./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/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_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/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_7f45e05b-c562-4bad-a944-9fb9175f13aa/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 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- 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 00:25:37,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:25:37,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:25:37,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:25:37,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:25:37,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:25:37,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:25:37,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:25:37,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:25:37,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:25:37,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:25:37,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:25:37,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:25:37,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:25:37,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:25:37,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:25:37,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:25:37,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:25:37,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:25:37,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:25:37,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:25:37,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:25:37,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:25:37,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:25:37,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:25:37,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:25:37,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:25:37,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:25:37,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:25:37,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:25:37,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:25:37,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:25:37,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:25:37,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:25:37,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:25:37,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:25:37,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:25:37,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:25:37,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:25:37,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:25:37,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:25:37,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:25:37,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:25:37,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:25:37,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:25:37,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:25:38,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:25:38,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:25:38,004 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:25:38,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:25:38,004 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:25:38,005 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:25:38,005 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:25:38,005 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:25:38,005 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:25:38,006 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:25:38,006 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:25:38,006 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:25:38,007 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:25:38,007 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:25:38,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:25:38,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:25:38,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:25:38,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:25:38,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:25:38,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:25:38,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:25:38,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:25:38,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:25:38,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:25:38,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:25:38,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:25:38,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:25:38,011 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:25:38,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:25:38,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:25:38,012 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:25:38,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:25:38,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:25:38,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:25:38,012 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2022-11-22 00:25:38,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:25:38,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:25:38,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:25:38,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:25:38,307 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:25:38,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2022-11-22 00:25:41,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:25:42,066 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:25:42,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2022-11-22 00:25:42,121 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/data/9039ea3b3/6ad92a39b9234f7daa81902e72e1e312/FLAGf39100af2 [2022-11-22 00:25:42,139 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/data/9039ea3b3/6ad92a39b9234f7daa81902e72e1e312 [2022-11-22 00:25:42,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:25:42,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:25:42,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:25:42,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:25:42,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:25:42,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:25:42" (1/1) ... [2022-11-22 00:25:42,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b3bc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:42, skipping insertion in model container [2022-11-22 00:25:42,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:25:42" (1/1) ... [2022-11-22 00:25:42,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:25:42,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:25:45,076 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2022-11-22 00:25:45,080 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2022-11-22 00:25:45,081 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2022-11-22 00:25:45,081 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2022-11-22 00:25:45,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:25:45,190 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:25:45,566 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2022-11-22 00:25:45,567 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2022-11-22 00:25:45,567 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2022-11-22 00:25:45,567 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_7f45e05b-c562-4bad-a944-9fb9175f13aa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2022-11-22 00:25:45,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:25:45,808 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:25:45,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45 WrapperNode [2022-11-22 00:25:45,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:25:45,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:25:45,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:25:45,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:25:45,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:45,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,093 INFO L138 Inliner]: procedures = 451, calls = 2191, calls flagged for inlining = 220, calls inlined = 194, statements flattened = 4738 [2022-11-22 00:25:46,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:25:46,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:25:46,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:25:46,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:25:46,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,329 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:25:46,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:25:46,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:25:46,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:25:46,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (1/1) ... [2022-11-22 00:25:46,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:25:46,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:25:46,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:25:46,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:25:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-22 00:25:46,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-22 00:25:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 00:25:46,508 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 00:25:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:25:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:25:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_begin [2022-11-22 00:25:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_begin [2022-11-22 00:25:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 00:25:46,510 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 00:25:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 00:25:46,510 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 00:25:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:25:46,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:25:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:25:46,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:25:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 00:25:46,511 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 00:25:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 00:25:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 00:25:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 00:25:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 00:25:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2022-11-22 00:25:46,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2022-11-22 00:25:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 00:25:46,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 00:25:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:25:46,515 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:25:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 00:25:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 00:25:46,516 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 00:25:46,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:25:46,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:25:46,516 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 00:25:46,517 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 00:25:46,517 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 00:25:46,517 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 00:25:46,517 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 00:25:46,517 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 00:25:46,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:25:46,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:25:46,518 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 00:25:46,518 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 00:25:46,519 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 00:25:46,519 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 00:25:46,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:25:46,519 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:25:46,520 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:25:46,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:25:46,520 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 00:25:46,520 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 00:25:46,520 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 00:25:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 00:25:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:25:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:25:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:25:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure epic_open [2022-11-22 00:25:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_open [2022-11-22 00:25:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:25:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 00:25:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 00:25:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 00:25:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 00:25:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:25:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:25:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 00:25:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 00:25:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 00:25:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 00:25:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:25:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:25:46,526 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 00:25:46,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 00:25:46,526 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 00:25:46,527 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 00:25:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure epic_restart [2022-11-22 00:25:46,527 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_restart [2022-11-22 00:25:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2022-11-22 00:25:46,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2022-11-22 00:25:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:25:46,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:25:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:25:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 00:25:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 00:25:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 00:25:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 00:25:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:25:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-22 00:25:46,530 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-22 00:25:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:25:46,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:25:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 00:25:46,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 00:25:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:25:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-22 00:25:46,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-22 00:25:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:25:46,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:25:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_epic_private [2022-11-22 00:25:46,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_epic_private [2022-11-22 00:25:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-22 00:25:46,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-22 00:25:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 00:25:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 00:25:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 00:25:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 00:25:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-22 00:25:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-22 00:25:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:25:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:25:46,540 INFO L130 BoogieDeclarations]: Found specification of procedure epic_remove_one [2022-11-22 00:25:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_remove_one [2022-11-22 00:25:46,541 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 00:25:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 00:25:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 00:25:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 00:25:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_napi_lock_of_epic_private [2022-11-22 00:25:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_napi_lock_of_epic_private [2022-11-22 00:25:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 00:25:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 00:25:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 00:25:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 00:25:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:25:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:25:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:25:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:25:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:25:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:25:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:25:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:25:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure epic_rx [2022-11-22 00:25:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_rx [2022-11-22 00:25:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_complete [2022-11-22 00:25:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_complete [2022-11-22 00:25:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 00:25:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 00:25:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_napi_lock_of_epic_private [2022-11-22 00:25:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_napi_lock_of_epic_private [2022-11-22 00:25:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 00:25:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 00:25:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:25:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:25:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:25:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:25:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 00:25:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 00:25:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 00:25:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 00:25:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:25:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2022-11-22 00:25:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2022-11-22 00:25:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure epic_resume [2022-11-22 00:25:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_resume [2022-11-22 00:25:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 00:25:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 00:25:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:25:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure epic_tx_timeout [2022-11-22 00:25:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_tx_timeout [2022-11-22 00:25:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 00:25:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 00:25:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:25:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:25:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:25:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:25:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:25:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 00:25:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 00:25:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:25:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:25:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 00:25:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 00:25:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure epic_close [2022-11-22 00:25:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_close [2022-11-22 00:25:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:25:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:25:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:25:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:25:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:25:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 00:25:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 00:25:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_epic_private [2022-11-22 00:25:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_epic_private [2022-11-22 00:25:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:25:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:25:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 00:25:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 00:25:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:25:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:25:46,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:25:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure epic_pause [2022-11-22 00:25:46,561 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_pause [2022-11-22 00:25:47,394 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:25:47,398 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:25:47,984 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:25:51,053 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 00:25:51,181 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:25:52,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:25:52,336 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:25:52,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:25:52 BoogieIcfgContainer [2022-11-22 00:25:52,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:25:52,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:25:52,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:25:52,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:25:52,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:25:42" (1/3) ... [2022-11-22 00:25:52,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0be7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:25:52, skipping insertion in model container [2022-11-22 00:25:52,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:25:45" (2/3) ... [2022-11-22 00:25:52,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0be7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:25:52, skipping insertion in model container [2022-11-22 00:25:52,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:25:52" (3/3) ... [2022-11-22 00:25:52,349 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2022-11-22 00:25:52,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:25:52,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 00:25:52,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:25:52,449 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;@1ecf7123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:25:52,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 00:25:52,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 1244 states, 714 states have (on average 1.2997198879551821) internal successors, (928), 748 states have internal predecessors, (928), 441 states have call successors, (441), 87 states have call predecessors, (441), 86 states have return successors, (435), 430 states have call predecessors, (435), 435 states have call successors, (435) [2022-11-22 00:25:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-22 00:25:52,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:25:52,477 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:52,477 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 00:25:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:25:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash 548572248, now seen corresponding path program 1 times [2022-11-22 00:25:52,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:25:52,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367477827] [2022-11-22 00:25:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:25:52,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:25:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:25:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 00:25:53,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:25:53,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367477827] [2022-11-22 00:25:53,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367477827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:25:53,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:25:53,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:25:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470193614] [2022-11-22 00:25:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:25:53,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:25:53,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:25:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:25:53,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:25:53,374 INFO L87 Difference]: Start difference. First operand has 1244 states, 714 states have (on average 1.2997198879551821) internal successors, (928), 748 states have internal predecessors, (928), 441 states have call successors, (441), 87 states have call predecessors, (441), 86 states have return successors, (435), 430 states have call predecessors, (435), 435 states have call successors, (435) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 00:25:55,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:25:55,781 INFO L93 Difference]: Finished difference Result 3619 states and 5297 transitions. [2022-11-22 00:25:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:25:55,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-22 00:25:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:25:55,819 INFO L225 Difference]: With dead ends: 3619 [2022-11-22 00:25:55,819 INFO L226 Difference]: Without dead ends: 2384 [2022-11-22 00:25:55,836 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 00:25:55,839 INFO L413 NwaCegarLoop]: 1944 mSDtfsCounter, 1685 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:25:55,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 3455 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 00:25:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2022-11-22 00:25:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2380. [2022-11-22 00:25:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 1381 states have (on average 1.2932657494569153) internal successors, (1786), 1448 states have internal predecessors, (1786), 828 states have call successors, (828), 169 states have call predecessors, (828), 168 states have return successors, (824), 814 states have call predecessors, (824), 824 states have call successors, (824) [2022-11-22 00:25:56,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3438 transitions. [2022-11-22 00:25:56,183 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3438 transitions. Word has length 111 [2022-11-22 00:25:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:25:56,184 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 3438 transitions. [2022-11-22 00:25:56,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 00:25:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3438 transitions. [2022-11-22 00:25:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-22 00:25:56,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:25:56,198 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:56,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:25:56,199 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 00:25:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:25:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash -761116753, now seen corresponding path program 1 times [2022-11-22 00:25:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:25:56,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873042817] [2022-11-22 00:25:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:25:56,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:25:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:25:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 00:25:56,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:25:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873042817] [2022-11-22 00:25:56,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873042817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:25:56,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:25:56,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:25:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421323211] [2022-11-22 00:25:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:25:56,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:25:56,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:25:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:25:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:25:56,622 INFO L87 Difference]: Start difference. First operand 2380 states and 3438 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 00:25:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:25:58,688 INFO L93 Difference]: Finished difference Result 6768 states and 9748 transitions. [2022-11-22 00:25:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:25:58,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 119 [2022-11-22 00:25:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:25:58,716 INFO L225 Difference]: With dead ends: 6768 [2022-11-22 00:25:58,717 INFO L226 Difference]: Without dead ends: 4407 [2022-11-22 00:25:58,727 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 00:25:58,728 INFO L413 NwaCegarLoop]: 1899 mSDtfsCounter, 1497 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:25:58,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 3379 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 00:25:58,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2022-11-22 00:25:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4377. [2022-11-22 00:25:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4377 states, 2542 states have (on average 1.2828481510621559) internal successors, (3261), 2670 states have internal predecessors, (3261), 1515 states have call successors, (1515), 320 states have call predecessors, (1515), 317 states have return successors, (1513), 1482 states have call predecessors, (1513), 1511 states have call successors, (1513) [2022-11-22 00:25:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4377 states to 4377 states and 6289 transitions. [2022-11-22 00:25:58,994 INFO L78 Accepts]: Start accepts. Automaton has 4377 states and 6289 transitions. Word has length 119 [2022-11-22 00:25:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:25:58,996 INFO L495 AbstractCegarLoop]: Abstraction has 4377 states and 6289 transitions. [2022-11-22 00:25:58,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 00:25:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4377 states and 6289 transitions. [2022-11-22 00:25:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-22 00:25:59,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:25:59,006 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:25:59,006 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 00:25:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:25:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1064847864, now seen corresponding path program 1 times [2022-11-22 00:25:59,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:25:59,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794361999] [2022-11-22 00:25:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:25:59,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:25:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:25:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-22 00:25:59,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:25:59,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794361999] [2022-11-22 00:25:59,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794361999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:25:59,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:25:59,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:25:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072268403] [2022-11-22 00:25:59,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:25:59,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:25:59,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:25:59,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:25:59,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:25:59,388 INFO L87 Difference]: Start difference. First operand 4377 states and 6289 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 00:26:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:02,101 INFO L93 Difference]: Finished difference Result 12709 states and 18245 transitions. [2022-11-22 00:26:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:26:02,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2022-11-22 00:26:02,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:02,158 INFO L225 Difference]: With dead ends: 12709 [2022-11-22 00:26:02,158 INFO L226 Difference]: Without dead ends: 8351 [2022-11-22 00:26:02,180 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 00:26:02,184 INFO L413 NwaCegarLoop]: 2036 mSDtfsCounter, 1644 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:02,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 3514 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 00:26:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8351 states. [2022-11-22 00:26:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8351 to 8317. [2022-11-22 00:26:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8317 states, 4848 states have (on average 1.2807343234323432) internal successors, (6209), 5092 states have internal predecessors, (6209), 2855 states have call successors, (2855), 622 states have call predecessors, (2855), 611 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2022-11-22 00:26:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 11929 transitions. [2022-11-22 00:26:02,777 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 11929 transitions. Word has length 123 [2022-11-22 00:26:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:02,780 INFO L495 AbstractCegarLoop]: Abstraction has 8317 states and 11929 transitions. [2022-11-22 00:26:02,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 00:26:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 11929 transitions. [2022-11-22 00:26:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-22 00:26:02,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:02,786 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:26:02,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:02,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash 745578719, now seen corresponding path program 1 times [2022-11-22 00:26:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:02,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286228674] [2022-11-22 00:26:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:02,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-22 00:26:03,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:03,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286228674] [2022-11-22 00:26:03,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286228674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:03,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:03,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338719573] [2022-11-22 00:26:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:03,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:03,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:03,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:03,418 INFO L87 Difference]: Start difference. First operand 8317 states and 11929 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 00:26:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:05,740 INFO L93 Difference]: Finished difference Result 8323 states and 11934 transitions. [2022-11-22 00:26:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:05,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2022-11-22 00:26:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:05,799 INFO L225 Difference]: With dead ends: 8323 [2022-11-22 00:26:05,799 INFO L226 Difference]: Without dead ends: 8321 [2022-11-22 00:26:05,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:05,812 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 1731 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 4558 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:05,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 4558 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 00:26:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8321 states. [2022-11-22 00:26:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8321 to 8321. [2022-11-22 00:26:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8321 states, 4851 states have (on average 1.2805607091321376) internal successors, (6212), 5095 states have internal predecessors, (6212), 2855 states have call successors, (2855), 623 states have call predecessors, (2855), 612 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2022-11-22 00:26:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8321 states to 8321 states and 11932 transitions. [2022-11-22 00:26:06,415 INFO L78 Accepts]: Start accepts. Automaton has 8321 states and 11932 transitions. Word has length 153 [2022-11-22 00:26:06,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:06,416 INFO L495 AbstractCegarLoop]: Abstraction has 8321 states and 11932 transitions. [2022-11-22 00:26:06,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 00:26:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8321 states and 11932 transitions. [2022-11-22 00:26:06,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-22 00:26:06,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:06,421 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:06,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:26:06,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1222224118, now seen corresponding path program 1 times [2022-11-22 00:26:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:06,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355888127] [2022-11-22 00:26:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:06,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-22 00:26:06,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:06,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355888127] [2022-11-22 00:26:06,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355888127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:06,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:06,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:06,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404897881] [2022-11-22 00:26:06,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:06,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:06,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:06,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:06,947 INFO L87 Difference]: Start difference. First operand 8321 states and 11932 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 00:26:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:09,217 INFO L93 Difference]: Finished difference Result 8327 states and 11937 transitions. [2022-11-22 00:26:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 158 [2022-11-22 00:26:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:09,263 INFO L225 Difference]: With dead ends: 8327 [2022-11-22 00:26:09,264 INFO L226 Difference]: Without dead ends: 8325 [2022-11-22 00:26:09,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:09,270 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1726 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:09,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 00:26:09,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8325 states. [2022-11-22 00:26:09,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8325 to 8325. [2022-11-22 00:26:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8325 states, 4854 states have (on average 1.2803873094355172) internal successors, (6215), 5098 states have internal predecessors, (6215), 2855 states have call successors, (2855), 624 states have call predecessors, (2855), 613 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2022-11-22 00:26:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8325 states to 8325 states and 11935 transitions. [2022-11-22 00:26:09,886 INFO L78 Accepts]: Start accepts. Automaton has 8325 states and 11935 transitions. Word has length 158 [2022-11-22 00:26:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:09,887 INFO L495 AbstractCegarLoop]: Abstraction has 8325 states and 11935 transitions. [2022-11-22 00:26:09,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 00:26:09,887 INFO L276 IsEmpty]: Start isEmpty. Operand 8325 states and 11935 transitions. [2022-11-22 00:26:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-22 00:26:09,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:09,893 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 3, 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] [2022-11-22 00:26:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:26:09,893 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 00:26:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1914951584, now seen corresponding path program 1 times [2022-11-22 00:26:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:09,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819726509] [2022-11-22 00:26:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-22 00:26:10,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:10,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819726509] [2022-11-22 00:26:10,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819726509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:10,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:10,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:10,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026272703] [2022-11-22 00:26:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:10,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:10,401 INFO L87 Difference]: Start difference. First operand 8325 states and 11935 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:26:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:12,529 INFO L93 Difference]: Finished difference Result 8331 states and 11940 transitions. [2022-11-22 00:26:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:12,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 166 [2022-11-22 00:26:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:12,566 INFO L225 Difference]: With dead ends: 8331 [2022-11-22 00:26:12,566 INFO L226 Difference]: Without dead ends: 8329 [2022-11-22 00:26:12,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:12,571 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1725 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:12,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8329 states. [2022-11-22 00:26:13,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8329 to 8329. [2022-11-22 00:26:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8329 states, 4857 states have (on average 1.280214123944822) internal successors, (6218), 5101 states have internal predecessors, (6218), 2855 states have call successors, (2855), 625 states have call predecessors, (2855), 614 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2022-11-22 00:26:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 11938 transitions. [2022-11-22 00:26:13,265 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 11938 transitions. Word has length 166 [2022-11-22 00:26:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:13,266 INFO L495 AbstractCegarLoop]: Abstraction has 8329 states and 11938 transitions. [2022-11-22 00:26:13,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:26:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 11938 transitions. [2022-11-22 00:26:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-22 00:26:13,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:13,273 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:13,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:26:13,273 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 00:26:13,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1488330326, now seen corresponding path program 1 times [2022-11-22 00:26:13,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:13,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210986001] [2022-11-22 00:26:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:13,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-11-22 00:26:13,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:13,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210986001] [2022-11-22 00:26:13,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210986001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:13,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:13,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38378854] [2022-11-22 00:26:13,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:13,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:13,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:13,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:13,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:13,793 INFO L87 Difference]: Start difference. First operand 8329 states and 11938 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 00:26:16,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:16,247 INFO L93 Difference]: Finished difference Result 8335 states and 11943 transitions. [2022-11-22 00:26:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:16,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 168 [2022-11-22 00:26:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:16,283 INFO L225 Difference]: With dead ends: 8335 [2022-11-22 00:26:16,283 INFO L226 Difference]: Without dead ends: 8333 [2022-11-22 00:26:16,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:16,291 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1726 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:16,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 00:26:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8333 states. [2022-11-22 00:26:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8333 to 8333. [2022-11-22 00:26:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8333 states, 4860 states have (on average 1.2800411522633746) internal successors, (6221), 5104 states have internal predecessors, (6221), 2855 states have call successors, (2855), 626 states have call predecessors, (2855), 615 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2022-11-22 00:26:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8333 states to 8333 states and 11941 transitions. [2022-11-22 00:26:16,971 INFO L78 Accepts]: Start accepts. Automaton has 8333 states and 11941 transitions. Word has length 168 [2022-11-22 00:26:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:16,972 INFO L495 AbstractCegarLoop]: Abstraction has 8333 states and 11941 transitions. [2022-11-22 00:26:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 00:26:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 8333 states and 11941 transitions. [2022-11-22 00:26:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-22 00:26:16,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:16,979 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-22 00:26:16,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:26:16,979 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 00:26:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:16,980 INFO L85 PathProgramCache]: Analyzing trace with hash 200690139, now seen corresponding path program 1 times [2022-11-22 00:26:16,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:16,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471777222] [2022-11-22 00:26:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:16,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-22 00:26:17,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:17,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471777222] [2022-11-22 00:26:17,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471777222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:17,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:17,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:17,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402350020] [2022-11-22 00:26:17,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:17,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:17,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:17,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:17,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:17,442 INFO L87 Difference]: Start difference. First operand 8333 states and 11941 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:26:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:19,596 INFO L93 Difference]: Finished difference Result 8339 states and 11946 transitions. [2022-11-22 00:26:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:19,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 177 [2022-11-22 00:26:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:19,631 INFO L225 Difference]: With dead ends: 8339 [2022-11-22 00:26:19,631 INFO L226 Difference]: Without dead ends: 8337 [2022-11-22 00:26:19,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:19,637 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1725 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:19,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2022-11-22 00:26:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 8337. [2022-11-22 00:26:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8337 states, 4863 states have (on average 1.279868393995476) internal successors, (6224), 5107 states have internal predecessors, (6224), 2855 states have call successors, (2855), 627 states have call predecessors, (2855), 616 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2022-11-22 00:26:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 11944 transitions. [2022-11-22 00:26:20,424 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 11944 transitions. Word has length 177 [2022-11-22 00:26:20,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:20,425 INFO L495 AbstractCegarLoop]: Abstraction has 8337 states and 11944 transitions. [2022-11-22 00:26:20,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:26:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 11944 transitions. [2022-11-22 00:26:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-22 00:26:20,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:20,434 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:20,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:26:20,434 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 00:26:20,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1015477322, now seen corresponding path program 1 times [2022-11-22 00:26:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:20,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856867965] [2022-11-22 00:26:20,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:20,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-11-22 00:26:20,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:20,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856867965] [2022-11-22 00:26:20,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856867965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:20,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:20,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:20,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448729651] [2022-11-22 00:26:20,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:20,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:20,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:20,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:20,993 INFO L87 Difference]: Start difference. First operand 8337 states and 11944 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:26:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:23,118 INFO L93 Difference]: Finished difference Result 8343 states and 11949 transitions. [2022-11-22 00:26:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:23,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 178 [2022-11-22 00:26:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:23,156 INFO L225 Difference]: With dead ends: 8343 [2022-11-22 00:26:23,156 INFO L226 Difference]: Without dead ends: 8341 [2022-11-22 00:26:23,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:23,164 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1726 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:23,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2022-11-22 00:26:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 8341. [2022-11-22 00:26:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 4866 states have (on average 1.2796958487464036) internal successors, (6227), 5110 states have internal predecessors, (6227), 2855 states have call successors, (2855), 628 states have call predecessors, (2855), 617 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2022-11-22 00:26:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 11947 transitions. [2022-11-22 00:26:23,912 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 11947 transitions. Word has length 178 [2022-11-22 00:26:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:23,913 INFO L495 AbstractCegarLoop]: Abstraction has 8341 states and 11947 transitions. [2022-11-22 00:26:23,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:26:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 11947 transitions. [2022-11-22 00:26:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-22 00:26:23,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:23,921 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:23,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:26:23,922 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 00:26:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash 817295712, now seen corresponding path program 1 times [2022-11-22 00:26:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:23,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089747128] [2022-11-22 00:26:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:23,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-22 00:26:24,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089747128] [2022-11-22 00:26:24,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089747128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:24,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:24,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081723556] [2022-11-22 00:26:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:24,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:24,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:24,392 INFO L87 Difference]: Start difference. First operand 8341 states and 11947 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 00:26:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:26,602 INFO L93 Difference]: Finished difference Result 8533 states and 12149 transitions. [2022-11-22 00:26:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:26,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 186 [2022-11-22 00:26:26,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:26,637 INFO L225 Difference]: With dead ends: 8533 [2022-11-22 00:26:26,638 INFO L226 Difference]: Without dead ends: 8531 [2022-11-22 00:26:26,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:26,644 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1692 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:26,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 4657 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 00:26:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8531 states. [2022-11-22 00:26:27,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8531 to 8529. [2022-11-22 00:26:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8529 states, 4967 states have (on average 1.2760217435071473) internal successors, (6338), 5219 states have internal predecessors, (6338), 2899 states have call successors, (2899), 671 states have call predecessors, (2899), 660 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2022-11-22 00:26:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8529 states to 8529 states and 12146 transitions. [2022-11-22 00:26:27,364 INFO L78 Accepts]: Start accepts. Automaton has 8529 states and 12146 transitions. Word has length 186 [2022-11-22 00:26:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:27,364 INFO L495 AbstractCegarLoop]: Abstraction has 8529 states and 12146 transitions. [2022-11-22 00:26:27,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 00:26:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8529 states and 12146 transitions. [2022-11-22 00:26:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-22 00:26:27,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:27,373 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:27,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:26:27,373 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:27,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash -714313450, now seen corresponding path program 1 times [2022-11-22 00:26:27,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:27,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195182868] [2022-11-22 00:26:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:27,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2022-11-22 00:26:27,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195182868] [2022-11-22 00:26:27,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195182868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:27,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:27,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326276690] [2022-11-22 00:26:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:27,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:27,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:27,809 INFO L87 Difference]: Start difference. First operand 8529 states and 12146 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 00:26:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:30,202 INFO L93 Difference]: Finished difference Result 8535 states and 12151 transitions. [2022-11-22 00:26:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:30,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 188 [2022-11-22 00:26:30,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:30,243 INFO L225 Difference]: With dead ends: 8535 [2022-11-22 00:26:30,243 INFO L226 Difference]: Without dead ends: 8533 [2022-11-22 00:26:30,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:30,250 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1726 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:30,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2022-11-22 00:26:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 8533. [2022-11-22 00:26:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8533 states, 4970 states have (on average 1.2758551307847084) internal successors, (6341), 5222 states have internal predecessors, (6341), 2899 states have call successors, (2899), 672 states have call predecessors, (2899), 661 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2022-11-22 00:26:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 12149 transitions. [2022-11-22 00:26:30,931 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 12149 transitions. Word has length 188 [2022-11-22 00:26:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:30,932 INFO L495 AbstractCegarLoop]: Abstraction has 8533 states and 12149 transitions. [2022-11-22 00:26:30,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 00:26:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 12149 transitions. [2022-11-22 00:26:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-22 00:26:30,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:30,942 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 9, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:30,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:26:30,943 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 00:26:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:30,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1734060005, now seen corresponding path program 1 times [2022-11-22 00:26:30,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:30,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981236204] [2022-11-22 00:26:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:30,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-22 00:26:31,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:31,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981236204] [2022-11-22 00:26:31,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981236204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:31,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:31,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:31,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519409424] [2022-11-22 00:26:31,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:31,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:31,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:31,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:31,427 INFO L87 Difference]: Start difference. First operand 8533 states and 12149 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 00:26:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:33,704 INFO L93 Difference]: Finished difference Result 8577 states and 12175 transitions. [2022-11-22 00:26:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:33,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 197 [2022-11-22 00:26:33,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:33,737 INFO L225 Difference]: With dead ends: 8577 [2022-11-22 00:26:33,737 INFO L226 Difference]: Without dead ends: 8575 [2022-11-22 00:26:33,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:33,745 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1701 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:33,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 4599 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8575 states. [2022-11-22 00:26:34,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8575 to 8573. [2022-11-22 00:26:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8573 states, 4993 states have (on average 1.2745844181854595) internal successors, (6364), 5245 states have internal predecessors, (6364), 2899 states have call successors, (2899), 689 states have call predecessors, (2899), 678 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2022-11-22 00:26:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 12172 transitions. [2022-11-22 00:26:34,644 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 12172 transitions. Word has length 197 [2022-11-22 00:26:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:34,645 INFO L495 AbstractCegarLoop]: Abstraction has 8573 states and 12172 transitions. [2022-11-22 00:26:34,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 00:26:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 12172 transitions. [2022-11-22 00:26:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-22 00:26:34,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:34,655 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:34,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:26:34,655 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash -209053131, now seen corresponding path program 1 times [2022-11-22 00:26:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:34,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166191824] [2022-11-22 00:26:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:34,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-22 00:26:35,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:35,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166191824] [2022-11-22 00:26:35,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166191824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:35,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:35,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784514269] [2022-11-22 00:26:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:35,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:35,156 INFO L87 Difference]: Start difference. First operand 8573 states and 12172 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 00:26:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:37,427 INFO L93 Difference]: Finished difference Result 8579 states and 12177 transitions. [2022-11-22 00:26:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 201 [2022-11-22 00:26:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:37,450 INFO L225 Difference]: With dead ends: 8579 [2022-11-22 00:26:37,450 INFO L226 Difference]: Without dead ends: 8577 [2022-11-22 00:26:37,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:37,454 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1725 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:37,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8577 states. [2022-11-22 00:26:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8577 to 8577. [2022-11-22 00:26:38,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8577 states, 4996 states have (on average 1.2744195356285029) internal successors, (6367), 5248 states have internal predecessors, (6367), 2899 states have call successors, (2899), 690 states have call predecessors, (2899), 679 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2022-11-22 00:26:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8577 states to 8577 states and 12175 transitions. [2022-11-22 00:26:38,343 INFO L78 Accepts]: Start accepts. Automaton has 8577 states and 12175 transitions. Word has length 201 [2022-11-22 00:26:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:38,344 INFO L495 AbstractCegarLoop]: Abstraction has 8577 states and 12175 transitions. [2022-11-22 00:26:38,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 00:26:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 8577 states and 12175 transitions. [2022-11-22 00:26:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-22 00:26:38,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:38,357 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:38,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:26:38,358 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:38,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1204669243, now seen corresponding path program 1 times [2022-11-22 00:26:38,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:38,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584057068] [2022-11-22 00:26:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:38,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-22 00:26:38,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:38,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584057068] [2022-11-22 00:26:38,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584057068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:38,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:38,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373926378] [2022-11-22 00:26:38,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:38,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:38,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:38,930 INFO L87 Difference]: Start difference. First operand 8577 states and 12175 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 00:26:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:41,187 INFO L93 Difference]: Finished difference Result 8583 states and 12180 transitions. [2022-11-22 00:26:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 207 [2022-11-22 00:26:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:41,220 INFO L225 Difference]: With dead ends: 8583 [2022-11-22 00:26:41,220 INFO L226 Difference]: Without dead ends: 8581 [2022-11-22 00:26:41,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:41,227 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1725 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:41,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:41,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8581 states. [2022-11-22 00:26:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8581 to 8581. [2022-11-22 00:26:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8581 states, 4999 states have (on average 1.274254850970194) internal successors, (6370), 5251 states have internal predecessors, (6370), 2899 states have call successors, (2899), 691 states have call predecessors, (2899), 680 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2022-11-22 00:26:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8581 states to 8581 states and 12178 transitions. [2022-11-22 00:26:41,904 INFO L78 Accepts]: Start accepts. Automaton has 8581 states and 12178 transitions. Word has length 207 [2022-11-22 00:26:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:41,905 INFO L495 AbstractCegarLoop]: Abstraction has 8581 states and 12178 transitions. [2022-11-22 00:26:41,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 00:26:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8581 states and 12178 transitions. [2022-11-22 00:26:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-22 00:26:41,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:41,915 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:41,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:26:41,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash 51194278, now seen corresponding path program 1 times [2022-11-22 00:26:41,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:41,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239652128] [2022-11-22 00:26:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:41,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-22 00:26:42,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:42,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239652128] [2022-11-22 00:26:42,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239652128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:42,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:42,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:26:42,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716894609] [2022-11-22 00:26:42,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:42,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:26:42,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:42,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:26:42,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:26:42,232 INFO L87 Difference]: Start difference. First operand 8581 states and 12178 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-22 00:26:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:44,250 INFO L93 Difference]: Finished difference Result 15170 states and 21428 transitions. [2022-11-22 00:26:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:26:44,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 204 [2022-11-22 00:26:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:44,268 INFO L225 Difference]: With dead ends: 15170 [2022-11-22 00:26:44,268 INFO L226 Difference]: Without dead ends: 6608 [2022-11-22 00:26:44,297 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 00:26:44,298 INFO L413 NwaCegarLoop]: 2187 mSDtfsCounter, 1033 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:44,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 3678 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 00:26:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6608 states. [2022-11-22 00:26:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6608 to 6532. [2022-11-22 00:26:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 3868 states have (on average 1.2719751809720785) internal successors, (4920), 4058 states have internal predecessors, (4920), 2103 states have call successors, (2103), 568 states have call predecessors, (2103), 558 states have return successors, (2106), 2034 states have call predecessors, (2106), 2099 states have call successors, (2106) [2022-11-22 00:26:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 9129 transitions. [2022-11-22 00:26:44,868 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 9129 transitions. Word has length 204 [2022-11-22 00:26:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:44,868 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 9129 transitions. [2022-11-22 00:26:44,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-22 00:26:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 9129 transitions. [2022-11-22 00:26:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-22 00:26:44,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:44,873 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:44,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:26:44,874 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2007233323, now seen corresponding path program 1 times [2022-11-22 00:26:44,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:44,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637408751] [2022-11-22 00:26:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:44,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2022-11-22 00:26:45,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:45,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637408751] [2022-11-22 00:26:45,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637408751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:45,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:45,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:45,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433161165] [2022-11-22 00:26:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:45,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:45,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:45,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:45,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:45,297 INFO L87 Difference]: Start difference. First operand 6532 states and 9129 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 00:26:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:47,255 INFO L93 Difference]: Finished difference Result 6538 states and 9134 transitions. [2022-11-22 00:26:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:47,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 211 [2022-11-22 00:26:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:47,275 INFO L225 Difference]: With dead ends: 6538 [2022-11-22 00:26:47,275 INFO L226 Difference]: Without dead ends: 6534 [2022-11-22 00:26:47,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:47,278 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1725 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:47,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 4561 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 00:26:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2022-11-22 00:26:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 6534. [2022-11-22 00:26:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6534 states, 3870 states have (on average 1.271576227390181) internal successors, (4921), 4059 states have internal predecessors, (4921), 2103 states have call successors, (2103), 569 states have call predecessors, (2103), 558 states have return successors, (2106), 2034 states have call predecessors, (2106), 2099 states have call successors, (2106) [2022-11-22 00:26:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 9130 transitions. [2022-11-22 00:26:47,900 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 9130 transitions. Word has length 211 [2022-11-22 00:26:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:47,901 INFO L495 AbstractCegarLoop]: Abstraction has 6534 states and 9130 transitions. [2022-11-22 00:26:47,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 00:26:47,901 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 9130 transitions. [2022-11-22 00:26:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-22 00:26:47,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:47,906 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:47,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 00:26:47,906 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1393264219, now seen corresponding path program 1 times [2022-11-22 00:26:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:47,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333088118] [2022-11-22 00:26:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-11-22 00:26:48,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:48,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333088118] [2022-11-22 00:26:48,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333088118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:48,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:48,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:48,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590320878] [2022-11-22 00:26:48,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:48,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:48,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:48,380 INFO L87 Difference]: Start difference. First operand 6534 states and 9130 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 00:26:50,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:50,814 INFO L93 Difference]: Finished difference Result 6534 states and 9130 transitions. [2022-11-22 00:26:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:50,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 217 [2022-11-22 00:26:50,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:50,831 INFO L225 Difference]: With dead ends: 6534 [2022-11-22 00:26:50,831 INFO L226 Difference]: Without dead ends: 6402 [2022-11-22 00:26:50,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:50,835 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 1721 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 4558 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:50,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 4558 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 00:26:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2022-11-22 00:26:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6402. [2022-11-22 00:26:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6402 states, 3819 states have (on average 1.26891856506939) internal successors, (4846), 3984 states have internal predecessors, (4846), 2039 states have call successors, (2039), 547 states have call predecessors, (2039), 542 states have return successors, (2046), 1999 states have call predecessors, (2046), 2039 states have call successors, (2046) [2022-11-22 00:26:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6402 states to 6402 states and 8931 transitions. [2022-11-22 00:26:51,414 INFO L78 Accepts]: Start accepts. Automaton has 6402 states and 8931 transitions. Word has length 217 [2022-11-22 00:26:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:51,414 INFO L495 AbstractCegarLoop]: Abstraction has 6402 states and 8931 transitions. [2022-11-22 00:26:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 00:26:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 6402 states and 8931 transitions. [2022-11-22 00:26:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-22 00:26:51,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:51,422 INFO L195 NwaCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:26:51,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 00:26:51,422 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:51,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1341698829, now seen corresponding path program 1 times [2022-11-22 00:26:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:51,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582324714] [2022-11-22 00:26:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-22 00:26:51,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:51,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582324714] [2022-11-22 00:26:51,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582324714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:51,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:51,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:26:51,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535044559] [2022-11-22 00:26:51,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:51,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:26:51,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:51,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:26:51,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:26:51,734 INFO L87 Difference]: Start difference. First operand 6402 states and 8931 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 00:26:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:54,292 INFO L93 Difference]: Finished difference Result 14646 states and 20414 transitions. [2022-11-22 00:26:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:26:54,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 251 [2022-11-22 00:26:54,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:54,325 INFO L225 Difference]: With dead ends: 14646 [2022-11-22 00:26:54,325 INFO L226 Difference]: Without dead ends: 8384 [2022-11-22 00:26:54,343 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 00:26:54,344 INFO L413 NwaCegarLoop]: 2283 mSDtfsCounter, 992 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:54,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 3722 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2022-11-22 00:26:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8376. [2022-11-22 00:26:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8376 states, 5028 states have (on average 1.2675019888623706) internal successors, (6373), 5237 states have internal predecessors, (6373), 2609 states have call successors, (2609), 742 states have call predecessors, (2609), 737 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2022-11-22 00:26:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8376 states to 8376 states and 11598 transitions. [2022-11-22 00:26:55,192 INFO L78 Accepts]: Start accepts. Automaton has 8376 states and 11598 transitions. Word has length 251 [2022-11-22 00:26:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:55,193 INFO L495 AbstractCegarLoop]: Abstraction has 8376 states and 11598 transitions. [2022-11-22 00:26:55,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 00:26:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8376 states and 11598 transitions. [2022-11-22 00:26:55,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-22 00:26:55,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:55,201 INFO L195 NwaCegarLoop]: trace histogram [17, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:55,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 00:26:55,201 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 00:26:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2052663232, now seen corresponding path program 1 times [2022-11-22 00:26:55,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:55,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030199740] [2022-11-22 00:26:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:55,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2022-11-22 00:26:56,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030199740] [2022-11-22 00:26:56,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030199740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:56,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:56,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034085244] [2022-11-22 00:26:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:56,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:56,011 INFO L87 Difference]: Start difference. First operand 8376 states and 11598 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-22 00:26:58,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:58,456 INFO L93 Difference]: Finished difference Result 8392 states and 11612 transitions. [2022-11-22 00:26:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:58,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 313 [2022-11-22 00:26:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:58,484 INFO L225 Difference]: With dead ends: 8392 [2022-11-22 00:26:58,484 INFO L226 Difference]: Without dead ends: 8390 [2022-11-22 00:26:58,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:58,491 INFO L413 NwaCegarLoop]: 1481 mSDtfsCounter, 1616 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 4463 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:58,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 4463 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:26:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2022-11-22 00:26:59,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 8388. [2022-11-22 00:26:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8388 states, 5037 states have (on average 1.266428429620806) internal successors, (6379), 5246 states have internal predecessors, (6379), 2609 states have call successors, (2609), 745 states have call predecessors, (2609), 740 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2022-11-22 00:26:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8388 states to 8388 states and 11604 transitions. [2022-11-22 00:26:59,161 INFO L78 Accepts]: Start accepts. Automaton has 8388 states and 11604 transitions. Word has length 313 [2022-11-22 00:26:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:59,162 INFO L495 AbstractCegarLoop]: Abstraction has 8388 states and 11604 transitions. [2022-11-22 00:26:59,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-22 00:26:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8388 states and 11604 transitions. [2022-11-22 00:26:59,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-22 00:26:59,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:59,171 INFO L195 NwaCegarLoop]: trace histogram [17, 11, 11, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:59,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 00:26:59,171 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:26:59,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:59,172 INFO L85 PathProgramCache]: Analyzing trace with hash 832926644, now seen corresponding path program 1 times [2022-11-22 00:26:59,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:59,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826499687] [2022-11-22 00:26:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:59,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2022-11-22 00:26:59,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:59,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826499687] [2022-11-22 00:26:59,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826499687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:59,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:59,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759142790] [2022-11-22 00:26:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:59,953 INFO L87 Difference]: Start difference. First operand 8388 states and 11604 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-22 00:27:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:02,435 INFO L93 Difference]: Finished difference Result 8390 states and 11605 transitions. [2022-11-22 00:27:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:27:02,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 334 [2022-11-22 00:27:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:02,464 INFO L225 Difference]: With dead ends: 8390 [2022-11-22 00:27:02,464 INFO L226 Difference]: Without dead ends: 8388 [2022-11-22 00:27:02,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:27:02,470 INFO L413 NwaCegarLoop]: 1477 mSDtfsCounter, 26 mSDsluCounter, 4413 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:02,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 5890 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 00:27:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8388 states. [2022-11-22 00:27:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8388 to 8388. [2022-11-22 00:27:03,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8388 states, 5037 states have (on average 1.265237244391503) internal successors, (6373), 5246 states have internal predecessors, (6373), 2609 states have call successors, (2609), 745 states have call predecessors, (2609), 740 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2022-11-22 00:27:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8388 states to 8388 states and 11598 transitions. [2022-11-22 00:27:03,109 INFO L78 Accepts]: Start accepts. Automaton has 8388 states and 11598 transitions. Word has length 334 [2022-11-22 00:27:03,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:03,110 INFO L495 AbstractCegarLoop]: Abstraction has 8388 states and 11598 transitions. [2022-11-22 00:27:03,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-22 00:27:03,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8388 states and 11598 transitions. [2022-11-22 00:27:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-22 00:27:03,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:03,127 INFO L195 NwaCegarLoop]: trace histogram [23, 17, 17, 11, 11, 11, 11, 11, 11, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:03,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 00:27:03,128 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:27:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash 383351376, now seen corresponding path program 1 times [2022-11-22 00:27:03,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:03,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039635066] [2022-11-22 00:27:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:03,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1333 trivial. 0 not checked. [2022-11-22 00:27:03,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:03,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039635066] [2022-11-22 00:27:03,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039635066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:03,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:03,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:27:03,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611200866] [2022-11-22 00:27:03,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:03,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:03,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:03,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:03,726 INFO L87 Difference]: Start difference. First operand 8388 states and 11598 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-22 00:27:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:05,939 INFO L93 Difference]: Finished difference Result 16648 states and 23035 transitions. [2022-11-22 00:27:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:05,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 474 [2022-11-22 00:27:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:05,964 INFO L225 Difference]: With dead ends: 16648 [2022-11-22 00:27:05,964 INFO L226 Difference]: Without dead ends: 8400 [2022-11-22 00:27:05,983 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 00:27:05,984 INFO L413 NwaCegarLoop]: 1478 mSDtfsCounter, 1 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:05,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2947 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 00:27:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2022-11-22 00:27:06,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 8392. [2022-11-22 00:27:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8392 states, 5041 states have (on average 1.265026780400714) internal successors, (6377), 5250 states have internal predecessors, (6377), 2609 states have call successors, (2609), 745 states have call predecessors, (2609), 740 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2022-11-22 00:27:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8392 states to 8392 states and 11602 transitions. [2022-11-22 00:27:06,786 INFO L78 Accepts]: Start accepts. Automaton has 8392 states and 11602 transitions. Word has length 474 [2022-11-22 00:27:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:06,787 INFO L495 AbstractCegarLoop]: Abstraction has 8392 states and 11602 transitions. [2022-11-22 00:27:06,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-22 00:27:06,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8392 states and 11602 transitions. [2022-11-22 00:27:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-22 00:27:06,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:06,804 INFO L195 NwaCegarLoop]: trace histogram [23, 17, 17, 11, 11, 11, 11, 11, 11, 6, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 00:27:06,805 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:27:06,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2040116044, now seen corresponding path program 1 times [2022-11-22 00:27:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:06,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025809444] [2022-11-22 00:27:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:06,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2022-11-22 00:27:07,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:07,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025809444] [2022-11-22 00:27:07,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025809444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:27:07,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888185711] [2022-11-22 00:27:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:07,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:27:07,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:27:07,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:27:07,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:27:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:09,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 5196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:27:09,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:27:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2022-11-22 00:27:09,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:27:09,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888185711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:09,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:27:09,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 00:27:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718027708] [2022-11-22 00:27:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:09,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:09,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:09,331 INFO L87 Difference]: Start difference. First operand 8392 states and 11602 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2022-11-22 00:27:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:11,273 INFO L93 Difference]: Finished difference Result 16760 states and 23215 transitions. [2022-11-22 00:27:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 479 [2022-11-22 00:27:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:11,300 INFO L225 Difference]: With dead ends: 16760 [2022-11-22 00:27:11,300 INFO L226 Difference]: Without dead ends: 8508 [2022-11-22 00:27:11,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:11,324 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 17 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:11,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2954 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 00:27:11,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2022-11-22 00:27:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8400. [2022-11-22 00:27:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8400 states, 5049 states have (on average 1.264606852842147) internal successors, (6385), 5258 states have internal predecessors, (6385), 2609 states have call successors, (2609), 745 states have call predecessors, (2609), 740 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2022-11-22 00:27:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8400 states to 8400 states and 11610 transitions. [2022-11-22 00:27:12,022 INFO L78 Accepts]: Start accepts. Automaton has 8400 states and 11610 transitions. Word has length 479 [2022-11-22 00:27:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:12,022 INFO L495 AbstractCegarLoop]: Abstraction has 8400 states and 11610 transitions. [2022-11-22 00:27:12,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2022-11-22 00:27:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 8400 states and 11610 transitions. [2022-11-22 00:27:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-22 00:27:12,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:12,035 INFO L195 NwaCegarLoop]: trace histogram [23, 17, 17, 11, 11, 11, 11, 11, 11, 6, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:12,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:27:12,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-22 00:27:12,247 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 00:27:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1364100612, now seen corresponding path program 1 times [2022-11-22 00:27:12,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:12,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143375635] [2022-11-22 00:27:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2022-11-22 00:27:12,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:12,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143375635] [2022-11-22 00:27:12,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143375635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:27:12,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541537329] [2022-11-22 00:27:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:12,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:27:12,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:27:12,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:27:12,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:27:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:14,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 5227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:27:14,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:27:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 1205 trivial. 0 not checked. [2022-11-22 00:27:14,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:27:14,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541537329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:14,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:27:14,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 00:27:14,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6731521] [2022-11-22 00:27:14,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:14,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:14,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:14,646 INFO L87 Difference]: Start difference. First operand 8400 states and 11610 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2022-11-22 00:27:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:17,250 INFO L93 Difference]: Finished difference Result 20044 states and 27775 transitions. [2022-11-22 00:27:17,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:17,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 484 [2022-11-22 00:27:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:17,272 INFO L225 Difference]: With dead ends: 20044 [2022-11-22 00:27:17,272 INFO L226 Difference]: Without dead ends: 11784 [2022-11-22 00:27:17,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:17,291 INFO L413 NwaCegarLoop]: 2692 mSDtfsCounter, 1492 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:17,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 4090 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 00:27:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11784 states. [2022-11-22 00:27:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11784 to 11781. [2022-11-22 00:27:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11781 states, 7126 states have (on average 1.2587706988492844) internal successors, (8970), 7412 states have internal predecessors, (8970), 3630 states have call successors, (3630), 1031 states have call predecessors, (3630), 1023 states have return successors, (3641), 3561 states have call predecessors, (3641), 3630 states have call successors, (3641) [2022-11-22 00:27:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11781 states to 11781 states and 16241 transitions. [2022-11-22 00:27:18,342 INFO L78 Accepts]: Start accepts. Automaton has 11781 states and 16241 transitions. Word has length 484 [2022-11-22 00:27:18,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:18,342 INFO L495 AbstractCegarLoop]: Abstraction has 11781 states and 16241 transitions. [2022-11-22 00:27:18,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2022-11-22 00:27:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 11781 states and 16241 transitions. [2022-11-22 00:27:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-11-22 00:27:18,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:18,355 INFO L195 NwaCegarLoop]: trace histogram [25, 17, 17, 11, 11, 11, 11, 11, 11, 6, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:18,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:27:18,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:27:18,555 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 00:27:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash 976392182, now seen corresponding path program 1 times [2022-11-22 00:27:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:18,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499680974] [2022-11-22 00:27:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-11-22 00:27:19,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:19,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499680974] [2022-11-22 00:27:19,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499680974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:27:19,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898803018] [2022-11-22 00:27:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:19,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:27:19,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:27:19,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:27:19,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:27:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:20,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 5288 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:27:20,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:27:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2022-11-22 00:27:21,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:27:21,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898803018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:21,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:27:21,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 00:27:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391492538] [2022-11-22 00:27:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:21,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:21,010 INFO L87 Difference]: Start difference. First operand 11781 states and 16241 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2022-11-22 00:27:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:23,918 INFO L93 Difference]: Finished difference Result 27480 states and 37849 transitions. [2022-11-22 00:27:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) Word has length 504 [2022-11-22 00:27:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:23,960 INFO L225 Difference]: With dead ends: 27480 [2022-11-22 00:27:23,960 INFO L226 Difference]: Without dead ends: 15839 [2022-11-22 00:27:24,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:24,114 INFO L413 NwaCegarLoop]: 1816 mSDtfsCounter, 1640 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:24,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 3111 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 00:27:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15839 states. [2022-11-22 00:27:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15839 to 15836. [2022-11-22 00:27:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15836 states, 9631 states have (on average 1.25957844460596) internal successors, (12131), 10010 states have internal predecessors, (12131), 4811 states have call successors, (4811), 1403 states have call predecessors, (4811), 1392 states have return successors, (4826), 4717 states have call predecessors, (4826), 4811 states have call successors, (4826) [2022-11-22 00:27:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15836 states to 15836 states and 21768 transitions. [2022-11-22 00:27:25,513 INFO L78 Accepts]: Start accepts. Automaton has 15836 states and 21768 transitions. Word has length 504 [2022-11-22 00:27:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:25,514 INFO L495 AbstractCegarLoop]: Abstraction has 15836 states and 21768 transitions. [2022-11-22 00:27:25,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2022-11-22 00:27:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 15836 states and 21768 transitions. [2022-11-22 00:27:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-11-22 00:27:25,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:25,526 INFO L195 NwaCegarLoop]: trace histogram [25, 17, 17, 11, 11, 11, 11, 11, 11, 6, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:25,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:27:25,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:27:25,727 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 00:27:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:25,728 INFO L85 PathProgramCache]: Analyzing trace with hash -107930832, now seen corresponding path program 1 times [2022-11-22 00:27:25,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:25,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415824024] [2022-11-22 00:27:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:25,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 1447 trivial. 0 not checked. [2022-11-22 00:27:26,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:26,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415824024] [2022-11-22 00:27:26,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415824024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:27:26,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37990973] [2022-11-22 00:27:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:26,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:27:26,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:27:26,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:27:26,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f45e05b-c562-4bad-a944-9fb9175f13aa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:27:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:28,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 5290 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:27:28,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:27:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 505 proven. 1 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-11-22 00:27:28,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:27:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 1447 trivial. 0 not checked. [2022-11-22 00:27:28,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37990973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:27:28,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1675488593] [2022-11-22 00:27:28,528 INFO L159 IcfgInterpreter]: Started Sifa with 264 locations of interest [2022-11-22 00:27:28,528 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:27:28,533 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:27:28,539 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:27:28,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs