./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-smc91c92_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/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-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:58:47,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:58:47,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:58:47,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:58:47,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:58:47,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:58:47,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:58:47,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:58:47,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:58:47,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:58:47,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:58:47,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:58:47,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:58:47,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:58:47,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:58:47,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:58:47,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:58:47,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:58:47,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:58:47,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:58:47,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:58:47,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:58:47,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:58:47,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:58:47,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:58:47,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:58:47,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:58:47,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:58:47,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:58:47,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:58:47,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:58:47,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:58:47,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:58:47,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:58:47,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:58:47,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:58:47,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:58:47,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:58:47,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:58:47,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:58:47,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:58:47,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:58:47,644 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:58:47,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:58:47,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:58:47,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:58:47,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:58:47,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:58:47,647 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:58:47,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:58:47,647 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:58:47,647 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:58:47,648 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:58:47,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:58:47,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:58:47,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:58:47,649 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:58:47,650 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:58:47,650 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:58:47,650 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:58:47,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:58:47,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:58:47,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:58:47,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:58:47,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:58:47,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:58:47,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:58:47,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:58:47,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:58:47,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:58:47,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:58:47,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:58:47,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:58:47,658 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:58:47,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:58:47,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:58:47,658 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:58:47,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:58:47,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:58:47,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:58:47,659 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2022-11-22 01:58:47,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:58:47,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:58:47,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:58:48,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:58:48,001 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:58:48,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-22 01:58:51,123 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:58:51,839 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:58:51,840 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-22 01:58:51,890 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/data/9ea243e56/5204f53c127d45cd9dbcf14f9b4d3ab0/FLAGe9e08caa7 [2022-11-22 01:58:51,913 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/data/9ea243e56/5204f53c127d45cd9dbcf14f9b4d3ab0 [2022-11-22 01:58:51,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:58:51,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:58:51,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:58:51,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:58:51,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:58:51,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:58:51" (1/1) ... [2022-11-22 01:58:51,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b49066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:51, skipping insertion in model container [2022-11-22 01:58:51,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:58:51" (1/1) ... [2022-11-22 01:58:51,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:58:52,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:58:55,072 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2022-11-22 01:58:55,079 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2022-11-22 01:58:55,086 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2022-11-22 01:58:55,087 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2022-11-22 01:58:55,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:58:55,174 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:58:55,615 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2022-11-22 01:58:55,616 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2022-11-22 01:58:55,617 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2022-11-22 01:58:55,618 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_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2022-11-22 01:58:55,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:58:55,864 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:58:55,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55 WrapperNode [2022-11-22 01:58:55,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:58:55,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:58:55,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:58:55,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:58:55,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:55,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,227 INFO L138 Inliner]: procedures = 407, calls = 2608, calls flagged for inlining = 197, calls inlined = 171, statements flattened = 5040 [2022-11-22 01:58:56,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:58:56,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:58:56,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:58:56,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:58:56,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,513 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:58:56,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:58:56,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:58:56,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:58:56,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (1/1) ... [2022-11-22 01:58:56,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:58:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:58:56,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:58:56,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:58:56,754 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-22 01:58:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-22 01:58:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2022-11-22 01:58:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2022-11-22 01:58:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-22 01:58:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-22 01:58:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:58:56,756 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:58:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2022-11-22 01:58:56,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2022-11-22 01:58:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:58:56,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:58:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2022-11-22 01:58:56,757 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2022-11-22 01:58:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2022-11-22 01:58:56,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2022-11-22 01:58:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:58:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:58:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:58:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:58:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:58:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:58:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2022-11-22 01:58:56,760 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2022-11-22 01:58:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:58:56,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:58:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:58:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2022-11-22 01:58:56,761 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2022-11-22 01:58:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:58:56,762 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:58:56,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-22 01:58:56,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-22 01:58:56,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:58:56,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:58:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:58:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 01:58:56,763 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 01:58:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 01:58:56,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 01:58:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:58:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:58:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2022-11-22 01:58:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2022-11-22 01:58:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:58:56,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:58:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:58:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:58:56,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:58:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:58:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:58:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2022-11-22 01:58:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2022-11-22 01:58:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:58:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:58:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:58:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:58:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:58:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:58:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:58:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:58:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2022-11-22 01:58:56,782 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2022-11-22 01:58:56,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:58:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:58:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2022-11-22 01:58:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2022-11-22 01:58:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-22 01:58:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-22 01:58:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 01:58:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 01:58:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:58:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:58:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:58:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:58:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2022-11-22 01:58:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2022-11-22 01:58:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:58:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:58:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 01:58:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 01:58:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_smc_private [2022-11-22 01:58:56,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_smc_private [2022-11-22 01:58:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2022-11-22 01:58:56,788 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2022-11-22 01:58:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:58:56,789 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:58:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2022-11-22 01:58:56,789 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2022-11-22 01:58:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 01:58:56,790 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 01:58:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:58:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:58:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:58:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:58:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 01:58:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 01:58:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2022-11-22 01:58:56,792 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2022-11-22 01:58:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:58:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2022-11-22 01:58:56,792 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2022-11-22 01:58:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-22 01:58:56,793 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-22 01:58:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:58:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:58:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-22 01:58:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-22 01:58:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:58:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:58:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 01:58:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 01:58:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-22 01:58:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-22 01:58:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:58:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:58:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:58:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:58:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:58:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:58:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:58:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2022-11-22 01:58:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2022-11-22 01:58:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2022-11-22 01:58:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2022-11-22 01:58:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:58:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:58:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_smc_private [2022-11-22 01:58:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_smc_private [2022-11-22 01:58:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2022-11-22 01:58:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2022-11-22 01:58:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:58:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:58:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure smc_interrupt [2022-11-22 01:58:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_interrupt [2022-11-22 01:58:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-22 01:58:56,808 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-22 01:58:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:58:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-22 01:58:56,808 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-22 01:58:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:58:56,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:58:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 01:58:56,809 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 01:58:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-22 01:58:56,809 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-22 01:58:57,615 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:58:57,618 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:58:57,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:59:03,897 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:59:04,069 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:59:05,044 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:59:05,044 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:59:05,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:05 BoogieIcfgContainer [2022-11-22 01:59:05,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:59:05,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:59:05,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:59:05,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:59:05,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:58:51" (1/3) ... [2022-11-22 01:59:05,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c07360c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:05, skipping insertion in model container [2022-11-22 01:59:05,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:55" (2/3) ... [2022-11-22 01:59:05,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c07360c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:05, skipping insertion in model container [2022-11-22 01:59:05,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:05" (3/3) ... [2022-11-22 01:59:05,059 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-22 01:59:05,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:59:05,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:59:05,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:05,240 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;@646fce83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:05,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:59:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 1226 states, 693 states have (on average 1.2972582972582973) internal successors, (899), 714 states have internal predecessors, (899), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) [2022-11-22 01:59:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-22 01:59:05,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:05,288 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:05,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1031237655, now seen corresponding path program 1 times [2022-11-22 01:59:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:05,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004400570] [2022-11-22 01:59:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-22 01:59:06,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:06,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004400570] [2022-11-22 01:59:06,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004400570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:06,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:06,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:06,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918608878] [2022-11-22 01:59:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:06,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:06,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:06,403 INFO L87 Difference]: Start difference. First operand has 1226 states, 693 states have (on average 1.2972582972582973) internal successors, (899), 714 states have internal predecessors, (899), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (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 01:59:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:09,095 INFO L93 Difference]: Finished difference Result 3554 states and 5367 transitions. [2022-11-22 01:59:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:09,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (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 141 [2022-11-22 01:59:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:09,147 INFO L225 Difference]: With dead ends: 3554 [2022-11-22 01:59:09,148 INFO L226 Difference]: Without dead ends: 2343 [2022-11-22 01:59:09,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:09,168 INFO L413 NwaCegarLoop]: 2002 mSDtfsCounter, 1695 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:09,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 3550 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 01:59:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2022-11-22 01:59:09,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2339. [2022-11-22 01:59:09,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 1336 states have (on average 1.2911676646706587) internal successors, (1725), 1377 states have internal predecessors, (1725), 872 states have call successors, (872), 129 states have call predecessors, (872), 128 states have return successors, (868), 864 states have call predecessors, (868), 868 states have call successors, (868) [2022-11-22 01:59:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3465 transitions. [2022-11-22 01:59:09,511 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3465 transitions. Word has length 141 [2022-11-22 01:59:09,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:09,515 INFO L495 AbstractCegarLoop]: Abstraction has 2339 states and 3465 transitions. [2022-11-22 01:59:09,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (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 01:59:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3465 transitions. [2022-11-22 01:59:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-22 01:59:09,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:09,532 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:09,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:59:09,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:09,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:09,533 INFO L85 PathProgramCache]: Analyzing trace with hash -586008297, now seen corresponding path program 1 times [2022-11-22 01:59:09,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:09,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440820804] [2022-11-22 01:59:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:09,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-22 01:59:10,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:10,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440820804] [2022-11-22 01:59:10,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440820804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:10,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:10,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:10,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362953236] [2022-11-22 01:59:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:10,099 INFO L87 Difference]: Start difference. First operand 2339 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:59:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:13,037 INFO L93 Difference]: Finished difference Result 6545 states and 9657 transitions. [2022-11-22 01:59:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:13,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2022-11-22 01:59:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:13,066 INFO L225 Difference]: With dead ends: 6545 [2022-11-22 01:59:13,067 INFO L226 Difference]: Without dead ends: 4231 [2022-11-22 01:59:13,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:13,078 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 1424 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 3457 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:13,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 3457 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 01:59:13,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2022-11-22 01:59:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4202. [2022-11-22 01:59:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 2401 states have (on average 1.2811328613077884) internal successors, (3076), 2481 states have internal predecessors, (3076), 1555 states have call successors, (1555), 248 states have call predecessors, (1555), 243 states have return successors, (1551), 1532 states have call predecessors, (1551), 1551 states have call successors, (1551) [2022-11-22 01:59:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 6182 transitions. [2022-11-22 01:59:13,372 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 6182 transitions. Word has length 149 [2022-11-22 01:59:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:13,374 INFO L495 AbstractCegarLoop]: Abstraction has 4202 states and 6182 transitions. [2022-11-22 01:59:13,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:59:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 6182 transitions. [2022-11-22 01:59:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-22 01:59:13,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:13,380 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:59:13,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1818964833, now seen corresponding path program 1 times [2022-11-22 01:59:13,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:13,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915927587] [2022-11-22 01:59:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-22 01:59:13,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915927587] [2022-11-22 01:59:13,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915927587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:13,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:13,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920432743] [2022-11-22 01:59:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:13,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:13,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:13,930 INFO L87 Difference]: Start difference. First operand 4202 states and 6182 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 01:59:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:15,385 INFO L93 Difference]: Finished difference Result 8345 states and 12266 transitions. [2022-11-22 01:59:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:15,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 159 [2022-11-22 01:59:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:15,415 INFO L225 Difference]: With dead ends: 8345 [2022-11-22 01:59:15,416 INFO L226 Difference]: Without dead ends: 4168 [2022-11-22 01:59:15,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:15,436 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1730 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:15,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1609 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:59:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2022-11-22 01:59:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 4168. [2022-11-22 01:59:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 2387 states have (on average 1.278173439463762) internal successors, (3051), 2467 states have internal predecessors, (3051), 1531 states have call successors, (1531), 252 states have call predecessors, (1531), 247 states have return successors, (1527), 1508 states have call predecessors, (1527), 1527 states have call successors, (1527) [2022-11-22 01:59:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6109 transitions. [2022-11-22 01:59:15,917 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6109 transitions. Word has length 159 [2022-11-22 01:59:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:15,918 INFO L495 AbstractCegarLoop]: Abstraction has 4168 states and 6109 transitions. [2022-11-22 01:59:15,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 01:59:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6109 transitions. [2022-11-22 01:59:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-22 01:59:15,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:15,922 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:15,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:59:15,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash -620947827, now seen corresponding path program 1 times [2022-11-22 01:59:15,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:15,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572174368] [2022-11-22 01:59:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-22 01:59:16,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:16,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572174368] [2022-11-22 01:59:16,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572174368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:16,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:16,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098616053] [2022-11-22 01:59:16,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:16,452 INFO L87 Difference]: Start difference. First operand 4168 states and 6109 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 01:59:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:17,946 INFO L93 Difference]: Finished difference Result 7535 states and 11000 transitions. [2022-11-22 01:59:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:17,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 158 [2022-11-22 01:59:17,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:17,967 INFO L225 Difference]: With dead ends: 7535 [2022-11-22 01:59:17,967 INFO L226 Difference]: Without dead ends: 3410 [2022-11-22 01:59:17,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:17,987 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 1467 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:17,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1372 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:59:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2022-11-22 01:59:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3410. [2022-11-22 01:59:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 1991 states have (on average 1.2903063787041689) internal successors, (2569), 2049 states have internal predecessors, (2569), 1185 states have call successors, (1185), 236 states have call predecessors, (1185), 231 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-22 01:59:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4935 transitions. [2022-11-22 01:59:18,290 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4935 transitions. Word has length 158 [2022-11-22 01:59:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:18,291 INFO L495 AbstractCegarLoop]: Abstraction has 3410 states and 4935 transitions. [2022-11-22 01:59:18,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 01:59:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4935 transitions. [2022-11-22 01:59:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-22 01:59:18,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:18,298 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 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 01:59:18,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:59:18,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 309615161, now seen corresponding path program 1 times [2022-11-22 01:59:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:18,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346153200] [2022-11-22 01:59:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2022-11-22 01:59:19,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:19,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346153200] [2022-11-22 01:59:19,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346153200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:19,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:19,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380716080] [2022-11-22 01:59:19,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:19,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:19,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:19,028 INFO L87 Difference]: Start difference. First operand 3410 states and 4935 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 01:59:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:21,696 INFO L93 Difference]: Finished difference Result 3416 states and 4940 transitions. [2022-11-22 01:59:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:21,697 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 183 [2022-11-22 01:59:21,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:21,718 INFO L225 Difference]: With dead ends: 3416 [2022-11-22 01:59:21,718 INFO L226 Difference]: Without dead ends: 3414 [2022-11-22 01:59:21,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:21,722 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 1456 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:21,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 3899 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 01:59:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-11-22 01:59:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3414. [2022-11-22 01:59:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 1994 states have (on average 1.2898696088264794) internal successors, (2572), 2052 states have internal predecessors, (2572), 1185 states have call successors, (1185), 237 states have call predecessors, (1185), 232 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-22 01:59:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4938 transitions. [2022-11-22 01:59:22,043 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4938 transitions. Word has length 183 [2022-11-22 01:59:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:22,045 INFO L495 AbstractCegarLoop]: Abstraction has 3414 states and 4938 transitions. [2022-11-22 01:59:22,045 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 01:59:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4938 transitions. [2022-11-22 01:59:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-22 01:59:22,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:22,050 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 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] [2022-11-22 01:59:22,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:59:22,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash -250367062, now seen corresponding path program 1 times [2022-11-22 01:59:22,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:22,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891994418] [2022-11-22 01:59:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:22,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-11-22 01:59:22,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:22,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891994418] [2022-11-22 01:59:22,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891994418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:22,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:22,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71921659] [2022-11-22 01:59:22,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:22,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:22,753 INFO L87 Difference]: Start difference. First operand 3414 states and 4938 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 01:59:25,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:59:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:26,677 INFO L93 Difference]: Finished difference Result 3420 states and 4943 transitions. [2022-11-22 01:59:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 191 [2022-11-22 01:59:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:26,700 INFO L225 Difference]: With dead ends: 3420 [2022-11-22 01:59:26,701 INFO L226 Difference]: Without dead ends: 3418 [2022-11-22 01:59:26,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:26,705 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:26,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 01:59:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2022-11-22 01:59:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3418. [2022-11-22 01:59:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 1997 states have (on average 1.2894341512268404) internal successors, (2575), 2055 states have internal predecessors, (2575), 1185 states have call successors, (1185), 238 states have call predecessors, (1185), 233 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-22 01:59:27,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 4941 transitions. [2022-11-22 01:59:27,105 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 4941 transitions. Word has length 191 [2022-11-22 01:59:27,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:27,108 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 4941 transitions. [2022-11-22 01:59:27,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 01:59:27,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 4941 transitions. [2022-11-22 01:59:27,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-22 01:59:27,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:27,114 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:27,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:59:27,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:27,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash 223436409, now seen corresponding path program 1 times [2022-11-22 01:59:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:27,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054864882] [2022-11-22 01:59:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2022-11-22 01:59:27,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:27,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054864882] [2022-11-22 01:59:27,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054864882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:27,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:27,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:27,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320125782] [2022-11-22 01:59:27,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:27,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:27,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:27,859 INFO L87 Difference]: Start difference. First operand 3418 states and 4941 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 01:59:30,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:59:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:31,603 INFO L93 Difference]: Finished difference Result 3424 states and 4946 transitions. [2022-11-22 01:59:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:31,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 193 [2022-11-22 01:59:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:31,622 INFO L225 Difference]: With dead ends: 3424 [2022-11-22 01:59:31,623 INFO L226 Difference]: Without dead ends: 3422 [2022-11-22 01:59:31,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:31,626 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:31,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-22 01:59:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2022-11-22 01:59:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3422. [2022-11-22 01:59:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 2000 states have (on average 1.289) internal successors, (2578), 2058 states have internal predecessors, (2578), 1185 states have call successors, (1185), 239 states have call predecessors, (1185), 234 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-22 01:59:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4944 transitions. [2022-11-22 01:59:31,988 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4944 transitions. Word has length 193 [2022-11-22 01:59:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:31,988 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 4944 transitions. [2022-11-22 01:59:31,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 01:59:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4944 transitions. [2022-11-22 01:59:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-22 01:59:31,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:31,993 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:31,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:59:31,994 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:31,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:31,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1115605334, now seen corresponding path program 1 times [2022-11-22 01:59:31,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:31,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191000924] [2022-11-22 01:59:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:31,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2022-11-22 01:59:32,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:32,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191000924] [2022-11-22 01:59:32,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191000924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:32,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:32,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:32,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514675501] [2022-11-22 01:59:32,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:32,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:32,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:32,649 INFO L87 Difference]: Start difference. First operand 3422 states and 4944 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:59:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:34,778 INFO L93 Difference]: Finished difference Result 3428 states and 4949 transitions. [2022-11-22 01:59:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:34,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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 201 [2022-11-22 01:59:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:34,803 INFO L225 Difference]: With dead ends: 3428 [2022-11-22 01:59:34,808 INFO L226 Difference]: Without dead ends: 3426 [2022-11-22 01:59:34,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:34,813 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:34,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 01:59:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-11-22 01:59:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3426. [2022-11-22 01:59:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2003 states have (on average 1.288567149276086) internal successors, (2581), 2061 states have internal predecessors, (2581), 1185 states have call successors, (1185), 240 states have call predecessors, (1185), 235 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-22 01:59:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4947 transitions. [2022-11-22 01:59:35,143 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4947 transitions. Word has length 201 [2022-11-22 01:59:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:35,144 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4947 transitions. [2022-11-22 01:59:35,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:59:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4947 transitions. [2022-11-22 01:59:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-22 01:59:35,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:35,151 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:35,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:59:35,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 14463922, now seen corresponding path program 1 times [2022-11-22 01:59:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:35,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609136999] [2022-11-22 01:59:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2022-11-22 01:59:35,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:35,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609136999] [2022-11-22 01:59:35,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609136999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:35,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:35,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888883699] [2022-11-22 01:59:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:35,825 INFO L87 Difference]: Start difference. First operand 3426 states and 4947 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:59:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:37,910 INFO L93 Difference]: Finished difference Result 3432 states and 4952 transitions. [2022-11-22 01:59:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:37,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 207 [2022-11-22 01:59:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:37,929 INFO L225 Difference]: With dead ends: 3432 [2022-11-22 01:59:37,929 INFO L226 Difference]: Without dead ends: 3430 [2022-11-22 01:59:37,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:37,932 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:37,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 01:59:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2022-11-22 01:59:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3430. [2022-11-22 01:59:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 2006 states have (on average 1.2881355932203389) internal successors, (2584), 2064 states have internal predecessors, (2584), 1185 states have call successors, (1185), 241 states have call predecessors, (1185), 236 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-22 01:59:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 4950 transitions. [2022-11-22 01:59:38,388 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 4950 transitions. Word has length 207 [2022-11-22 01:59:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:38,390 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 4950 transitions. [2022-11-22 01:59:38,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:59:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 4950 transitions. [2022-11-22 01:59:38,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-22 01:59:38,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:38,398 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 5, 5, 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] [2022-11-22 01:59:38,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:59:38,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:38,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash -812078678, now seen corresponding path program 1 times [2022-11-22 01:59:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:38,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099862578] [2022-11-22 01:59:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2022-11-22 01:59:39,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:39,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099862578] [2022-11-22 01:59:39,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099862578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:39,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:39,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:39,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788471443] [2022-11-22 01:59:39,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:39,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:39,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:39,222 INFO L87 Difference]: Start difference. First operand 3430 states and 4950 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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 01:59:41,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:59:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:42,270 INFO L93 Difference]: Finished difference Result 3436 states and 4955 transitions. [2022-11-22 01:59:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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 211 [2022-11-22 01:59:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:42,288 INFO L225 Difference]: With dead ends: 3436 [2022-11-22 01:59:42,288 INFO L226 Difference]: Without dead ends: 3434 [2022-11-22 01:59:42,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:42,292 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:42,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 01:59:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-22 01:59:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3434. [2022-11-22 01:59:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 2009 states have (on average 1.2877053260328521) internal successors, (2587), 2067 states have internal predecessors, (2587), 1185 states have call successors, (1185), 242 states have call predecessors, (1185), 237 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-22 01:59:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4953 transitions. [2022-11-22 01:59:42,680 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4953 transitions. Word has length 211 [2022-11-22 01:59:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:42,681 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 4953 transitions. [2022-11-22 01:59:42,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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 01:59:42,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4953 transitions. [2022-11-22 01:59:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-22 01:59:42,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:42,686 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 7, 6, 6, 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] [2022-11-22 01:59:42,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:59:42,686 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1088050354, now seen corresponding path program 1 times [2022-11-22 01:59:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:42,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829055823] [2022-11-22 01:59:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:42,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2022-11-22 01:59:43,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:43,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829055823] [2022-11-22 01:59:43,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829055823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:43,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:43,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:43,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776927065] [2022-11-22 01:59:43,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:43,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:43,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:43,331 INFO L87 Difference]: Start difference. First operand 3434 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 01:59:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:45,437 INFO L93 Difference]: Finished difference Result 3548 states and 5070 transitions. [2022-11-22 01:59:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:45,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 217 [2022-11-22 01:59:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:45,452 INFO L225 Difference]: With dead ends: 3548 [2022-11-22 01:59:45,453 INFO L226 Difference]: Without dead ends: 3546 [2022-11-22 01:59:45,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:45,455 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1244 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:45,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 4170 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 01:59:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2022-11-22 01:59:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 3546. [2022-11-22 01:59:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 2070 states have (on average 1.2821256038647344) internal successors, (2654), 2132 states have internal predecessors, (2654), 1209 states have call successors, (1209), 269 states have call predecessors, (1209), 264 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-22 01:59:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 5068 transitions. [2022-11-22 01:59:45,819 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 5068 transitions. Word has length 217 [2022-11-22 01:59:45,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:45,820 INFO L495 AbstractCegarLoop]: Abstraction has 3546 states and 5068 transitions. [2022-11-22 01:59:45,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 01:59:45,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 5068 transitions. [2022-11-22 01:59:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-22 01:59:45,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:45,825 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:45,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:59:45,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:45,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1388727309, now seen corresponding path program 1 times [2022-11-22 01:59:45,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:45,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230405900] [2022-11-22 01:59:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:45,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2022-11-22 01:59:46,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:46,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230405900] [2022-11-22 01:59:46,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230405900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:46,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:46,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:46,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625183047] [2022-11-22 01:59:46,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:46,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:46,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:46,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:46,460 INFO L87 Difference]: Start difference. First operand 3546 states and 5068 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 01:59:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:49,842 INFO L93 Difference]: Finished difference Result 3552 states and 5073 transitions. [2022-11-22 01:59:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:49,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 218 [2022-11-22 01:59:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:49,860 INFO L225 Difference]: With dead ends: 3552 [2022-11-22 01:59:49,861 INFO L226 Difference]: Without dead ends: 3550 [2022-11-22 01:59:49,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:49,864 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:49,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 01:59:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2022-11-22 01:59:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3550. [2022-11-22 01:59:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2073 states have (on average 1.281717317896768) internal successors, (2657), 2135 states have internal predecessors, (2657), 1209 states have call successors, (1209), 270 states have call predecessors, (1209), 265 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-22 01:59:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 5071 transitions. [2022-11-22 01:59:50,331 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 5071 transitions. Word has length 218 [2022-11-22 01:59:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:50,332 INFO L495 AbstractCegarLoop]: Abstraction has 3550 states and 5071 transitions. [2022-11-22 01:59:50,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 01:59:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 5071 transitions. [2022-11-22 01:59:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-22 01:59:50,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:50,340 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 9, 8, 8, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:50,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:59:50,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1847999300, now seen corresponding path program 1 times [2022-11-22 01:59:50,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:50,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136311735] [2022-11-22 01:59:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:50,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2022-11-22 01:59:51,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:51,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136311735] [2022-11-22 01:59:51,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136311735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:51,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:51,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915205586] [2022-11-22 01:59:51,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:51,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:51,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:51,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:51,017 INFO L87 Difference]: Start difference. First operand 3550 states and 5071 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 01:59:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:53,328 INFO L93 Difference]: Finished difference Result 3556 states and 5076 transitions. [2022-11-22 01:59:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:53,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 226 [2022-11-22 01:59:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:53,342 INFO L225 Difference]: With dead ends: 3556 [2022-11-22 01:59:53,342 INFO L226 Difference]: Without dead ends: 3554 [2022-11-22 01:59:53,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:53,346 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:53,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 01:59:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2022-11-22 01:59:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3554. [2022-11-22 01:59:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2076 states have (on average 1.28131021194605) internal successors, (2660), 2138 states have internal predecessors, (2660), 1209 states have call successors, (1209), 271 states have call predecessors, (1209), 266 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-22 01:59:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 5074 transitions. [2022-11-22 01:59:53,841 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 5074 transitions. Word has length 226 [2022-11-22 01:59:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:53,842 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 5074 transitions. [2022-11-22 01:59:53,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 01:59:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 5074 transitions. [2022-11-22 01:59:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-22 01:59:53,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:53,847 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:53,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:59:53,848 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 01:59:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash -291766451, now seen corresponding path program 1 times [2022-11-22 01:59:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:53,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499089917] [2022-11-22 01:59:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:53,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-11-22 01:59:54,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:54,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499089917] [2022-11-22 01:59:54,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499089917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:54,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:54,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:54,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676589723] [2022-11-22 01:59:54,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:54,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:54,449 INFO L87 Difference]: Start difference. First operand 3554 states and 5074 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:59:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:57,348 INFO L93 Difference]: Finished difference Result 3560 states and 5079 transitions. [2022-11-22 01:59:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:57,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 228 [2022-11-22 01:59:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:57,368 INFO L225 Difference]: With dead ends: 3560 [2022-11-22 01:59:57,368 INFO L226 Difference]: Without dead ends: 3558 [2022-11-22 01:59:57,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:57,371 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:57,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 01:59:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2022-11-22 01:59:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3558. [2022-11-22 01:59:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 2079 states have (on average 1.280904280904281) internal successors, (2663), 2141 states have internal predecessors, (2663), 1209 states have call successors, (1209), 272 states have call predecessors, (1209), 267 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-22 01:59:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5077 transitions. [2022-11-22 01:59:57,811 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5077 transitions. Word has length 228 [2022-11-22 01:59:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:57,812 INFO L495 AbstractCegarLoop]: Abstraction has 3558 states and 5077 transitions. [2022-11-22 01:59:57,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:59:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5077 transitions. [2022-11-22 01:59:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-22 01:59:57,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:57,818 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 11, 10, 10, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:57,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:59:57,818 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1085767364, now seen corresponding path program 1 times [2022-11-22 01:59:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:57,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278513766] [2022-11-22 01:59:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2022-11-22 01:59:58,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:58,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278513766] [2022-11-22 01:59:58,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278513766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:58,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:58,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156998709] [2022-11-22 01:59:58,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:58,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:58,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:58,423 INFO L87 Difference]: Start difference. First operand 3558 states and 5077 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:00:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:00,547 INFO L93 Difference]: Finished difference Result 3564 states and 5082 transitions. [2022-11-22 02:00:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:00:00,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 236 [2022-11-22 02:00:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:00,563 INFO L225 Difference]: With dead ends: 3564 [2022-11-22 02:00:00,563 INFO L226 Difference]: Without dead ends: 3560 [2022-11-22 02:00:00,566 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 02:00:00,567 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:00,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 02:00:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2022-11-22 02:00:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3560. [2022-11-22 02:00:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2081 states have (on average 1.280153772224892) internal successors, (2664), 2142 states have internal predecessors, (2664), 1209 states have call successors, (1209), 273 states have call predecessors, (1209), 267 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-22 02:00:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 5078 transitions. [2022-11-22 02:00:01,029 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 5078 transitions. Word has length 236 [2022-11-22 02:00:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:01,030 INFO L495 AbstractCegarLoop]: Abstraction has 3560 states and 5078 transitions. [2022-11-22 02:00:01,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:00:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 5078 transitions. [2022-11-22 02:00:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-22 02:00:01,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:01,036 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 12, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:01,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:00:01,036 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 02:00:01,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:01,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1105026390, now seen corresponding path program 1 times [2022-11-22 02:00:01,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:01,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561295104] [2022-11-22 02:00:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:01,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-11-22 02:00:01,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:01,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561295104] [2022-11-22 02:00:01,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561295104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:01,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:01,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:01,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036474067] [2022-11-22 02:00:01,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:01,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:01,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:01,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:01,638 INFO L87 Difference]: Start difference. First operand 3560 states and 5078 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 02:00:03,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:03,995 INFO L93 Difference]: Finished difference Result 3560 states and 5078 transitions. [2022-11-22 02:00:04,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:00:04,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 241 [2022-11-22 02:00:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:04,016 INFO L225 Difference]: With dead ends: 3560 [2022-11-22 02:00:04,016 INFO L226 Difference]: Without dead ends: 3479 [2022-11-22 02:00:04,019 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 02:00:04,020 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 1446 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:04,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3899 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 02:00:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-11-22 02:00:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3479. [2022-11-22 02:00:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 2041 states have (on average 1.282704556589907) internal successors, (2618), 2096 states have internal predecessors, (2618), 1182 states have call successors, (1182), 258 states have call predecessors, (1182), 254 states have return successors, (1182), 1166 states have call predecessors, (1182), 1182 states have call successors, (1182) [2022-11-22 02:00:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 4982 transitions. [2022-11-22 02:00:04,666 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 4982 transitions. Word has length 241 [2022-11-22 02:00:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:04,667 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 4982 transitions. [2022-11-22 02:00:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 02:00:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 4982 transitions. [2022-11-22 02:00:04,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-22 02:00:04,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:04,675 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 12, 12, 12, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:04,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:00:04,675 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 02:00:04,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:04,676 INFO L85 PathProgramCache]: Analyzing trace with hash -330424869, now seen corresponding path program 1 times [2022-11-22 02:00:04,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:04,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912784783] [2022-11-22 02:00:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:04,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2022-11-22 02:00:05,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:05,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912784783] [2022-11-22 02:00:05,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912784783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:05,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:05,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132574276] [2022-11-22 02:00:05,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:05,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:05,122 INFO L87 Difference]: Start difference. First operand 3479 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:00:08,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:08,094 INFO L93 Difference]: Finished difference Result 5949 states and 8505 transitions. [2022-11-22 02:00:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:08,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 247 [2022-11-22 02:00:08,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:08,105 INFO L225 Difference]: With dead ends: 5949 [2022-11-22 02:00:08,105 INFO L226 Difference]: Without dead ends: 2513 [2022-11-22 02:00:08,118 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 02:00:08,119 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 716 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:08,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2919 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 02:00:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-11-22 02:00:08,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2507. [2022-11-22 02:00:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1501 states have (on average 1.2698201199200534) internal successors, (1906), 1538 states have internal predecessors, (1906), 815 states have call successors, (815), 191 states have call predecessors, (815), 189 states have return successors, (815), 804 states have call predecessors, (815), 815 states have call successors, (815) [2022-11-22 02:00:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3536 transitions. [2022-11-22 02:00:08,427 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3536 transitions. Word has length 247 [2022-11-22 02:00:08,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:08,428 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3536 transitions. [2022-11-22 02:00:08,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:00:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3536 transitions. [2022-11-22 02:00:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-22 02:00:08,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:08,433 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 12, 12, 12, 12, 12, 12, 5, 5, 4, 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] [2022-11-22 02:00:08,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:00:08,434 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 02:00:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1220741242, now seen corresponding path program 1 times [2022-11-22 02:00:08,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:08,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803781286] [2022-11-22 02:00:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:08,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-22 02:00:08,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803781286] [2022-11-22 02:00:08,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803781286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:08,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:08,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071270564] [2022-11-22 02:00:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:08,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:08,832 INFO L87 Difference]: Start difference. First operand 2507 states and 3536 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-22 02:00:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:10,992 INFO L93 Difference]: Finished difference Result 5577 states and 7886 transitions. [2022-11-22 02:00:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:10,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 294 [2022-11-22 02:00:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:11,000 INFO L225 Difference]: With dead ends: 5577 [2022-11-22 02:00:11,000 INFO L226 Difference]: Without dead ends: 3172 [2022-11-22 02:00:11,009 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 02:00:11,010 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 724 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:11,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3081 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 02:00:11,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-11-22 02:00:11,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3166. [2022-11-22 02:00:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 1899 states have (on average 1.2669826224328593) internal successors, (2406), 1945 states have internal predecessors, (2406), 1020 states have call successors, (1020), 247 states have call predecessors, (1020), 245 states have return successors, (1020), 1006 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-11-22 02:00:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 4446 transitions. [2022-11-22 02:00:11,459 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 4446 transitions. Word has length 294 [2022-11-22 02:00:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:11,460 INFO L495 AbstractCegarLoop]: Abstraction has 3166 states and 4446 transitions. [2022-11-22 02:00:11,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-22 02:00:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 4446 transitions. [2022-11-22 02:00:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-22 02:00:11,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:11,466 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:11,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:00:11,466 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 02:00:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:11,467 INFO L85 PathProgramCache]: Analyzing trace with hash -781891628, now seen corresponding path program 1 times [2022-11-22 02:00:11,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:11,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369625122] [2022-11-22 02:00:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:11,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2022-11-22 02:00:11,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:11,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369625122] [2022-11-22 02:00:11,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369625122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:11,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:11,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:11,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554773946] [2022-11-22 02:00:11,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:11,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:11,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:11,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:11,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:11,934 INFO L87 Difference]: Start difference. First operand 3166 states and 4446 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 02:00:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:14,179 INFO L93 Difference]: Finished difference Result 6242 states and 8809 transitions. [2022-11-22 02:00:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:14,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 338 [2022-11-22 02:00:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:14,194 INFO L225 Difference]: With dead ends: 6242 [2022-11-22 02:00:14,194 INFO L226 Difference]: Without dead ends: 3178 [2022-11-22 02:00:14,206 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 02:00:14,206 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 1 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:14,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2517 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 02:00:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2022-11-22 02:00:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 3170. [2022-11-22 02:00:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 1903 states have (on average 1.2664214398318445) internal successors, (2410), 1949 states have internal predecessors, (2410), 1020 states have call successors, (1020), 247 states have call predecessors, (1020), 245 states have return successors, (1020), 1006 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-11-22 02:00:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4450 transitions. [2022-11-22 02:00:14,698 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4450 transitions. Word has length 338 [2022-11-22 02:00:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:14,699 INFO L495 AbstractCegarLoop]: Abstraction has 3170 states and 4450 transitions. [2022-11-22 02:00:14,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 02:00:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4450 transitions. [2022-11-22 02:00:14,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-22 02:00:14,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:14,707 INFO L195 NwaCegarLoop]: trace histogram [18, 15, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:14,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:00:14,708 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:00:14,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:14,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1692106582, now seen corresponding path program 1 times [2022-11-22 02:00:14,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:14,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388580036] [2022-11-22 02:00:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-11-22 02:00:15,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:15,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388580036] [2022-11-22 02:00:15,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388580036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:15,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601092321] [2022-11-22 02:00:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:15,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:15,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:15,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:15,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c080c1-00d3-4c43-bfbf-7d3f923d4ef5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:00:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:16,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 4608 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:00:16,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-11-22 02:00:16,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:00:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-11-22 02:00:17,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601092321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:00:17,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1044239913] [2022-11-22 02:00:17,253 INFO L159 IcfgInterpreter]: Started Sifa with 176 locations of interest [2022-11-22 02:00:17,254 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:00:17,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:00:17,264 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:00:17,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:00:30,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-22 02:00:31,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-22 02:00:33,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21