./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/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_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/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_068e67be-2445-4145-8904-40edf73212e1/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 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc --- 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 00:27:45,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:27:45,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:27:45,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:27:45,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:27:45,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:27:45,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:27:45,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:27:45,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:27:45,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:27:45,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:27:45,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:27:45,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:27:45,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:27:45,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:27:45,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:27:45,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:27:45,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:27:45,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:27:45,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:27:45,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:27:45,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:27:45,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:27:45,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:27:45,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:27:45,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:27:45,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:27:45,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:27:45,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:27:45,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:27:45,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:27:45,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:27:45,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:27:45,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:27:45,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:27:45,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:27:45,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:27:45,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:27:45,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:27:45,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:27:45,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:27:45,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:27:45,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:27:45,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:27:45,802 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:27:45,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:27:45,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:27:45,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:27:45,804 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:27:45,804 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:27:45,805 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:27:45,805 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:27:45,805 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:27:45,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:27:45,806 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:27:45,806 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:27:45,806 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:27:45,806 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:27:45,807 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:27:45,807 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:27:45,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:27:45,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:27:45,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:27:45,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:27:45,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:27:45,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:27:45,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:27:45,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:27:45,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:27:45,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:27:45,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:27:45,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:27:45,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:27:45,812 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:27:45,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:27:45,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:27:45,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:27:45,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:27:45,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:27:45,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:27:45,813 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_068e67be-2445-4145-8904-40edf73212e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc [2022-11-22 00:27:46,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:27:46,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:27:46,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:27:46,233 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:27:46,234 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:27:46,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-22 00:27:49,949 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:27:50,825 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:27:50,825 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-22 00:27:50,912 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/data/beda7c1e0/5452e458855740bbbfb69b5e2bd041b0/FLAG909dab1a5 [2022-11-22 00:27:50,940 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/data/beda7c1e0/5452e458855740bbbfb69b5e2bd041b0 [2022-11-22 00:27:50,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:27:50,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:27:50,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:27:50,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:27:50,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:27:50,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:27:50" (1/1) ... [2022-11-22 00:27:50,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3079f848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:50, skipping insertion in model container [2022-11-22 00:27:50,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:27:50" (1/1) ... [2022-11-22 00:27:50,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:27:51,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:27:55,566 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_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2022-11-22 00:27:55,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2022-11-22 00:27:55,573 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2022-11-22 00:27:55,573 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2022-11-22 00:27:55,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:27:55,714 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:27:56,279 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_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2022-11-22 00:27:56,279 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_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2022-11-22 00:27:56,280 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_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2022-11-22 00:27:56,281 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_068e67be-2445-4145-8904-40edf73212e1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2022-11-22 00:27:56,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:27:56,617 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:27:56,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56 WrapperNode [2022-11-22 00:27:56,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:27:56,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:27:56,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:27:56,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:27:56,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:56,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,127 INFO L138 Inliner]: procedures = 559, calls = 2809, calls flagged for inlining = 291, calls inlined = 253, statements flattened = 5834 [2022-11-22 00:27:57,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:27:57,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:27:57,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:27:57,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:27:57,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:27:57,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:27:57,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:27:57,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:27:57,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (1/1) ... [2022-11-22 00:27:57,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:27:57,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:27:57,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:27:57,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068e67be-2445-4145-8904-40edf73212e1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:27:57,587 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 00:27:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 00:27:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:27:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:27:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 00:27:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 00:27:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 00:27:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 00:27:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:27:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:27:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 00:27:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 00:27:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:27:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:27:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2022-11-22 00:27:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2022-11-22 00:27:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_80 [2022-11-22 00:27:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_80 [2022-11-22 00:27:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 00:27:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 00:27:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 00:27:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 00:27:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 00:27:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 00:27:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 00:27:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 00:27:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 00:27:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 00:27:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2022-11-22 00:27:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2022-11-22 00:27:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-22 00:27:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-22 00:27:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 00:27:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 00:27:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2022-11-22 00:27:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2022-11-22 00:27:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 00:27:57,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 00:27:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:27:57,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:27:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 00:27:57,598 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 00:27:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 00:27:57,598 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 00:27:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 00:27:57,599 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 00:27:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:27:57,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:27:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 00:27:57,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 00:27:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:27:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_62 [2022-11-22 00:27:57,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_62 [2022-11-22 00:27:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-22 00:27:57,601 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-22 00:27:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2022-11-22 00:27:57,601 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2022-11-22 00:27:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:27:57,602 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:27:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 00:27:57,602 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 00:27:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2022-11-22 00:27:57,603 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2022-11-22 00:27:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 00:27:57,603 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 00:27:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:27:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:27:57,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:27:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2022-11-22 00:27:57,604 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2022-11-22 00:27:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:27:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 00:27:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 00:27:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 00:27:57,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 00:27:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:27:57,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:27:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2022-11-22 00:27:57,607 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2022-11-22 00:27:57,607 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-22 00:27:57,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-22 00:27:57,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 00:27:57,608 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 00:27:57,608 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 00:27:57,608 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 00:27:57,608 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2022-11-22 00:27:57,609 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2022-11-22 00:27:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:27:57,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:27:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2022-11-22 00:27:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2022-11-22 00:27:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:27:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 00:27:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 00:27:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 00:27:57,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 00:27:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 00:27:57,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 00:27:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 00:27:57,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 00:27:57,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:27:57,612 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-22 00:27:57,612 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-22 00:27:57,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:27:57,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:27:57,613 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 00:27:57,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 00:27:57,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:27:57,614 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 00:27:57,614 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-22 00:27:57,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-22 00:27:57,615 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:27:57,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:27:57,615 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2022-11-22 00:27:57,615 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2022-11-22 00:27:57,616 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:27:57,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:27:57,616 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2022-11-22 00:27:57,616 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2022-11-22 00:27:57,617 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-22 00:27:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-22 00:27:57,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rhine_private [2022-11-22 00:27:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rhine_private [2022-11-22 00:27:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 00:27:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 00:27:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-22 00:27:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-22 00:27:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:27:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:27:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 00:27:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 00:27:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-22 00:27:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-22 00:27:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 00:27:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 00:27:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_68 [2022-11-22 00:27:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_68 [2022-11-22 00:27:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2022-11-22 00:27:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2022-11-22 00:27:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2022-11-22 00:27:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2022-11-22 00:27:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rhine_private [2022-11-22 00:27:57,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rhine_private [2022-11-22 00:27:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 00:27:57,622 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 00:27:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:27:57,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:27:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 00:27:57,623 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 00:27:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:27:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:27:57,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:27:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:27:57,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:27:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 00:27:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2022-11-22 00:27:57,625 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2022-11-22 00:27:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 00:27:57,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 00:27:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 00:27:57,626 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 00:27:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:27:57,626 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:27:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2022-11-22 00:27:57,626 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2022-11-22 00:27:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-22 00:27:57,627 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-22 00:27:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:27:57,627 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:27:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2022-11-22 00:27:57,628 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2022-11-22 00:27:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-22 00:27:57,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-22 00:27:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 00:27:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 00:27:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2022-11-22 00:27:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2022-11-22 00:27:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_79 [2022-11-22 00:27:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_79 [2022-11-22 00:27:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 00:27:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 00:27:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:27:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 00:27:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 00:27:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 00:27:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 00:27:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:27:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2022-11-22 00:27:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2022-11-22 00:27:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-22 00:27:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-22 00:27:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:27:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2022-11-22 00:27:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2022-11-22 00:27:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2022-11-22 00:27:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2022-11-22 00:27:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 00:27:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 00:27:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-22 00:27:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-22 00:27:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2022-11-22 00:27:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2022-11-22 00:27:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2022-11-22 00:27:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2022-11-22 00:27:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-22 00:27:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-22 00:27:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 00:27:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 00:27:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:27:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:27:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-22 00:27:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-22 00:27:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:27:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:27:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 00:27:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 00:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 00:27:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 00:27:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:27:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:27:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 00:27:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 00:27:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_63 [2022-11-22 00:27:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_63 [2022-11-22 00:27:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2022-11-22 00:27:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2022-11-22 00:27:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2022-11-22 00:27:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2022-11-22 00:27:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:27:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:27:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2022-11-22 00:27:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2022-11-22 00:27:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:27:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_67 [2022-11-22 00:27:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_67 [2022-11-22 00:27:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:27:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:27:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-22 00:27:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-22 00:27:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 00:27:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 00:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2022-11-22 00:27:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2022-11-22 00:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2022-11-22 00:27:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2022-11-22 00:27:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2022-11-22 00:27:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2022-11-22 00:27:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2022-11-22 00:27:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2022-11-22 00:27:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-22 00:27:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-22 00:27:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:27:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:27:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 00:27:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 00:27:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 00:27:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 00:27:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2022-11-22 00:27:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2022-11-22 00:27:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2022-11-22 00:27:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2022-11-22 00:27:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 00:27:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 00:27:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-22 00:27:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-22 00:27:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:27:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2022-11-22 00:27:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2022-11-22 00:27:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2022-11-22 00:27:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2022-11-22 00:27:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:27:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:27:58,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:27:58,883 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:27:59,227 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:38:33,359 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 00:38:33,513 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:38:37,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:38:37,660 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-22 00:38:37,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:38:37 BoogieIcfgContainer [2022-11-22 00:38:37,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:38:37,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:38:37,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:38:37,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:38:37,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:27:50" (1/3) ... [2022-11-22 00:38:37,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a53573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:38:37, skipping insertion in model container [2022-11-22 00:38:37,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:56" (2/3) ... [2022-11-22 00:38:37,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a53573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:38:37, skipping insertion in model container [2022-11-22 00:38:37,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:38:37" (3/3) ... [2022-11-22 00:38:37,683 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-22 00:38:37,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:38:37,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 00:38:37,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:38:37,853 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;@33a33513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:38:37,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 00:38:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) [2022-11-22 00:38:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-22 00:38:37,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:37,917 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-22 00:38:37,917 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 00:38:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1548668371, now seen corresponding path program 1 times [2022-11-22 00:38:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:37,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458023926] [2022-11-22 00:38:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:37,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-22 00:38:41,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:41,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458023926] [2022-11-22 00:38:41,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458023926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:41,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:41,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:38:41,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106530832] [2022-11-22 00:38:41,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:41,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:38:41,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:41,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:38:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:38:41,863 INFO L87 Difference]: Start difference. First operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 00:38:44,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:50,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:50,476 INFO L93 Difference]: Finished difference Result 4901 states and 7279 transitions. [2022-11-22 00:38:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:38:50,480 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 165 [2022-11-22 00:38:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:50,534 INFO L225 Difference]: With dead ends: 4901 [2022-11-22 00:38:50,534 INFO L226 Difference]: Without dead ends: 3233 [2022-11-22 00:38:50,554 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 00:38:50,558 INFO L413 NwaCegarLoop]: 2632 mSDtfsCounter, 2301 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:50,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 4676 Invalid, 728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 718 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-22 00:38:50,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2022-11-22 00:38:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3229. [2022-11-22 00:38:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 1836 states have (on average 1.3044662309368191) internal successors, (2395), 1931 states have internal predecessors, (2395), 1140 states have call successors, (1140), 251 states have call predecessors, (1140), 250 states have return successors, (1136), 1110 states have call predecessors, (1136), 1136 states have call successors, (1136) [2022-11-22 00:38:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4671 transitions. [2022-11-22 00:38:51,025 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4671 transitions. Word has length 165 [2022-11-22 00:38:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:51,029 INFO L495 AbstractCegarLoop]: Abstraction has 3229 states and 4671 transitions. [2022-11-22 00:38:51,029 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 00:38:51,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4671 transitions. [2022-11-22 00:38:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-22 00:38:51,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:51,054 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:51,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:38:51,055 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 00:38:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:51,056 INFO L85 PathProgramCache]: Analyzing trace with hash -535378237, now seen corresponding path program 1 times [2022-11-22 00:38:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:51,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094066088] [2022-11-22 00:38:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:51,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-22 00:38:53,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:53,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094066088] [2022-11-22 00:38:53,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094066088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:53,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:53,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:38:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582537070] [2022-11-22 00:38:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:53,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:38:53,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:53,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:38:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:38:53,341 INFO L87 Difference]: Start difference. First operand 3229 states and 4671 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 00:38:55,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:58,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:03,581 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 00:39:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:03,668 INFO L93 Difference]: Finished difference Result 9107 states and 13119 transitions. [2022-11-22 00:39:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:39:03,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2022-11-22 00:39:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:03,718 INFO L225 Difference]: With dead ends: 9107 [2022-11-22 00:39:03,719 INFO L226 Difference]: Without dead ends: 5907 [2022-11-22 00:39:03,735 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 00:39:03,736 INFO L413 NwaCegarLoop]: 2549 mSDtfsCounter, 1960 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 4557 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:03,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 4557 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 733 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-11-22 00:39:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5907 states. [2022-11-22 00:39:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 5878. [2022-11-22 00:39:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 3331 states have (on average 1.2957069948964275) internal successors, (4316), 3511 states have internal predecessors, (4316), 2065 states have call successors, (2065), 482 states have call predecessors, (2065), 479 states have return successors, (2063), 2002 states have call predecessors, (2063), 2061 states have call successors, (2063) [2022-11-22 00:39:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 8444 transitions. [2022-11-22 00:39:04,154 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 8444 transitions. Word has length 169 [2022-11-22 00:39:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:04,155 INFO L495 AbstractCegarLoop]: Abstraction has 5878 states and 8444 transitions. [2022-11-22 00:39:04,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 00:39:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 8444 transitions. [2022-11-22 00:39:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-22 00:39:04,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:04,162 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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 00:39:04,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:39:04,162 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 00:39:04,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:04,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1923686432, now seen corresponding path program 1 times [2022-11-22 00:39:04,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:04,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930327243] [2022-11-22 00:39:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:04,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-22 00:39:06,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:06,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930327243] [2022-11-22 00:39:06,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930327243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:06,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:06,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:39:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812404542] [2022-11-22 00:39:06,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:06,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:39:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:39:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:39:07,002 INFO L87 Difference]: Start difference. First operand 5878 states and 8444 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 00:39:09,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:15,815 INFO L93 Difference]: Finished difference Result 16804 states and 24074 transitions. [2022-11-22 00:39:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:39:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2022-11-22 00:39:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:15,903 INFO L225 Difference]: With dead ends: 16804 [2022-11-22 00:39:15,903 INFO L226 Difference]: Without dead ends: 10955 [2022-11-22 00:39:15,937 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 00:39:15,938 INFO L413 NwaCegarLoop]: 2741 mSDtfsCounter, 2042 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 4746 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:15,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 4746 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 802 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-22 00:39:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2022-11-22 00:39:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 10922. [2022-11-22 00:39:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10922 states, 6167 states have (on average 1.2790659964326252) internal successors, (7888), 6497 states have internal predecessors, (7888), 3817 states have call successors, (3817), 940 states have call predecessors, (3817), 935 states have return successors, (3815), 3700 states have call predecessors, (3815), 3813 states have call successors, (3815) [2022-11-22 00:39:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10922 states to 10922 states and 15520 transitions. [2022-11-22 00:39:16,751 INFO L78 Accepts]: Start accepts. Automaton has 10922 states and 15520 transitions. Word has length 186 [2022-11-22 00:39:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:16,753 INFO L495 AbstractCegarLoop]: Abstraction has 10922 states and 15520 transitions. [2022-11-22 00:39:16,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 00:39:16,755 INFO L276 IsEmpty]: Start isEmpty. Operand 10922 states and 15520 transitions. [2022-11-22 00:39:16,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-22 00:39:16,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:16,761 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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 00:39:16,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:39:16,761 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 00:39:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash 571403285, now seen corresponding path program 1 times [2022-11-22 00:39:16,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:16,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109602201] [2022-11-22 00:39:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-22 00:39:21,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:21,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109602201] [2022-11-22 00:39:21,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109602201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:21,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:21,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:39:21,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380013900] [2022-11-22 00:39:21,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:21,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:39:21,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:21,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:39:21,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:39:21,562 INFO L87 Difference]: Start difference. First operand 10922 states and 15520 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 00:39:23,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:42,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:42,741 INFO L93 Difference]: Finished difference Result 27780 states and 39324 transitions. [2022-11-22 00:39:42,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:39:42,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2022-11-22 00:39:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:42,896 INFO L225 Difference]: With dead ends: 27780 [2022-11-22 00:39:42,896 INFO L226 Difference]: Without dead ends: 16887 [2022-11-22 00:39:42,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:39:42,971 INFO L413 NwaCegarLoop]: 3352 mSDtfsCounter, 5927 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 1205 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6066 SdHoareTripleChecker+Valid, 7696 SdHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:42,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6066 Valid, 7696 Invalid, 4582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1205 Valid, 3376 Invalid, 1 Unknown, 0 Unchecked, 19.9s Time] [2022-11-22 00:39:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16887 states. [2022-11-22 00:39:44,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16887 to 16817. [2022-11-22 00:39:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16817 states, 9511 states have (on average 1.2726316896225423) internal successors, (12104), 10020 states have internal predecessors, (12104), 5780 states have call successors, (5780), 1536 states have call predecessors, (5780), 1523 states have return successors, (5779), 5569 states have call predecessors, (5779), 5776 states have call successors, (5779) [2022-11-22 00:39:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 23663 transitions. [2022-11-22 00:39:44,434 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 23663 transitions. Word has length 181 [2022-11-22 00:39:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:44,435 INFO L495 AbstractCegarLoop]: Abstraction has 16817 states and 23663 transitions. [2022-11-22 00:39:44,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 00:39:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 23663 transitions. [2022-11-22 00:39:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-22 00:39:44,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:44,446 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2022-11-22 00:39:44,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:39:44,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:39:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1376607584, now seen corresponding path program 1 times [2022-11-22 00:39:44,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:44,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590881518] [2022-11-22 00:39:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-11-22 00:39:46,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:46,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590881518] [2022-11-22 00:39:46,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590881518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:46,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:46,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:39:46,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021533645] [2022-11-22 00:39:46,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:39:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:46,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:39:46,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:39:46,738 INFO L87 Difference]: Start difference. First operand 16817 states and 23663 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 00:39:48,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:55,380 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 00:39:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:56,966 INFO L93 Difference]: Finished difference Result 46587 states and 65606 transitions. [2022-11-22 00:39:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:39:56,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 206 [2022-11-22 00:39:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:57,154 INFO L225 Difference]: With dead ends: 46587 [2022-11-22 00:39:57,154 INFO L226 Difference]: Without dead ends: 29799 [2022-11-22 00:39:57,236 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 00:39:57,237 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2271 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 4982 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:57,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 4982 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 812 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-22 00:39:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2022-11-22 00:39:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29750. [2022-11-22 00:39:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29750 states, 16841 states have (on average 1.2694614334065673) internal successors, (21379), 17778 states have internal predecessors, (21379), 10209 states have call successors, (10209), 2722 states have call predecessors, (10209), 2697 states have return successors, (10211), 9809 states have call predecessors, (10211), 10205 states have call successors, (10211) [2022-11-22 00:39:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29750 states to 29750 states and 41799 transitions. [2022-11-22 00:39:59,714 INFO L78 Accepts]: Start accepts. Automaton has 29750 states and 41799 transitions. Word has length 206 [2022-11-22 00:39:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:59,715 INFO L495 AbstractCegarLoop]: Abstraction has 29750 states and 41799 transitions. [2022-11-22 00:39:59,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 00:39:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 29750 states and 41799 transitions. [2022-11-22 00:39:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-22 00:39:59,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:59,722 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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] [2022-11-22 00:39:59,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:39:59,723 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 00:39:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1489855820, now seen corresponding path program 1 times [2022-11-22 00:39:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:59,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574374192] [2022-11-22 00:39:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:40:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:40:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2022-11-22 00:40:03,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:40:03,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574374192] [2022-11-22 00:40:03,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574374192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:40:03,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:40:03,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:40:03,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700705092] [2022-11-22 00:40:03,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:40:03,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:40:03,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:40:03,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:40:03,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:40:03,762 INFO L87 Difference]: Start difference. First operand 29750 states and 41799 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 00:40:05,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:40:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:40:14,467 INFO L93 Difference]: Finished difference Result 30070 states and 42117 transitions. [2022-11-22 00:40:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:40:14,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 209 [2022-11-22 00:40:14,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:40:14,648 INFO L225 Difference]: With dead ends: 30070 [2022-11-22 00:40:14,648 INFO L226 Difference]: Without dead ends: 30068 [2022-11-22 00:40:14,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:40:14,667 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 2334 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 6195 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:40:14,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 6195 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1067 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-22 00:40:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30068 states. [2022-11-22 00:40:17,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30068 to 30066. [2022-11-22 00:40:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30066 states, 17024 states have (on average 1.2686795112781954) internal successors, (21598), 17985 states have internal predecessors, (21598), 10257 states have call successors, (10257), 2807 states have call predecessors, (10257), 2782 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-22 00:40:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30066 states to 30066 states and 42114 transitions. [2022-11-22 00:40:17,564 INFO L78 Accepts]: Start accepts. Automaton has 30066 states and 42114 transitions. Word has length 209 [2022-11-22 00:40:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:40:17,565 INFO L495 AbstractCegarLoop]: Abstraction has 30066 states and 42114 transitions. [2022-11-22 00:40:17,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 00:40:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 30066 states and 42114 transitions. [2022-11-22 00:40:17,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-22 00:40:17,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:40:17,573 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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] [2022-11-22 00:40:17,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:40:17,574 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 00:40:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:40:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1714908220, now seen corresponding path program 1 times [2022-11-22 00:40:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:40:17,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209017818] [2022-11-22 00:40:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:40:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:40:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:40:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-22 00:40:21,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:40:21,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209017818] [2022-11-22 00:40:21,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209017818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:40:21,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:40:21,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:40:21,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913262794] [2022-11-22 00:40:21,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:40:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:40:21,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:40:21,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:40:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:40:21,886 INFO L87 Difference]: Start difference. First operand 30066 states and 42114 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 00:40:24,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:40:30,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:40:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:40:32,550 INFO L93 Difference]: Finished difference Result 30072 states and 42119 transitions. [2022-11-22 00:40:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:40:32,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 213 [2022-11-22 00:40:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:40:32,728 INFO L225 Difference]: With dead ends: 30072 [2022-11-22 00:40:32,728 INFO L226 Difference]: Without dead ends: 30070 [2022-11-22 00:40:32,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:40:32,748 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2341 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:40:32,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 6155 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-22 00:40:32,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30070 states. [2022-11-22 00:40:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30070 to 30070. [2022-11-22 00:40:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30070 states, 17027 states have (on average 1.2686321724320198) internal successors, (21601), 17988 states have internal predecessors, (21601), 10257 states have call successors, (10257), 2808 states have call predecessors, (10257), 2783 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-22 00:40:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30070 states to 30070 states and 42117 transitions. [2022-11-22 00:40:35,539 INFO L78 Accepts]: Start accepts. Automaton has 30070 states and 42117 transitions. Word has length 213 [2022-11-22 00:40:35,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:40:35,540 INFO L495 AbstractCegarLoop]: Abstraction has 30070 states and 42117 transitions. [2022-11-22 00:40:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 00:40:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 30070 states and 42117 transitions. [2022-11-22 00:40:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-22 00:40:35,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:40:35,548 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 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] [2022-11-22 00:40:35,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:40:35,549 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 00:40:35,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:40:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash 366318572, now seen corresponding path program 1 times [2022-11-22 00:40:35,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:40:35,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914915641] [2022-11-22 00:40:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:40:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:40:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:40:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2022-11-22 00:40:39,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:40:39,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914915641] [2022-11-22 00:40:39,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914915641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:40:39,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:40:39,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:40:39,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811910022] [2022-11-22 00:40:39,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:40:39,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:40:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:40:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:40:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:40:39,349 INFO L87 Difference]: Start difference. First operand 30070 states and 42117 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 00:40:41,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:40:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:40:50,117 INFO L93 Difference]: Finished difference Result 30076 states and 42122 transitions. [2022-11-22 00:40:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:40:50,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 219 [2022-11-22 00:40:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:40:50,278 INFO L225 Difference]: With dead ends: 30076 [2022-11-22 00:40:50,278 INFO L226 Difference]: Without dead ends: 30074 [2022-11-22 00:40:50,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:40:50,296 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2341 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:40:50,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2350 Valid, 6155 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-22 00:40:50,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30074 states. [2022-11-22 00:40:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30074 to 30074. [2022-11-22 00:40:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30074 states, 17030 states have (on average 1.2685848502642396) internal successors, (21604), 17991 states have internal predecessors, (21604), 10257 states have call successors, (10257), 2809 states have call predecessors, (10257), 2784 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-22 00:40:52,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30074 states to 30074 states and 42120 transitions. [2022-11-22 00:40:52,388 INFO L78 Accepts]: Start accepts. Automaton has 30074 states and 42120 transitions. Word has length 219 [2022-11-22 00:40:52,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:40:52,389 INFO L495 AbstractCegarLoop]: Abstraction has 30074 states and 42120 transitions. [2022-11-22 00:40:52,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 00:40:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 30074 states and 42120 transitions. [2022-11-22 00:40:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-22 00:40:52,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:40:52,399 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:40:52,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:40:52,400 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 00:40:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:40:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1919163292, now seen corresponding path program 1 times [2022-11-22 00:40:52,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:40:52,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623963928] [2022-11-22 00:40:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:40:52,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:40:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:40:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2022-11-22 00:40:56,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:40:56,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623963928] [2022-11-22 00:40:56,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623963928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:40:56,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:40:56,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:40:56,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778409444] [2022-11-22 00:40:56,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:40:56,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:40:56,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:40:56,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:40:56,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:40:56,303 INFO L87 Difference]: Start difference. First operand 30074 states and 42120 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:40:58,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:04,312 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 00:41:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:41:06,739 INFO L93 Difference]: Finished difference Result 30080 states and 42125 transitions. [2022-11-22 00:41:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:41:06,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 223 [2022-11-22 00:41:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:41:06,878 INFO L225 Difference]: With dead ends: 30080 [2022-11-22 00:41:06,878 INFO L226 Difference]: Without dead ends: 30078 [2022-11-22 00:41:06,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:41:06,896 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2341 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:41:06,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 6155 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-22 00:41:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30078 states. [2022-11-22 00:41:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30078 to 30078. [2022-11-22 00:41:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30078 states, 17033 states have (on average 1.2685375447660423) internal successors, (21607), 17994 states have internal predecessors, (21607), 10257 states have call successors, (10257), 2810 states have call predecessors, (10257), 2785 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-22 00:41:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30078 states to 30078 states and 42123 transitions. [2022-11-22 00:41:09,522 INFO L78 Accepts]: Start accepts. Automaton has 30078 states and 42123 transitions. Word has length 223 [2022-11-22 00:41:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:41:09,523 INFO L495 AbstractCegarLoop]: Abstraction has 30078 states and 42123 transitions. [2022-11-22 00:41:09,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:41:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 30078 states and 42123 transitions. [2022-11-22 00:41:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-22 00:41:09,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:41:09,534 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:41:09,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:41:09,535 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 00:41:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:41:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1918741132, now seen corresponding path program 1 times [2022-11-22 00:41:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:41:09,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960201562] [2022-11-22 00:41:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:09,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:41:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:41:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2022-11-22 00:41:12,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:41:12,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960201562] [2022-11-22 00:41:12,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960201562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:41:12,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:41:12,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:41:12,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013540313] [2022-11-22 00:41:12,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:41:12,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:41:12,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:41:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:41:12,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:41:12,908 INFO L87 Difference]: Start difference. First operand 30078 states and 42123 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 00:41:15,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:22,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:41:24,687 INFO L93 Difference]: Finished difference Result 30084 states and 42128 transitions. [2022-11-22 00:41:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:41:24,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 229 [2022-11-22 00:41:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:41:24,821 INFO L225 Difference]: With dead ends: 30084 [2022-11-22 00:41:24,821 INFO L226 Difference]: Without dead ends: 30082 [2022-11-22 00:41:24,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:41:24,832 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2341 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:41:24,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 6155 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-22 00:41:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2022-11-22 00:41:26,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 30082. [2022-11-22 00:41:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30082 states, 17036 states have (on average 1.2684902559286217) internal successors, (21610), 17997 states have internal predecessors, (21610), 10257 states have call successors, (10257), 2811 states have call predecessors, (10257), 2786 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-22 00:41:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30082 states to 30082 states and 42126 transitions. [2022-11-22 00:41:26,941 INFO L78 Accepts]: Start accepts. Automaton has 30082 states and 42126 transitions. Word has length 229 [2022-11-22 00:41:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:41:26,942 INFO L495 AbstractCegarLoop]: Abstraction has 30082 states and 42126 transitions. [2022-11-22 00:41:26,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 00:41:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 30082 states and 42126 transitions. [2022-11-22 00:41:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-22 00:41:26,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:41:26,952 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 3, 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] [2022-11-22 00:41:26,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:41:26,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 00:41:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:41:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash 195513207, now seen corresponding path program 1 times [2022-11-22 00:41:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:41:26,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408290277] [2022-11-22 00:41:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:26,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:41:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:41:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-22 00:41:28,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:41:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408290277] [2022-11-22 00:41:28,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408290277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:41:28,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:41:28,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:41:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356902973] [2022-11-22 00:41:28,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:41:28,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:41:28,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:41:28,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:41:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:41:28,698 INFO L87 Difference]: Start difference. First operand 30082 states and 42126 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-22 00:41:30,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:37,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:41:40,890 INFO L93 Difference]: Finished difference Result 86528 states and 121244 transitions. [2022-11-22 00:41:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:41:40,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 249 [2022-11-22 00:41:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:41:41,116 INFO L225 Difference]: With dead ends: 86528 [2022-11-22 00:41:41,117 INFO L226 Difference]: Without dead ends: 56475 [2022-11-22 00:41:41,225 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 00:41:41,226 INFO L413 NwaCegarLoop]: 2653 mSDtfsCounter, 2334 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:41:41,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 4703 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 711 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-22 00:41:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56475 states. [2022-11-22 00:41:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56475 to 56382. [2022-11-22 00:41:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56382 states, 32033 states have (on average 1.2699091561826865) internal successors, (40679), 33897 states have internal predecessors, (40679), 19139 states have call successors, (19139), 5256 states have call predecessors, (19139), 5207 states have return successors, (19147), 18324 states have call predecessors, (19147), 19135 states have call successors, (19147) [2022-11-22 00:41:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56382 states to 56382 states and 78965 transitions. [2022-11-22 00:41:45,637 INFO L78 Accepts]: Start accepts. Automaton has 56382 states and 78965 transitions. Word has length 249 [2022-11-22 00:41:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:41:45,638 INFO L495 AbstractCegarLoop]: Abstraction has 56382 states and 78965 transitions. [2022-11-22 00:41:45,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-22 00:41:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 56382 states and 78965 transitions. [2022-11-22 00:41:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-22 00:41:45,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:41:45,646 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:41:45,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:41:45,647 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 00:41:45,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:41:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2091638697, now seen corresponding path program 1 times [2022-11-22 00:41:45,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:41:45,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589301201] [2022-11-22 00:41:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:41:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat