difference]: With dead ends: 10040 [2022-11-22 01:41:00,362 INFO L226 Difference]: Without dead ends: 10038 [2022-11-22 01:41:00,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:41:00,371 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 2028 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:00,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 5375 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 879 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-22 01:41:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10038 states. [2022-11-22 01:41:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 10038. [2022-11-22 01:41:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10038 states, 5807 states have (on average 1.2689857069054589) internal successors, (7369), 5995 states have internal predecessors, (7369), 3439 states have call successors, (3439), 808 states have call predecessors, (3439), 789 states have return successors, (3440), 3336 states have call predecessors, (3440), 3435 states have call successors, (3440) [2022-11-22 01:41:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10038 states to 10038 states and 14248 transitions. [2022-11-22 01:41:01,162 INFO L78 Accepts]: Start accepts. Automaton has 10038 states and 14248 transitions. Word has length 181 [2022-11-22 01:41:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:01,163 INFO L495 AbstractCegarLoop]: Abstraction has 10038 states and 14248 transitions. [2022-11-22 01:41:01,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-22 01:41:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 10038 states and 14248 transitions. [2022-11-22 01:41:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-22 01:41:01,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:01,167 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:41:01,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:41:01,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:41:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash 360061729, now seen corresponding path program 1 times [2022-11-22 01:41:01,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:01,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640720124] [2022-11-22 01:41:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:01,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2022-11-22 01:41:01,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:01,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640720124] [2022-11-22 01:41:01,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640720124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:01,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:01,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:41:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099711487] [2022-11-22 01:41:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:01,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:41:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:41:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:41:01,641 INFO L87 Difference]: Start difference. First operand 10038 states and 14248 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 01:41:04,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:05,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:08,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:10,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:11,578 INFO L93 Difference]: Finished difference Result 10044 states and 14253 transitions. [2022-11-22 01:41:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:41:11,578 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 183 [2022-11-22 01:41:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:11,642 INFO L225 Difference]: With dead ends: 10044 [2022-11-22 01:41:11,642 INFO L226 Difference]: Without dead ends: 10042 [2022-11-22 01:41:11,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:41:11,653 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 2029 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:11,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 5375 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 879 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-22 01:41:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10042 states. [2022-11-22 01:41:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10042 to 10042. [2022-11-22 01:41:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10042 states, 5810 states have (on average 1.2688468158347677) internal successors, (7372), 5998 states have internal predecessors, (7372), 3439 states have call successors, (3439), 809 states have call predecessors, (3439), 790 states have return successors, (3440), 3336 states have call predecessors, (3440), 3435 states have call successors, (3440) [2022-11-22 01:41:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10042 states to 10042 states and 14251 transitions. [2022-11-22 01:41:12,535 INFO L78 Accepts]: Start accepts. Automaton has 10042 states and 14251 transitions. Word has length 183 [2022-11-22 01:41:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:12,536 INFO L495 AbstractCegarLoop]: Abstraction has 10042 states and 14251 transitions. [2022-11-22 01:41:12,536 INFO L496 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 01:41:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10042 states and 14251 transitions. [2022-11-22 01:41:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-22 01:41:12,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:12,541 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:41:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:41:12,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:41:12,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -689035330, now seen corresponding path program 1 times [2022-11-22 01:41:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:12,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879909168] [2022-11-22 01:41:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:12,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-22 01:41:12,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:12,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879909168] [2022-11-22 01:41:12,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879909168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:12,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:12,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:41:12,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324106880] [2022-11-22 01:41:12,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:12,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:41:12,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:12,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:41:12,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:41:12,999 INFO L87 Difference]: Start difference. First operand 10042 states and 14251 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 01:41:15,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:17,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:19,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:22,967 INFO L93 Difference]: Finished difference Result 10048 states and 14256 transitions. [2022-11-22 01:41:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:41:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 192 [2022-11-22 01:41:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:23,027 INFO L225 Difference]: With dead ends: 10048 [2022-11-22 01:41:23,027 INFO L226 Difference]: Without dead ends: 10046 [2022-11-22 01:41:23,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:41:23,036 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 2028 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:23,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 5375 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 879 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-22 01:41:23,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10046 states. [2022-11-22 01:41:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10046 to 10046. [2022-11-22 01:41:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10046 states, 5813 states have (on average 1.2687080681231722) internal successors, (7375), 6001 states have internal predecessors, (7375), 3439 states have call successors, (3439), 810 states have call predecessors, (3439), 791 states have return successors, (3440), 3336 states have call predecessors, (3440), 3435 states have call successors, (3440) [2022-11-22 01:41:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10046 states to 10046 states and 14254 transitions. [2022-11-22 01:41:23,950 INFO L78 Accepts]: Start accepts. Automaton has 10046 states and 14254 transitions. Word has length 192 [2022-11-22 01:41:23,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:23,951 INFO L495 AbstractCegarLoop]: Abstraction has 10046 states and 14254 transitions. [2022-11-22 01:41:23,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 01:41:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 10046 states and 14254 transitions. [2022-11-22 01:41:23,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-22 01:41:23,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:23,959 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:41:23,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:41:23,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:41:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash -876652895, now seen corresponding path program 1 times [2022-11-22 01:41:23,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:23,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107823664] [2022-11-22 01:41:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:23,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2022-11-22 01:41:24,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:24,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107823664] [2022-11-22 01:41:24,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107823664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:24,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:24,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:41:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900961367] [2022-11-22 01:41:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:24,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:41:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:24,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:41:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:41:24,384 INFO L87 Difference]: Start difference. First operand 10046 states and 14254 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 01:41:26,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:28,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:31,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:34,945 INFO L93 Difference]: Finished difference Result 13946 states and 19670 transitions. [2022-11-22 01:41:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:41:34,946 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, (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 193 [2022-11-22 01:41:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:35,012 INFO L225 Difference]: With dead ends: 13946 [2022-11-22 01:41:35,012 INFO L226 Difference]: Without dead ends: 13944 [2022-11-22 01:41:35,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:41:35,021 INFO L413 NwaCegarLoop]: 2168 mSDtfsCounter, 1428 mSDsluCounter, 6083 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 8251 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:35,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 8251 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-11-22 01:41:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13944 states. [2022-11-22 01:41:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13944 to 13938. [2022-11-22 01:41:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13938 states, 8016 states have (on average 1.2597305389221556) internal successors, (10098), 8280 states have internal predecessors, (10098), 4784 states have call successors, (4784), 1163 states have call predecessors, (4784), 1135 states have return successors, (4783), 4639 states have call predecessors, (4783), 4776 states have call successors, (4783) [2022-11-22 01:41:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13938 states to 13938 states and 19665 transitions. [2022-11-22 01:41:36,475 INFO L78 Accepts]: Start accepts. Automaton has 13938 states and 19665 transitions. Word has length 193 [2022-11-22 01:41:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:36,477 INFO L495 AbstractCegarLoop]: Abstraction has 13938 states and 19665 transitions. [2022-11-22 01:41:36,478 INFO L496 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 01:41:36,478 INFO L276 IsEmpty]: Start isEmpty. Operand 13938 states and 19665 transitions. [2022-11-22 01:41:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-22 01:41:36,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:36,483 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:41:36,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:41:36,483 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:41:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash 823319294, now seen corresponding path program 1 times [2022-11-22 01:41:36,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:36,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678451616] [2022-11-22 01:41:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:36,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2022-11-22 01:41:36,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:36,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678451616] [2022-11-22 01:41:36,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678451616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:36,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:36,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:41:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60055522] [2022-11-22 01:41:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:36,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:41:36,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:36,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:41:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:41:36,900 INFO L87 Difference]: Start difference. First operand 13938 states and 19665 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:41:45,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:47,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:48,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:48,517 INFO L93 Difference]: Finished difference Result 13948 states and 19674 transitions. [2022-11-22 01:41:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:41:48,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 202 [2022-11-22 01:41:48,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:48,589 INFO L225 Difference]: With dead ends: 13948 [2022-11-22 01:41:48,589 INFO L226 Difference]: Without dead ends: 13946 [2022-11-22 01:41:48,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:41:48,603 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 2028 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:48,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 5375 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2022-11-22 01:41:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13946 states. [2022-11-22 01:41:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13946 to 13946. [2022-11-22 01:41:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13946 states, 8022 states have (on average 1.2595362752430814) internal successors, (10104), 8286 states have internal predecessors, (10104), 4784 states have call successors, (4784), 1165 states have call predecessors, (4784), 1137 states have return successors, (4783), 4639 states have call predecessors, (4783), 4776 states have call successors, (4783) [2022-11-22 01:41:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13946 states to 13946 states and 19671 transitions. [2022-11-22 01:41:50,319 INFO L78 Accepts]: Start accepts. Automaton has 13946 states and 19671 transitions. Word has length 202 [2022-11-22 01:41:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:50,320 INFO L495 AbstractCegarLoop]: Abstraction has 13946 states and 19671 transitions. [2022-11-22 01:41:50,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:41:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 13946 states and 19671 transitions. [2022-11-22 01:41:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-22 01:41:50,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:50,328 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:41:50,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:41:50,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:41:50,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:50,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1153819169, now seen corresponding path program 1 times [2022-11-22 01:41:50,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:50,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873900087] [2022-11-22 01:41:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:50,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2022-11-22 01:41:50,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:50,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873900087] [2022-11-22 01:41:50,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873900087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:50,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:50,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:41:50,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165024741] [2022-11-22 01:41:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:50,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:41:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:41:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:41:50,860 INFO L87 Difference]: Start difference. First operand 13946 states and 19671 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:41:53,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:56,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:59,405 INFO L93 Difference]: Finished difference Result 21587 states and 30501 transitions. [2022-11-22 01:41:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:41:59,406 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 203 [2022-11-22 01:41:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:59,497 INFO L225 Difference]: With dead ends: 21587 [2022-11-22 01:41:59,497 INFO L226 Difference]: Without dead ends: 21585 [2022-11-22 01:41:59,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:41:59,509 INFO L413 NwaCegarLoop]: 2338 mSDtfsCounter, 1525 mSDsluCounter, 6401 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 8739 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:59,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 8739 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1363 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-11-22 01:41:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21585 states. [2022-11-22 01:42:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21585 to 21571. [2022-11-22 01:42:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21571 states, 12392 states have (on average 1.262588766946417) internal successors, (15646), 12820 states have internal predecessors, (15646), 7418 states have call successors, (7418), 1847 states have call predecessors, (7418), 1758 states have return successors, (7422), 7109 states have call predecessors, (7422), 7406 states have call successors, (7422) [2022-11-22 01:42:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21571 states to 21571 states and 30486 transitions. [2022-11-22 01:42:01,513 INFO L78 Accepts]: Start accepts. Automaton has 21571 states and 30486 transitions. Word has length 203 [2022-11-22 01:42:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:01,513 INFO L495 AbstractCegarLoop]: Abstraction has 21571 states and 30486 transitions. [2022-11-22 01:42:01,514 INFO L496 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:42:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 21571 states and 30486 transitions. [2022-11-22 01:42:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-22 01:42:01,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:01,519 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:42:01,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:42:01,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:42:01,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1519636057, now seen corresponding path program 1 times [2022-11-22 01:42:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:01,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291412981] [2022-11-22 01:42:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-22 01:42:02,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:02,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291412981] [2022-11-22 01:42:02,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291412981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:42:02,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:42:02,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:42:02,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637914388] [2022-11-22 01:42:02,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:42:02,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:42:02,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:42:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:42:02,019 INFO L87 Difference]: Start difference. First operand 21571 states and 30486 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:42:04,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:05,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:06,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:11,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:13,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:15,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:15,066 INFO L93 Difference]: Finished difference Result 21585 states and 30499 transitions. [2022-11-22 01:42:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:42:15,067 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, (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 208 [2022-11-22 01:42:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:15,171 INFO L225 Difference]: With dead ends: 21585 [2022-11-22 01:42:15,171 INFO L226 Difference]: Without dead ends: 21583 [2022-11-22 01:42:15,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:42:15,183 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 2029 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:15,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 5375 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-11-22 01:42:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21583 states. [2022-11-22 01:42:16,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21583 to 21583. [2022-11-22 01:42:16,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21583 states, 12401 states have (on average 1.262398193694057) internal successors, (15655), 12829 states have internal predecessors, (15655), 7418 states have call successors, (7418), 1850 states have call predecessors, (7418), 1761 states have return successors, (7422), 7109 states have call predecessors, (7422), 7406 states have call successors, (7422) [2022-11-22 01:42:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21583 states to 21583 states and 30495 transitions. [2022-11-22 01:42:16,942 INFO L78 Accepts]: Start accepts. Automaton has 21583 states and 30495 transitions. Word has length 208 [2022-11-22 01:42:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:16,942 INFO L495 AbstractCegarLoop]: Abstraction has 21583 states and 30495 transitions. [2022-11-22 01:42:16,942 INFO L496 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:42:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 21583 states and 30495 transitions. [2022-11-22 01:42:16,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-22 01:42:16,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:16,949 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 9, 8, 8, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:42:16,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:42:16,950 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:42:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:16,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1296030963, now seen corresponding path program 1 times [2022-11-22 01:42:16,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:16,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927669688] [2022-11-22 01:42:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:16,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2022-11-22 01:42:17,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:17,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927669688] [2022-11-22 01:42:17,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927669688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:42:17,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:42:17,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:42:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443520439] [2022-11-22 01:42:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:42:17,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:42:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:17,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:42:17,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:42:17,415 INFO L87 Difference]: Start difference. First operand 21583 states and 30495 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:42:19,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:21,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:24,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:26,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:28,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:30,503 INFO L93 Difference]: Finished difference Result 21597 states and 30508 transitions. [2022-11-22 01:42:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:42:30,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 216 [2022-11-22 01:42:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:30,590 INFO L225 Difference]: With dead ends: 21597 [2022-11-22 01:42:30,590 INFO L226 Difference]: Without dead ends: 21595 [2022-11-22 01:42:30,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:42:30,603 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 2028 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:30,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2031 Valid, 5375 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-11-22 01:42:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21595 states. [2022-11-22 01:42:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21595 to 21595. [2022-11-22 01:42:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21595 states, 12410 states have (on average 1.2622078968573731) internal successors, (15664), 12838 states have internal predecessors, (15664), 7418 states have call successors, (7418), 1853 states have call predecessors, (7418), 1764 states have return successors, (7422), 7109 states have call predecessors, (7422), 7406 states have call successors, (7422) [2022-11-22 01:42:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21595 states to 21595 states and 30504 transitions. [2022-11-22 01:42:32,300 INFO L78 Accepts]: Start accepts. Automaton has 21595 states and 30504 transitions. Word has length 216 [2022-11-22 01:42:32,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:32,300 INFO L495 AbstractCegarLoop]: Abstraction has 21595 states and 30504 transitions. [2022-11-22 01:42:32,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:42:32,300 INFO L276 IsEmpty]: Start isEmpty. Operand 21595 states and 30504 transitions. [2022-11-22 01:42:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-22 01:42:32,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:32,306 INFO L195 NwaCegarLoop]: trace histogram [17, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:42:32,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:42:32,307 INFO L420 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:42:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1637244844, now seen corresponding path program 1 times [2022-11-22 01:42:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946650165] [2022-11-22 01:42:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2022-11-22 01:42:32,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:32,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946650165] [2022-11-22 01:42:32,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946650165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:42:32,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:42:32,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:42:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129821139] [2022-11-22 01:42:32,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:42:32,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:42:32,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:42:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:42:32,591 INFO L87 Difference]: Start difference. First operand 21595 states and 30504 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-22 01:42:35,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:36,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:39,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:42,789 INFO L93 Difference]: Finished difference Result 48077 states and 67941 transitions. [2022-11-22 01:42:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:42:42,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 214 [2022-11-22 01:42:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:42,932 INFO L225 Difference]: With dead ends: 48077 [2022-11-22 01:42:42,932 INFO L226 Difference]: Without dead ends: 26802 [2022-11-22 01:42:43,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:42:43,063 INFO L413 NwaCegarLoop]: 2708 mSDtfsCounter, 1142 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:43,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 4468 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 797 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-22 01:42:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26802 states. [2022-11-22 01:42:45,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26802 to 26629. [2022-11-22 01:42:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26629 states, 15383 states have (on average 1.2624975622440355) internal successors, (19421), 15905 states have internal predecessors, (19421), 9062 states have call successors, (9062), 2292 states have call predecessors, (9062), 2181 states have return successors, (9066), 8675 states have call predecessors, (9066), 9050 states have call successors, (9066) [2022-11-22 01:42:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26629 states to 26629 states and 37549 transitions. [2022-11-22 01:42:45,339 INFO L78 Accepts]: Start accepts. Automaton has 26629 states and 37549 transitions. Word has length 214 [2022-11-22 01:42:45,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:45,340 INFO L495 AbstractCegarLoop]: Abstraction has 26629 states and 37549 transitions. [2022-11-22 01:42:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-22 01:42:45,341 INFO L276 IsEmpty]: Start isEmpty. Operand 26629 states and 37549 transitions. [2022-11-22 01:42:45,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-22 01:42:45,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:45,345 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 10, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:42:45,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:42:45,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:42:45,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash 45242773, now seen corresponding path program 1 times [2022-11-22 01:42:45,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:45,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126412316] [2022-11-22 01:42:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:45,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2022-11-22 01:42:45,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:45,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126412316] [2022-11-22 01:42:45,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126412316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:42:45,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:42:45,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:42:45,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375189999] [2022-11-22 01:42:45,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:42:45,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:42:45,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:42:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:42:45,762 INFO L87 Difference]: Start difference. First operand 26629 states and 37549 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-22 01:42:48,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:50,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:54,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:56,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:58,732 INFO L93 Difference]: Finished difference Result 26643 states and 37562 transitions. [2022-11-22 01:42:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:42:58,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 221 [2022-11-22 01:42:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:58,838 INFO L225 Difference]: With dead ends: 26643 [2022-11-22 01:42:58,838 INFO L226 Difference]: Without dead ends: 26641 [2022-11-22 01:42:58,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:42:58,852 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 2028 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:58,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 5375 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2022-11-22 01:42:58,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26641 states. [2022-11-22 01:43:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26641 to 26641. [2022-11-22 01:43:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26641 states, 15392 states have (on average 1.2623440748440748) internal successors, (19430), 15914 states have internal predecessors, (19430), 9062 states have call successors, (9062), 2295 states have call predecessors, (9062), 2184 states have return successors, (9066), 8675 states have call predecessors, (9066), 9050 states have call successors, (9066) [2022-11-22 01:43:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26641 states to 26641 states and 37558 transitions. [2022-11-22 01:43:00,924 INFO L78 Accepts]: Start accepts. Automaton has 26641 states and 37558 transitions. Word has length 221 [2022-11-22 01:43:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:00,925 INFO L495 AbstractCegarLoop]: Abstraction has 26641 states and 37558 transitions. [2022-11-22 01:43:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-22 01:43:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 26641 states and 37558 transitions. [2022-11-22 01:43:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-22 01:43:00,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:00,930 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 11, 10, 10, 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] [2022-11-22 01:43:00,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:43:00,931 INFO L420 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:43:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash 703024042, now seen corresponding path program 1 times [2022-11-22 01:43:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:00,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665306995] [2022-11-22 01:43:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-11-22 01:43:01,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665306995] [2022-11-22 01:43:01,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665306995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:01,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:01,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:43:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353881127] [2022-11-22 01:43:01,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:01,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:43:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:43:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:01,531 INFO L87 Difference]: Start difference. First operand 26641 states and 37558 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 01:43:04,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:06,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:09,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:11,732 INFO L93 Difference]: Finished difference Result 26655 states and 37571 transitions. [2022-11-22 01:43:11,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:43:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 227 [2022-11-22 01:43:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:11,834 INFO L225 Difference]: With dead ends: 26655 [2022-11-22 01:43:11,834 INFO L226 Difference]: Without dead ends: 26651 [2022-11-22 01:43:11,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:43:11,847 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 2028 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:11,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 5375 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-22 01:43:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26651 states. [2022-11-22 01:43:13,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26651 to 26651. [2022-11-22 01:43:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26651 states, 15400 states have (on average 1.2621428571428572) internal successors, (19437), 15921 states have internal predecessors, (19437), 9062 states have call successors, (9062), 2298 states have call predecessors, (9062), 2186 states have return successors, (9066), 8675 states have call predecessors, (9066), 9050 states have call successors, (9066) [2022-11-22 01:43:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26651 states to 26651 states and 37565 transitions. [2022-11-22 01:43:13,884 INFO L78 Accepts]: Start accepts. Automaton has 26651 states and 37565 transitions. Word has length 227 [2022-11-22 01:43:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:13,884 INFO L495 AbstractCegarLoop]: Abstraction has 26651 states and 37565 transitions. [2022-11-22 01:43:13,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 01:43:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 26651 states and 37565 transitions. [2022-11-22 01:43:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-22 01:43:13,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:13,888 INFO L195 NwaCegarLoop]: trace histogram [15, 12, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:43:13,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:43:13,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:43:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash -469715778, now seen corresponding path program 1 times [2022-11-22 01:43:13,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:13,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820330986] [2022-11-22 01:43:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2022-11-22 01:43:14,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:14,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820330986] [2022-11-22 01:43:14,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820330986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:14,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:14,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:43:14,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155400039] [2022-11-22 01:43:14,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:14,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:43:14,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:14,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:43:14,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:14,284 INFO L87 Difference]: Start difference. First operand 26651 states and 37565 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 01:43:16,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:18,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:21,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:24,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:26,187 INFO L93 Difference]: Finished difference Result 26657 states and 37568 transitions. [2022-11-22 01:43:26,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:43:26,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 232 [2022-11-22 01:43:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:26,312 INFO L225 Difference]: With dead ends: 26657 [2022-11-22 01:43:26,312 INFO L226 Difference]: Without dead ends: 26534 [2022-11-22 01:43:26,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:43:26,333 INFO L413 NwaCegarLoop]: 2168 mSDtfsCounter, 1423 mSDsluCounter, 6085 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 8253 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:26,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 8253 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1158 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2022-11-22 01:43:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26534 states. [2022-11-22 01:43:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26534 to 26530. [2022-11-22 01:43:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26530 states, 15355 states have (on average 1.261348095083035) internal successors, (19368), 15853 states have internal predecessors, (19368), 8999 states have call successors, (8999), 2277 states have call predecessors, (8999), 2173 states have return successors, (9007), 8643 states have call predecessors, (9007), 8991 states have call successors, (9007) [2022-11-22 01:43:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26530 states to 26530 states and 37374 transitions. [2022-11-22 01:43:28,728 INFO L78 Accepts]: Start accepts. Automaton has 26530 states and 37374 transitions. Word has length 232 [2022-11-22 01:43:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:28,728 INFO L495 AbstractCegarLoop]: Abstraction has 26530 states and 37374 transitions. [2022-11-22 01:43:28,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 01:43:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 26530 states and 37374 transitions. [2022-11-22 01:43:28,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-22 01:43:28,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:28,736 INFO L195 NwaCegarLoop]: trace histogram [19, 11, 11, 11, 11, 11, 11, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:28,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:43:28,737 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:43:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1990009144, now seen corresponding path program 1 times [2022-11-22 01:43:28,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:28,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597685059] [2022-11-22 01:43:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:28,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-22 01:43:29,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:29,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597685059] [2022-11-22 01:43:29,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597685059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:29,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:29,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:43:29,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667616843] [2022-11-22 01:43:29,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:29,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:43:29,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:43:29,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:29,598 INFO L87 Difference]: Start difference. First operand 26530 states and 37374 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:43:37,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:40,882 INFO L93 Difference]: Finished difference Result 26547 states and 37389 transitions. [2022-11-22 01:43:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:43:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 276 [2022-11-22 01:43:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:40,993 INFO L225 Difference]: With dead ends: 26547 [2022-11-22 01:43:40,993 INFO L226 Difference]: Without dead ends: 26545 [2022-11-22 01:43:41,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:43:41,010 INFO L413 NwaCegarLoop]: 2364 mSDtfsCounter, 1491 mSDsluCounter, 6470 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 8834 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:41,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 8834 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1362 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-22 01:43:41,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26545 states. [2022-11-22 01:43:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26545 to 26530. [2022-11-22 01:43:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26530 states, 15355 states have (on average 1.2601758384890915) internal successors, (19350), 15853 states have internal predecessors, (19350), 8999 states have call successors, (8999), 2277 states have call predecessors, (8999), 2173 states have return successors, (9007), 8643 states have call predecessors, (9007), 8991 states have call successors, (9007) [2022-11-22 01:43:43,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26530 states to 26530 states and 37356 transitions. [2022-11-22 01:43:43,537 INFO L78 Accepts]: Start accepts. Automaton has 26530 states and 37356 transitions. Word has length 276 [2022-11-22 01:43:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:43,537 INFO L495 AbstractCegarLoop]: Abstraction has 26530 states and 37356 transitions. [2022-11-22 01:43:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:43:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 26530 states and 37356 transitions. [2022-11-22 01:43:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-22 01:43:43,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:43,547 INFO L195 NwaCegarLoop]: trace histogram [19, 11, 11, 11, 11, 11, 11, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:43,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 01:43:43,548 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:43:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1642619998, now seen corresponding path program 1 times [2022-11-22 01:43:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:43,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717126471] [2022-11-22 01:43:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:43,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-11-22 01:43:44,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:44,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717126471] [2022-11-22 01:43:44,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717126471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:44,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:44,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:43:44,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344219594] [2022-11-22 01:43:44,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:44,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:43:44,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:44,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:43:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:44,110 INFO L87 Difference]: Start difference. First operand 26530 states and 37356 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 01:43:46,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:51,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:53,380 INFO L93 Difference]: Finished difference Result 27000 states and 37752 transitions. [2022-11-22 01:43:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:43:53,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 297 [2022-11-22 01:43:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:53,482 INFO L225 Difference]: With dead ends: 27000 [2022-11-22 01:43:53,482 INFO L226 Difference]: Without dead ends: 26998 [2022-11-22 01:43:53,495 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:43:53,496 INFO L413 NwaCegarLoop]: 1841 mSDtfsCounter, 297 mSDsluCounter, 5294 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 7135 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:53,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 7135 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1158 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-22 01:43:53,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26998 states. [2022-11-22 01:43:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26998 to 26998. [2022-11-22 01:43:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26998 states, 15600 states have (on average 1.2555769230769231) internal successors, (19587), 16101 states have internal predecessors, (19587), 9069 states have call successors, (9069), 2431 states have call predecessors, (9069), 2327 states have return successors, (9077), 8713 states have call predecessors, (9077), 9061 states have call successors, (9077) [2022-11-22 01:43:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26998 states to 26998 states and 37733 transitions. [2022-11-22 01:43:55,793 INFO L78 Accepts]: Start accepts. Automaton has 26998 states and 37733 transitions. Word has length 297 [2022-11-22 01:43:55,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:55,794 INFO L495 AbstractCegarLoop]: Abstraction has 26998 states and 37733 transitions. [2022-11-22 01:43:55,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 01:43:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26998 states and 37733 transitions. [2022-11-22 01:43:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-22 01:43:55,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:55,828 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 13, 13, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:55,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 01:43:55,829 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:43:55,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash 729054582, now seen corresponding path program 1 times [2022-11-22 01:43:55,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:55,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228210970] [2022-11-22 01:43:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:55,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-22 01:43:56,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:56,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228210970] [2022-11-22 01:43:56,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228210970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:56,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:56,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:43:56,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136091240] [2022-11-22 01:43:56,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:56,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:56,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:56,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:56,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:56,708 INFO L87 Difference]: Start difference. First operand 26998 states and 37733 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-22 01:43:59,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:00,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:03,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:06,552 INFO L93 Difference]: Finished difference Result 56495 states and 80585 transitions. [2022-11-22 01:44:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:44:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 436 [2022-11-22 01:44:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:06,695 INFO L225 Difference]: With dead ends: 56495 [2022-11-22 01:44:06,695 INFO L226 Difference]: Without dead ends: 34577 [2022-11-22 01:44:06,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:06,768 INFO L413 NwaCegarLoop]: 2464 mSDtfsCounter, 445 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 4437 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:06,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 4437 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 695 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 01:44:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34577 states. [2022-11-22 01:44:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34577 to 27000. [2022-11-22 01:44:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27000 states, 15602 states have (on average 1.2555441610049993) internal successors, (19589), 16103 states have internal predecessors, (19589), 9069 states have call successors, (9069), 2431 states have call predecessors, (9069), 2327 states have return successors, (9077), 8713 states have call predecessors, (9077), 9061 states have call successors, (9077) [2022-11-22 01:44:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27000 states to 27000 states and 37735 transitions. [2022-11-22 01:44:09,872 INFO L78 Accepts]: Start accepts. Automaton has 27000 states and 37735 transitions. Word has length 436 [2022-11-22 01:44:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:09,873 INFO L495 AbstractCegarLoop]: Abstraction has 27000 states and 37735 transitions. [2022-11-22 01:44:09,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-22 01:44:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 27000 states and 37735 transitions. [2022-11-22 01:44:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-22 01:44:09,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:09,890 INFO L195 NwaCegarLoop]: trace histogram [25, 15, 15, 15, 15, 15, 15, 13, 13, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:09,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 01:44:09,890 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:44:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:09,891 INFO L85 PathProgramCache]: Analyzing trace with hash 890429061, now seen corresponding path program 1 times [2022-11-22 01:44:09,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:09,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549881625] [2022-11-22 01:44:09,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:09,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2022-11-22 01:44:10,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:10,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549881625] [2022-11-22 01:44:10,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549881625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:10,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:10,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:44:10,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713866331] [2022-11-22 01:44:10,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:10,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:44:10,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:44:10,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:10,358 INFO L87 Difference]: Start difference. First operand 27000 states and 37735 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-22 01:44:13,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:16,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []