./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-intel-ixgbevf-ixgbevf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7 --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 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:34:29,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:34:29,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:34:29,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:34:29,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:34:29,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:34:29,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:34:29,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:34:29,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:34:29,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:34:29,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:34:29,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:34:29,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:34:29,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:34:29,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:34:29,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:34:29,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:34:29,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:34:29,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:34:29,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:34:29,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:34:29,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:34:29,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:34:29,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:34:29,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:34:29,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:34:29,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:34:29,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:34:29,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:34:29,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:34:29,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:34:29,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:34:29,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:34:29,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:34:29,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:34:29,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:34:29,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:34:29,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:34:29,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:34:29,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:34:29,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:34:29,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:34:29,531 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:34:29,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:34:29,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:34:29,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:34:29,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:34:29,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:34:29,533 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:34:29,533 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:34:29,534 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:34:29,534 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:34:29,534 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:34:29,534 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:34:29,535 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:34:29,535 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:34:29,535 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:34:29,535 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:34:29,536 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:34:29,536 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:34:29,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:34:29,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:34:29,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:34:29,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:34:29,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:34:29,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:34:29,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:34:29,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:34:29,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:34:29,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:34:29,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:34:29,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:34:29,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:34:29,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:34:29,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:34:29,540 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:34:29,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:34:29,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:34:29,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:34:29,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:34:29,541 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac [2021-11-25 19:34:29,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:34:29,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:34:29,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:34:29,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:34:29,810 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:34:29,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-25 19:34:29,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/data/ba972daab/6ef30fd06e9b4a6b88f89db65d0739b3/FLAGea8305317 [2021-11-25 19:34:31,073 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:34:31,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-25 19:34:31,156 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/data/ba972daab/6ef30fd06e9b4a6b88f89db65d0739b3/FLAGea8305317 [2021-11-25 19:34:31,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/data/ba972daab/6ef30fd06e9b4a6b88f89db65d0739b3 [2021-11-25 19:34:31,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:34:31,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:34:31,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:34:31,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:34:31,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:34:31,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:34:31" (1/1) ... [2021-11-25 19:34:31,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af98591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:31, skipping insertion in model container [2021-11-25 19:34:31,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:34:31" (1/1) ... [2021-11-25 19:34:31,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:34:31,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:34:37,472 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2021-11-25 19:34:37,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2021-11-25 19:34:37,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2021-11-25 19:34:37,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2021-11-25 19:34:37,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:34:37,632 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:34:38,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2021-11-25 19:34:38,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2021-11-25 19:34:38,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2021-11-25 19:34:38,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2021-11-25 19:34:38,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:34:38,767 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:34:38,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38 WrapperNode [2021-11-25 19:34:38,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:34:38,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:34:38,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:34:38,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:34:38,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:38,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:39,384 INFO L137 Inliner]: procedures = 740, calls = 4332, calls flagged for inlining = 368, calls inlined = 334, statements flattened = 9898 [2021-11-25 19:34:39,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:34:39,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:34:39,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:34:39,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:34:39,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:39,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:39,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:39,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:39,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:39,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:39,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:39,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:34:39,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:34:39,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:34:39,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:34:40,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (1/1) ... [2021-11-25 19:34:40,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:34:40,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:34:40,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:34:40,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40eab881-ee79-4089-9046-de78772725f3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:34:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 19:34:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 19:34:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:34:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:34:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:34:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:34:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-11-25 19:34:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-11-25 19:34:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_irq [2021-11-25 19:34:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_irq [2021-11-25 19:34:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_rx_resources [2021-11-25 19:34:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_rx_resources [2021-11-25 19:34:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:34:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:34:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_ctxtdesc [2021-11-25 19:34:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_ctxtdesc [2021-11-25 19:34:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure skb_header_pointer [2021-11-25 19:34:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_header_pointer [2021-11-25 19:34:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:34:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:34:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_eitr [2021-11-25 19:34:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_eitr [2021-11-25 19:34:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-25 19:34:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-25 19:34:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:34:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:34:40,087 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_uc_addr_vf [2021-11-25 19:34:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_uc_addr_vf [2021-11-25 19:34:40,087 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-25 19:34:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-25 19:34:40,087 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:34:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:34:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:34:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:34:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2021-11-25 19:34:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2021-11-25 19:34:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:34:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:34:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_desc_unused [2021-11-25 19:34:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_desc_unused [2021-11-25 19:34:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2021-11-25 19:34:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2021-11-25 19:34:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_tx_resources [2021-11-25 19:34:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_tx_resources [2021-11-25 19:34:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_remove [2021-11-25 19:34:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_remove [2021-11-25 19:34:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:34:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:34:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:34:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:34:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:34:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:34:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 19:34:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 19:34:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:34:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:34:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:34:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:34:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 19:34:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 19:34:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:34:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 19:34:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 19:34:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_resume [2021-11-25 19:34:40,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_resume [2021-11-25 19:34:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 19:34:40,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 19:34:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-25 19:34:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-25 19:34:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 19:34:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 19:34:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_mbx_vf [2021-11-25 19:34:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_mbx_vf [2021-11-25 19:34:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2021-11-25 19:34:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2021-11-25 19:34:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_mbx_vf [2021-11-25 19:34:40,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_mbx_vf [2021-11-25 19:34:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:34:40,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:34:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 19:34:40,097 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 19:34:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:34:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reinit_locked [2021-11-25 19:34:40,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reinit_locked [2021-11-25 19:34:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up [2021-11-25 19:34:40,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up [2021-11-25 19:34:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 19:34:40,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 19:34:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:34:40,099 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:34:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:34:40,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:34:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_irq [2021-11-25 19:34:40,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_irq [2021-11-25 19:34:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rar_vf [2021-11-25 19:34:40,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rar_vf [2021-11-25 19:34:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:34:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:34:40,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:34:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_78 [2021-11-25 19:34:40,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_78 [2021-11-25 19:34:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2021-11-25 19:34:40,101 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2021-11-25 19:34:40,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:34:40,102 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:34:40,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:34:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_vfta_vf [2021-11-25 19:34:40,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_vfta_vf [2021-11-25 19:34:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-25 19:34:40,105 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-25 19:34:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:34:40,106 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:34:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_down [2021-11-25 19:34:40,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_down [2021-11-25 19:34:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 19:34:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 19:34:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 19:34:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 19:34:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:34:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:34:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_txq [2021-11-25 19:34:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_txq [2021-11-25 19:34:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-25 19:34:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-25 19:34:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_rx_resources [2021-11-25 19:34:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_rx_resources [2021-11-25 19:34:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:34:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:34:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_94 [2021-11-25 19:34:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_94 [2021-11-25 19:34:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 19:34:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 19:34:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_timeout [2021-11-25 19:34:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_timeout [2021-11-25 19:34:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:34:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:34:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-25 19:34:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-25 19:34:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_negotiate_api [2021-11-25 19:34:40,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_negotiate_api [2021-11-25 19:34:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:34:40,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:34:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:34:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:34:40,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:34:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:34:40,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:34:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 19:34:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 19:34:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_alloc_rx_buffers [2021-11-25 19:34:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_alloc_rx_buffers [2021-11-25 19:34:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 19:34:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 19:34:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_interrupt_scheme [2021-11-25 19:34:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_interrupt_scheme [2021-11-25 19:34:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-25 19:34:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-25 19:34:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:34:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 19:34:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 19:34:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:34:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:34:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:34:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:34:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:34:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:34:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_tx_resources [2021-11-25 19:34:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_tx_resources [2021-11-25 19:34:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2021-11-25 19:34:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2021-11-25 19:34:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-25 19:34:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-25 19:34:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_maybe_stop_tx [2021-11-25 19:34:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_maybe_stop_tx [2021-11-25 19:34:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_msg_vf [2021-11-25 19:34:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_msg_vf [2021-11-25 19:34:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 19:34:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 19:34:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_busy_poll_recv [2021-11-25 19:34:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_busy_poll_recv [2021-11-25 19:34:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2021-11-25 19:34:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2021-11-25 19:34:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2021-11-25 19:34:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2021-11-25 19:34:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 19:34:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 19:34:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 19:34:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 19:34:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:34:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:34:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-25 19:34:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-25 19:34:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_last_counter_stats [2021-11-25 19:34:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_last_counter_stats [2021-11-25 19:34:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_io_resume [2021-11-25 19:34:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_io_resume [2021-11-25 19:34:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 19:34:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 19:34:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up_complete [2021-11-25 19:34:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up_complete [2021-11-25 19:34:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-25 19:34:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-25 19:34:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_ivar [2021-11-25 19:34:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_ivar [2021-11-25 19:34:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_bit_vf [2021-11-25 19:34:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_bit_vf [2021-11-25 19:34:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:34:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:34:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:34:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:34:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_shutdown [2021-11-25 19:34:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_shutdown [2021-11-25 19:34:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_interrupt_capability [2021-11-25 19:34:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_interrupt_capability [2021-11-25 19:34:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:34:40,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:34:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 19:34:40,124 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 19:34:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_nway_reset [2021-11-25 19:34:40,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_nway_reset [2021-11-25 19:34:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 19:34:40,124 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 19:34:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_obtain_mbx_lock_vf [2021-11-25 19:34:40,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_obtain_mbx_lock_vf [2021-11-25 19:34:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_tx_ring [2021-11-25 19:34:40,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_tx_ring [2021-11-25 19:34:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_rst_vf [2021-11-25 19:34:40,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_rst_vf [2021-11-25 19:34:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_v2p_mailbox [2021-11-25 19:34:40,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_v2p_mailbox [2021-11-25 19:34:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:34:40,125 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:34:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_ack_vf [2021-11-25 19:34:40,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_ack_vf [2021-11-25 19:34:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:34:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:34:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:34:40,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:34:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_stats [2021-11-25 19:34:40,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_stats [2021-11-25 19:34:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 19:34:40,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 19:34:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_irq_enable [2021-11-25 19:34:40,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_irq_enable [2021-11-25 19:34:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:34:40,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:34:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 19:34:40,132 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 19:34:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 19:34:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 19:34:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 19:34:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_start_hw_vf [2021-11-25 19:34:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_start_hw_vf [2021-11-25 19:34:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-25 19:34:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-25 19:34:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 19:34:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 19:34:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure napi_hash_del [2021-11-25 19:34:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_hash_del [2021-11-25 19:34:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 19:34:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 19:34:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2021-11-25 19:34:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2021-11-25 19:34:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_all_queues [2021-11-25 19:34:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_all_queues [2021-11-25 19:34:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rx_mode [2021-11-25 19:34:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rx_mode [2021-11-25 19:34:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 19:34:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 19:34:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 19:34:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 19:34:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:34:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:34:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2021-11-25 19:34:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2021-11-25 19:34:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2021-11-25 19:34:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2021-11-25 19:34:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_suspend [2021-11-25 19:34:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_suspend [2021-11-25 19:34:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 19:34:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 19:34:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-25 19:34:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-25 19:34:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:34:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:34:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:34:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:34:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:34:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 19:34:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 19:34:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:34:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:34:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_link_test [2021-11-25 19:34:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_link_test [2021-11-25 19:34:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:34:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_vlan_rx_add_vid [2021-11-25 19:34:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_vlan_rx_add_vid [2021-11-25 19:34:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_rxq [2021-11-25 19:34:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_rxq [2021-11-25 19:34:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2021-11-25 19:34:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2021-11-25 19:34:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-25 19:34:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-25 19:34:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 19:34:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 19:34:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:34:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_mac_addr_vf [2021-11-25 19:34:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_mac_addr_vf [2021-11-25 19:34:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_configure [2021-11-25 19:34:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_configure [2021-11-25 19:34:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_tx_resources [2021-11-25 19:34:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_tx_resources [2021-11-25 19:34:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:34:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:34:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 19:34:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 19:34:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_queues [2021-11-25 19:34:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_queues [2021-11-25 19:34:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:34:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:34:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 19:34:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 19:34:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2021-11-25 19:34:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2021-11-25 19:34:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:34:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:34:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:34:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:34:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 19:34:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 19:34:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:34:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:34:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 19:34:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 19:34:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_open [2021-11-25 19:34:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_open [2021-11-25 19:34:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-25 19:34:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-25 19:34:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_93 [2021-11-25 19:34:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_93 [2021-11-25 19:34:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2021-11-25 19:34:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2021-11-25 19:34:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_mac_link_vf [2021-11-25 19:34:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_mac_link_vf [2021-11-25 19:34:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clear_interrupt_scheme [2021-11-25 19:34:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clear_interrupt_scheme [2021-11-25 19:34:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_regs_len [2021-11-25 19:34:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_regs_len [2021-11-25 19:34:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 19:34:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 19:34:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:34:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:34:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:34:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:34:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 19:34:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 19:34:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2021-11-25 19:34:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2021-11-25 19:34:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_rx_resources [2021-11-25 19:34:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_rx_resources [2021-11-25 19:34:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:34:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:34:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_77 [2021-11-25 19:34:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_77 [2021-11-25 19:34:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 19:34:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 19:34:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:34:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:34:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:34:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_mbx_params_vf [2021-11-25 19:34:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_mbx_params_vf [2021-11-25 19:34:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-25 19:34:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-25 19:34:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_q_vectors [2021-11-25 19:34:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_q_vectors [2021-11-25 19:34:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:34:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:34:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_disable_rx_queue [2021-11-25 19:34:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_disable_rx_queue [2021-11-25 19:34:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset [2021-11-25 19:34:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset [2021-11-25 19:34:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_close [2021-11-25 19:34:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_close [2021-11-25 19:34:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 19:34:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 19:34:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-25 19:34:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-25 19:34:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-25 19:34:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-25 19:34:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:34:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:34:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-25 19:34:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-25 19:34:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 19:34:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 19:34:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-25 19:34:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-25 19:34:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-25 19:34:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-25 19:34:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 19:34:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 19:34:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-25 19:34:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-25 19:34:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:34:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:34:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 19:34:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 19:34:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 19:34:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 19:34:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_ring [2021-11-25 19:34:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_ring [2021-11-25 19:34:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_stop_hw_vf [2021-11-25 19:34:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_stop_hw_vf [2021-11-25 19:34:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-25 19:34:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-25 19:34:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2021-11-25 19:34:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2021-11-25 19:34:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-25 19:34:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-25 19:34:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:34:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:34:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_unmap_and_free_tx_resource [2021-11-25 19:34:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_unmap_and_free_tx_resource [2021-11-25 19:34:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:34:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-25 19:34:40,155 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-25 19:34:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:34:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:34:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2021-11-25 19:34:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2021-11-25 19:34:41,692 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:34:41,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:34:41,967 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:37:41,357 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:37:41,515 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:37:45,689 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:37:45,689 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-25 19:37:45,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:37:45 BoogieIcfgContainer [2021-11-25 19:37:45,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:37:45,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:37:45,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:37:45,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:37:45,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:34:31" (1/3) ... [2021-11-25 19:37:45,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44efb54d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:37:45, skipping insertion in model container [2021-11-25 19:37:45,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:34:38" (2/3) ... [2021-11-25 19:37:45,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44efb54d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:37:45, skipping insertion in model container [2021-11-25 19:37:45,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:37:45" (3/3) ... [2021-11-25 19:37:45,710 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-25 19:37:45,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:37:45,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:37:45,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:37:45,803 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:37:45,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:37:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 2779 states, 1656 states have (on average 1.2952898550724639) internal successors, (2145), 1700 states have internal predecessors, (2145), 915 states have call successors, (915), 206 states have call predecessors, (915), 205 states have return successors, (908), 904 states have call predecessors, (908), 908 states have call successors, (908) [2021-11-25 19:37:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-25 19:37:45,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:37:45,926 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:37:45,927 INFO L402 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)] === [2021-11-25 19:37:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:37:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1957563835, now seen corresponding path program 1 times [2021-11-25 19:37:45,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:37:45,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591873604] [2021-11-25 19:37:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:37:45,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:37:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:37:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2021-11-25 19:37:47,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:37:47,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591873604] [2021-11-25 19:37:47,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591873604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:37:47,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:37:47,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:37:47,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520814951] [2021-11-25 19:37:47,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:37:47,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:37:47,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:37:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:37:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:37:47,953 INFO L87 Difference]: Start difference. First operand has 2779 states, 1656 states have (on average 1.2952898550724639) internal successors, (2145), 1700 states have internal predecessors, (2145), 915 states have call successors, (915), 206 states have call predecessors, (915), 205 states have return successors, (908), 904 states have call predecessors, (908), 908 states have call successors, (908) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 19:37:50,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:37:55,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:37:57,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:02,773 INFO L93 Difference]: Finished difference Result 8124 states and 11755 transitions. [2021-11-25 19:38:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:02,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 311 [2021-11-25 19:38:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:02,864 INFO L225 Difference]: With dead ends: 8124 [2021-11-25 19:38:02,864 INFO L226 Difference]: Without dead ends: 5393 [2021-11-25 19:38:02,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:02,900 INFO L933 BasicCegarLoop]: 4232 mSDtfsCounter, 3755 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 7587 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:02,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 7587 Invalid, 1162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1152 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2021-11-25 19:38:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-11-25 19:38:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 5389. [2021-11-25 19:38:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 3235 states have (on average 1.2927357032457496) internal successors, (4182), 3320 states have internal predecessors, (4182), 1745 states have call successors, (1745), 407 states have call predecessors, (1745), 406 states have return successors, (1741), 1733 states have call predecessors, (1741), 1741 states have call successors, (1741) [2021-11-25 19:38:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 7668 transitions. [2021-11-25 19:38:03,392 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 7668 transitions. Word has length 311 [2021-11-25 19:38:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:03,399 INFO L470 AbstractCegarLoop]: Abstraction has 5389 states and 7668 transitions. [2021-11-25 19:38:03,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 19:38:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 7668 transitions. [2021-11-25 19:38:03,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-25 19:38:03,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:03,418 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:38:03,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:38:03,419 INFO L402 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)] === [2021-11-25 19:38:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2013626300, now seen corresponding path program 1 times [2021-11-25 19:38:03,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:03,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285571433] [2021-11-25 19:38:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:03,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2021-11-25 19:38:04,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:04,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285571433] [2021-11-25 19:38:04,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285571433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:04,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:04,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:04,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700204491] [2021-11-25 19:38:04,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:04,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:04,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:04,643 INFO L87 Difference]: Start difference. First operand 5389 states and 7668 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 19:38:06,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:10,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:12,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:19,883 INFO L93 Difference]: Finished difference Result 12064 states and 17168 transitions. [2021-11-25 19:38:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:19,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 322 [2021-11-25 19:38:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:19,947 INFO L225 Difference]: With dead ends: 12064 [2021-11-25 19:38:19,947 INFO L226 Difference]: Without dead ends: 6734 [2021-11-25 19:38:19,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:19,978 INFO L933 BasicCegarLoop]: 4318 mSDtfsCounter, 2843 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 7640 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:19,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2843 Valid, 7640 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1264 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2021-11-25 19:38:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6734 states. [2021-11-25 19:38:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6734 to 6705. [2021-11-25 19:38:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6705 states, 4063 states have (on average 1.2919025350726066) internal successors, (5249), 4165 states have internal predecessors, (5249), 2135 states have call successors, (2135), 506 states have call predecessors, (2135), 504 states have return successors, (2131), 2118 states have call predecessors, (2131), 2131 states have call successors, (2131) [2021-11-25 19:38:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 9515 transitions. [2021-11-25 19:38:20,420 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 9515 transitions. Word has length 322 [2021-11-25 19:38:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:20,423 INFO L470 AbstractCegarLoop]: Abstraction has 6705 states and 9515 transitions. [2021-11-25 19:38:20,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 19:38:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 9515 transitions. [2021-11-25 19:38:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-25 19:38:20,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:20,434 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:38:20,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:38:20,434 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:38:20,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1307579142, now seen corresponding path program 1 times [2021-11-25 19:38:20,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:20,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005662350] [2021-11-25 19:38:20,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:20,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2021-11-25 19:38:21,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:21,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005662350] [2021-11-25 19:38:21,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005662350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:21,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:21,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:21,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300162481] [2021-11-25 19:38:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:21,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:21,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:21,569 INFO L87 Difference]: Start difference. First operand 6705 states and 9515 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 19:38:23,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:31,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:33,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:35,099 INFO L93 Difference]: Finished difference Result 14566 states and 20591 transitions. [2021-11-25 19:38:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 328 [2021-11-25 19:38:35,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:35,165 INFO L225 Difference]: With dead ends: 14566 [2021-11-25 19:38:35,165 INFO L226 Difference]: Without dead ends: 7920 [2021-11-25 19:38:35,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:35,209 INFO L933 BasicCegarLoop]: 4025 mSDtfsCounter, 2800 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2800 SdHoareTripleChecker+Valid, 7347 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:35,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2800 Valid, 7347 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2021-11-25 19:38:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7920 states. [2021-11-25 19:38:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7920 to 7889. [2021-11-25 19:38:35,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7889 states, 4781 states have (on average 1.2898975109809663) internal successors, (6167), 4901 states have internal predecessors, (6167), 2471 states have call successors, (2471), 637 states have call predecessors, (2471), 634 states have return successors, (2468), 2442 states have call predecessors, (2468), 2467 states have call successors, (2468) [2021-11-25 19:38:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7889 states to 7889 states and 11106 transitions. [2021-11-25 19:38:35,685 INFO L78 Accepts]: Start accepts. Automaton has 7889 states and 11106 transitions. Word has length 328 [2021-11-25 19:38:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:35,686 INFO L470 AbstractCegarLoop]: Abstraction has 7889 states and 11106 transitions. [2021-11-25 19:38:35,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 19:38:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7889 states and 11106 transitions. [2021-11-25 19:38:35,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-25 19:38:35,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:35,698 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:38:35,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:38:35,698 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:38:35,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:35,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1418269582, now seen corresponding path program 1 times [2021-11-25 19:38:35,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:35,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050845041] [2021-11-25 19:38:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:35,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2021-11-25 19:38:36,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:36,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050845041] [2021-11-25 19:38:36,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050845041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:36,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:36,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:38:36,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541362491] [2021-11-25 19:38:36,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:36,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:38:36,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:38:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:38:36,697 INFO L87 Difference]: Start difference. First operand 7889 states and 11106 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-25 19:38:38,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:49,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:51,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:38:55,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:55,862 INFO L93 Difference]: Finished difference Result 15153 states and 21374 transitions. [2021-11-25 19:38:55,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:38:55,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 353 [2021-11-25 19:38:55,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:55,966 INFO L225 Difference]: With dead ends: 15153 [2021-11-25 19:38:55,967 INFO L226 Difference]: Without dead ends: 15151 [2021-11-25 19:38:55,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:38:55,978 INFO L933 BasicCegarLoop]: 4257 mSDtfsCounter, 3835 mSDsluCounter, 13478 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3850 SdHoareTripleChecker+Valid, 16037 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:55,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3850 Valid, 16037 Invalid, 2296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2290 Invalid, 3 Unknown, 0 Unchecked, 18.6s Time] [2021-11-25 19:38:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15151 states. [2021-11-25 19:38:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15151 to 15142. [2021-11-25 19:38:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15142 states, 9161 states have (on average 1.2902521558781792) internal successors, (11820), 9398 states have internal predecessors, (11820), 4754 states have call successors, (4754), 1230 states have call predecessors, (4754), 1224 states have return successors, (4792), 4693 states have call predecessors, (4792), 4746 states have call successors, (4792) [2021-11-25 19:38:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15142 states to 15142 states and 21366 transitions. [2021-11-25 19:38:57,122 INFO L78 Accepts]: Start accepts. Automaton has 15142 states and 21366 transitions. Word has length 353 [2021-11-25 19:38:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:57,123 INFO L470 AbstractCegarLoop]: Abstraction has 15142 states and 21366 transitions. [2021-11-25 19:38:57,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-25 19:38:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 15142 states and 21366 transitions. [2021-11-25 19:38:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-11-25 19:38:57,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:57,136 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 5, 5, 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] [2021-11-25 19:38:57,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:38:57,137 INFO L402 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)] === [2021-11-25 19:38:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash -76944224, now seen corresponding path program 1 times [2021-11-25 19:38:57,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:57,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084891638] [2021-11-25 19:38:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:57,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3527 trivial. 0 not checked. [2021-11-25 19:38:58,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:58,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084891638] [2021-11-25 19:38:58,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084891638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:58,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:58,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:38:58,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816959287] [2021-11-25 19:38:58,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:58,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:38:58,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:38:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:38:58,110 INFO L87 Difference]: Start difference. First operand 15142 states and 21366 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-25 19:39:00,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:39:09,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:39:13,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:39:15,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:39:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:39:20,104 INFO L93 Difference]: Finished difference Result 22497 states and 31692 transitions. [2021-11-25 19:39:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:39:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 362 [2021-11-25 19:39:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:39:20,225 INFO L225 Difference]: With dead ends: 22497 [2021-11-25 19:39:20,225 INFO L226 Difference]: Without dead ends: 22495 [2021-11-25 19:39:20,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:39:20,242 INFO L933 BasicCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:39:20,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3831 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2296 Invalid, 4 Unknown, 0 Unchecked, 21.4s Time] [2021-11-25 19:39:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22495 states. [2021-11-25 19:39:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22495 to 22489. [2021-11-25 19:39:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22489 states, 13595 states have (on average 1.2898859874954027) internal successors, (17536), 13952 states have internal predecessors, (17536), 7058 states have call successors, (7058), 1842 states have call predecessors, (7058), 1833 states have return successors, (7093), 6968 states have call predecessors, (7093), 7046 states have call successors, (7093) [2021-11-25 19:39:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22489 states to 22489 states and 31687 transitions. [2021-11-25 19:39:21,492 INFO L78 Accepts]: Start accepts. Automaton has 22489 states and 31687 transitions. Word has length 362 [2021-11-25 19:39:21,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:39:21,494 INFO L470 AbstractCegarLoop]: Abstraction has 22489 states and 31687 transitions. [2021-11-25 19:39:21,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-25 19:39:21,495 INFO L276 IsEmpty]: Start isEmpty. Operand 22489 states and 31687 transitions. [2021-11-25 19:39:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-25 19:39:21,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:39:21,507 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:39:21,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:39:21,507 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:39:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:39:21,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1903823208, now seen corresponding path program 1 times [2021-11-25 19:39:21,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:39:21,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166539454] [2021-11-25 19:39:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:21,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:39:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:39:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3534 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3530 trivial. 0 not checked. [2021-11-25 19:39:22,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:39:22,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166539454] [2021-11-25 19:39:22,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166539454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:39:22,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:39:22,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:39:22,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339861809] [2021-11-25 19:39:22,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:39:22,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:39:22,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:39:22,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:39:22,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:39:22,728 INFO L87 Difference]: Start difference. First operand 22489 states and 31687 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-25 19:39:24,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:39:34,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:39:40,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:39:42,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:39:45,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:39:45,358 INFO L93 Difference]: Finished difference Result 29848 states and 42016 transitions. [2021-11-25 19:39:45,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:39:45,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 366 [2021-11-25 19:39:45,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:39:45,513 INFO L225 Difference]: With dead ends: 29848 [2021-11-25 19:39:45,513 INFO L226 Difference]: Without dead ends: 29846 [2021-11-25 19:39:45,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:39:45,534 INFO L933 BasicCegarLoop]: 4380 mSDtfsCounter, 3816 mSDsluCounter, 13779 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3829 SdHoareTripleChecker+Valid, 16400 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:39:45,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3829 Valid, 16400 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2380 Invalid, 4 Unknown, 0 Unchecked, 21.8s Time] [2021-11-25 19:39:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29846 states. [2021-11-25 19:39:46,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29846 to 29838. [2021-11-25 19:39:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29838 states, 18030 states have (on average 1.289683860232945) internal successors, (23253), 18509 states have internal predecessors, (23253), 9362 states have call successors, (9362), 2455 states have call predecessors, (9362), 2443 states have return successors, (9394), 9241 states have call predecessors, (9394), 9346 states have call successors, (9394) [2021-11-25 19:39:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29838 states to 29838 states and 42009 transitions. [2021-11-25 19:39:47,180 INFO L78 Accepts]: Start accepts. Automaton has 29838 states and 42009 transitions. Word has length 366 [2021-11-25 19:39:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:39:47,181 INFO L470 AbstractCegarLoop]: Abstraction has 29838 states and 42009 transitions. [2021-11-25 19:39:47,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-25 19:39:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 29838 states and 42009 transitions. [2021-11-25 19:39:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-25 19:39:47,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:39:47,194 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:39:47,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:39:47,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:39:47,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:39:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1611867104, now seen corresponding path program 1 times [2021-11-25 19:39:47,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:39:47,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301692299] [2021-11-25 19:39:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:47,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:39:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:39:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3545 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3539 trivial. 0 not checked. [2021-11-25 19:39:48,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:39:48,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301692299] [2021-11-25 19:39:48,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301692299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:39:48,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:39:48,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:39:48,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903144009] [2021-11-25 19:39:48,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:39:48,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:39:48,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:39:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:39:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:39:48,669 INFO L87 Difference]: Start difference. First operand 29838 states and 42009 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-25 19:39:50,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:02,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:04,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:08,687 INFO L93 Difference]: Finished difference Result 29854 states and 42021 transitions. [2021-11-25 19:40:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:40:08,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 372 [2021-11-25 19:40:08,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:08,814 INFO L225 Difference]: With dead ends: 29854 [2021-11-25 19:40:08,815 INFO L226 Difference]: Without dead ends: 29852 [2021-11-25 19:40:08,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:40:08,827 INFO L933 BasicCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3829 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:08,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3829 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 19.2s Time] [2021-11-25 19:40:08,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29852 states. [2021-11-25 19:40:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29852 to 29846. [2021-11-25 19:40:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29846 states, 18036 states have (on average 1.2895874916833001) internal successors, (23259), 18515 states have internal predecessors, (23259), 9362 states have call successors, (9362), 2457 states have call predecessors, (9362), 2445 states have return successors, (9394), 9241 states have call predecessors, (9394), 9346 states have call successors, (9394) [2021-11-25 19:40:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29846 states to 29846 states and 42015 transitions. [2021-11-25 19:40:10,552 INFO L78 Accepts]: Start accepts. Automaton has 29846 states and 42015 transitions. Word has length 372 [2021-11-25 19:40:10,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:10,554 INFO L470 AbstractCegarLoop]: Abstraction has 29846 states and 42015 transitions. [2021-11-25 19:40:10,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-25 19:40:10,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29846 states and 42015 transitions. [2021-11-25 19:40:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-25 19:40:10,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:10,566 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 4, 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] [2021-11-25 19:40:10,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:40:10,567 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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)] === [2021-11-25 19:40:10,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1067320530, now seen corresponding path program 1 times [2021-11-25 19:40:10,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:10,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994696717] [2021-11-25 19:40:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:10,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3513 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2021-11-25 19:40:11,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:11,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994696717] [2021-11-25 19:40:11,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994696717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:11,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:11,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:40:11,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844658971] [2021-11-25 19:40:11,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:11,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:40:11,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:40:11,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:11,696 INFO L87 Difference]: Start difference. First operand 29846 states and 42015 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-25 19:40:13,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:25,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:27,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:29,606 INFO L93 Difference]: Finished difference Result 69557 states and 98059 transitions. [2021-11-25 19:40:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:40:29,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 369 [2021-11-25 19:40:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:29,986 INFO L225 Difference]: With dead ends: 69557 [2021-11-25 19:40:29,991 INFO L226 Difference]: Without dead ends: 40313 [2021-11-25 19:40:30,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:30,103 INFO L933 BasicCegarLoop]: 5717 mSDtfsCounter, 2837 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 9037 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:30,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2837 Valid, 9037 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1631 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2021-11-25 19:40:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40313 states. [2021-11-25 19:40:31,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40313 to 40175. [2021-11-25 19:40:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40175 states, 24408 states have (on average 1.2919124877089478) internal successors, (31533), 25037 states have internal predecessors, (31533), 12503 states have call successors, (12503), 3281 states have call predecessors, (12503), 3261 states have return successors, (12540), 12332 states have call predecessors, (12540), 12487 states have call successors, (12540) [2021-11-25 19:40:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40175 states to 40175 states and 56576 transitions. [2021-11-25 19:40:31,895 INFO L78 Accepts]: Start accepts. Automaton has 40175 states and 56576 transitions. Word has length 369 [2021-11-25 19:40:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:31,897 INFO L470 AbstractCegarLoop]: Abstraction has 40175 states and 56576 transitions. [2021-11-25 19:40:31,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-25 19:40:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 40175 states and 56576 transitions. [2021-11-25 19:40:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-11-25 19:40:31,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:31,910 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 5, 5, 5, 4, 4, 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] [2021-11-25 19:40:31,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:40:31,910 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:40:31,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1494722584, now seen corresponding path program 1 times [2021-11-25 19:40:31,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:31,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698314750] [2021-11-25 19:40:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:31,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3550 trivial. 0 not checked. [2021-11-25 19:40:33,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:33,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698314750] [2021-11-25 19:40:33,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698314750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:33,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:33,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:40:33,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288742715] [2021-11-25 19:40:33,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:33,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:40:33,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:40:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:40:33,493 INFO L87 Difference]: Start difference. First operand 40175 states and 56576 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 19:40:35,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:47,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:49,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:54,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:54,360 INFO L93 Difference]: Finished difference Result 40191 states and 56588 transitions. [2021-11-25 19:40:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:40:54,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 376 [2021-11-25 19:40:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:54,530 INFO L225 Difference]: With dead ends: 40191 [2021-11-25 19:40:54,530 INFO L226 Difference]: Without dead ends: 40189 [2021-11-25 19:40:54,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:40:54,548 INFO L933 BasicCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:54,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3828 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 19.7s Time] [2021-11-25 19:40:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40189 states. [2021-11-25 19:40:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40189 to 40183. [2021-11-25 19:40:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40183 states, 24414 states have (on average 1.2918407471123126) internal successors, (31539), 25043 states have internal predecessors, (31539), 12503 states have call successors, (12503), 3283 states have call predecessors, (12503), 3263 states have return successors, (12540), 12332 states have call predecessors, (12540), 12487 states have call successors, (12540) [2021-11-25 19:40:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40183 states to 40183 states and 56582 transitions. [2021-11-25 19:40:56,471 INFO L78 Accepts]: Start accepts. Automaton has 40183 states and 56582 transitions. Word has length 376 [2021-11-25 19:40:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:56,473 INFO L470 AbstractCegarLoop]: Abstraction has 40183 states and 56582 transitions. [2021-11-25 19:40:56,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 19:40:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 40183 states and 56582 transitions. [2021-11-25 19:40:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-25 19:40:56,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:56,495 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:40:56,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:40:56,495 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:40:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:56,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1774340876, now seen corresponding path program 1 times [2021-11-25 19:40:56,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:56,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311413720] [2021-11-25 19:40:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:56,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3569 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3559 trivial. 0 not checked. [2021-11-25 19:40:57,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311413720] [2021-11-25 19:40:57,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311413720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:57,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:57,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:40:57,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227700847] [2021-11-25 19:40:57,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:57,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:40:57,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:40:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:40:57,821 INFO L87 Difference]: Start difference. First operand 40183 states and 56582 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-25 19:40:59,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:11,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:13,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:19,039 INFO L93 Difference]: Finished difference Result 40199 states and 56594 transitions. [2021-11-25 19:41:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:41:19,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 378 [2021-11-25 19:41:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:19,201 INFO L225 Difference]: With dead ends: 40199 [2021-11-25 19:41:19,202 INFO L226 Difference]: Without dead ends: 40197 [2021-11-25 19:41:19,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:41:19,220 INFO L933 BasicCegarLoop]: 4255 mSDtfsCounter, 3818 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:19,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3828 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 20.0s Time] [2021-11-25 19:41:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40197 states. [2021-11-25 19:41:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40197 to 40191. [2021-11-25 19:41:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40191 states, 24420 states have (on average 1.2917690417690417) internal successors, (31545), 25049 states have internal predecessors, (31545), 12503 states have call successors, (12503), 3285 states have call predecessors, (12503), 3265 states have return successors, (12540), 12332 states have call predecessors, (12540), 12487 states have call successors, (12540) [2021-11-25 19:41:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40191 states to 40191 states and 56588 transitions. [2021-11-25 19:41:20,832 INFO L78 Accepts]: Start accepts. Automaton has 40191 states and 56588 transitions. Word has length 378 [2021-11-25 19:41:20,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:41:20,833 INFO L470 AbstractCegarLoop]: Abstraction has 40191 states and 56588 transitions. [2021-11-25 19:41:20,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-25 19:41:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 40191 states and 56588 transitions. [2021-11-25 19:41:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-11-25 19:41:20,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:20,844 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:20,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:41:20,844 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:41:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1126967154, now seen corresponding path program 1 times [2021-11-25 19:41:20,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:20,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504304464] [2021-11-25 19:41:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:20,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:41:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3579 trivial. 0 not checked. [2021-11-25 19:41:22,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:22,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504304464] [2021-11-25 19:41:22,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504304464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:41:22,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:41:22,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:41:22,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571158162] [2021-11-25 19:41:22,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:41:22,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:41:22,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:41:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:41:22,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:41:22,098 INFO L87 Difference]: Start difference. First operand 40191 states and 56588 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 19:41:24,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:37,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:39,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:45,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:45,106 INFO L93 Difference]: Finished difference Result 59345 states and 83655 transitions. [2021-11-25 19:41:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:41:45,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 383 [2021-11-25 19:41:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:45,318 INFO L225 Difference]: With dead ends: 59345 [2021-11-25 19:41:45,318 INFO L226 Difference]: Without dead ends: 59343 [2021-11-25 19:41:45,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:41:45,336 INFO L933 BasicCegarLoop]: 4236 mSDtfsCounter, 3812 mSDsluCounter, 13343 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3821 SdHoareTripleChecker+Valid, 15893 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:45,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3821 Valid, 15893 Invalid, 2285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2279 Invalid, 3 Unknown, 0 Unchecked, 21.1s Time] [2021-11-25 19:41:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59343 states. [2021-11-25 19:41:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59343 to 59329. [2021-11-25 19:41:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59329 states, 36041 states have (on average 1.2910851530201715) internal successors, (46532), 36942 states have internal predecessors, (46532), 18435 states have call successors, (18435), 4888 states have call predecessors, (18435), 4850 states have return successors, (18672), 18162 states have call predecessors, (18672), 18411 states have call successors, (18672) [2021-11-25 19:41:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59329 states to 59329 states and 83639 transitions. [2021-11-25 19:41:47,653 INFO L78 Accepts]: Start accepts. Automaton has 59329 states and 83639 transitions. Word has length 383 [2021-11-25 19:41:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:41:47,653 INFO L470 AbstractCegarLoop]: Abstraction has 59329 states and 83639 transitions. [2021-11-25 19:41:47,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 19:41:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 59329 states and 83639 transitions. [2021-11-25 19:41:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-25 19:41:47,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:47,666 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:47,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:41:47,667 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:41:47,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash -627790988, now seen corresponding path program 1 times [2021-11-25 19:41:47,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:47,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692495718] [2021-11-25 19:41:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:47,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:41:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3617 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3603 trivial. 0 not checked. [2021-11-25 19:41:48,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:48,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692495718] [2021-11-25 19:41:48,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692495718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:41:48,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:41:48,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:41:48,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988033745] [2021-11-25 19:41:48,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:41:48,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:41:48,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:41:48,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:41:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:41:48,894 INFO L87 Difference]: Start difference. First operand 59329 states and 83639 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 19:41:51,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:04,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:06,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:11,681 INFO L93 Difference]: Finished difference Result 59345 states and 83651 transitions. [2021-11-25 19:42:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:42:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 388 [2021-11-25 19:42:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:11,953 INFO L225 Difference]: With dead ends: 59345 [2021-11-25 19:42:11,953 INFO L226 Difference]: Without dead ends: 59343 [2021-11-25 19:42:11,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:42:11,982 INFO L933 BasicCegarLoop]: 4239 mSDtfsCounter, 3818 mSDsluCounter, 13438 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 15977 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:11,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3826 Valid, 15977 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2291 Invalid, 3 Unknown, 0 Unchecked, 21.0s Time] [2021-11-25 19:42:12,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59343 states. [2021-11-25 19:42:14,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59343 to 59337. [2021-11-25 19:42:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59337 states, 36047 states have (on average 1.291036702083391) internal successors, (46538), 36948 states have internal predecessors, (46538), 18435 states have call successors, (18435), 4890 states have call predecessors, (18435), 4852 states have return successors, (18672), 18162 states have call predecessors, (18672), 18411 states have call successors, (18672) [2021-11-25 19:42:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59337 states to 59337 states and 83645 transitions. [2021-11-25 19:42:14,447 INFO L78 Accepts]: Start accepts. Automaton has 59337 states and 83645 transitions. Word has length 388 [2021-11-25 19:42:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:14,448 INFO L470 AbstractCegarLoop]: Abstraction has 59337 states and 83645 transitions. [2021-11-25 19:42:14,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 19:42:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 59337 states and 83645 transitions. [2021-11-25 19:42:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2021-11-25 19:42:14,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:14,677 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:14,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:42:14,678 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:42:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:14,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1671199512, now seen corresponding path program 1 times [2021-11-25 19:42:14,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:14,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085383144] [2021-11-25 19:42:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:14,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3654 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3638 trivial. 0 not checked. [2021-11-25 19:42:15,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:15,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085383144] [2021-11-25 19:42:15,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085383144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:15,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:15,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:42:15,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467227385] [2021-11-25 19:42:15,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:15,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:42:15,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:42:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:42:15,691 INFO L87 Difference]: Start difference. First operand 59337 states and 83645 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:42:18,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:28,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:36,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:38,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:41,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:41,892 INFO L93 Difference]: Finished difference Result 59352 states and 83656 transitions. [2021-11-25 19:42:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:42:41,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 396 [2021-11-25 19:42:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:42,095 INFO L225 Difference]: With dead ends: 59352 [2021-11-25 19:42:42,095 INFO L226 Difference]: Without dead ends: 59350 [2021-11-25 19:42:42,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:42:42,116 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 3816 mSDsluCounter, 13749 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 16355 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:42,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3823 Valid, 16355 Invalid, 2386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2380 Invalid, 4 Unknown, 0 Unchecked, 24.3s Time] [2021-11-25 19:42:42,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59350 states. [2021-11-25 19:42:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59350 to 59341. [2021-11-25 19:42:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59341 states, 36050 states have (on average 1.291012482662968) internal successors, (46541), 36951 states have internal predecessors, (46541), 18435 states have call successors, (18435), 4891 states have call predecessors, (18435), 4853 states have return successors, (18672), 18162 states have call predecessors, (18672), 18411 states have call successors, (18672) [2021-11-25 19:42:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59341 states to 59341 states and 83648 transitions. [2021-11-25 19:42:44,861 INFO L78 Accepts]: Start accepts. Automaton has 59341 states and 83648 transitions. Word has length 396 [2021-11-25 19:42:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:44,862 INFO L470 AbstractCegarLoop]: Abstraction has 59341 states and 83648 transitions. [2021-11-25 19:42:44,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:42:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 59341 states and 83648 transitions. [2021-11-25 19:42:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-25 19:42:44,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:44,875 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 10, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:44,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:42:44,876 INFO L402 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)] === [2021-11-25 19:42:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash 485460640, now seen corresponding path program 1 times [2021-11-25 19:42:44,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:44,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408613370] [2021-11-25 19:42:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:44,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3689 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3671 trivial. 0 not checked. [2021-11-25 19:42:46,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:46,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408613370] [2021-11-25 19:42:46,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408613370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:46,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:46,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:42:46,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630105635] [2021-11-25 19:42:46,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:46,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:42:46,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:42:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:42:46,106 INFO L87 Difference]: Start difference. First operand 59341 states and 83648 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 19:42:48,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:02,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:04,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:09,276 INFO L93 Difference]: Finished difference Result 94223 states and 132962 transitions. [2021-11-25 19:43:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:43:09,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 402 [2021-11-25 19:43:09,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:09,904 INFO L225 Difference]: With dead ends: 94223 [2021-11-25 19:43:09,904 INFO L226 Difference]: Without dead ends: 94221 [2021-11-25 19:43:09,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:43:09,936 INFO L933 BasicCegarLoop]: 4121 mSDtfsCounter, 3727 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3733 SdHoareTripleChecker+Valid, 15143 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:09,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3733 Valid, 15143 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2231 Invalid, 3 Unknown, 0 Unchecked, 20.9s Time] [2021-11-25 19:43:10,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94221 states. [2021-11-25 19:43:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94221 to 94199. [2021-11-25 19:43:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94199 states, 57356 states have (on average 1.2937966385382522) internal successors, (74207), 58857 states have internal predecessors, (74207), 28965 states have call successors, (28965), 8053 states have call predecessors, (28965), 7875 states have return successors, (29764), 28268 states have call predecessors, (29764), 28925 states have call successors, (29764) [2021-11-25 19:43:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94199 states to 94199 states and 132936 transitions. [2021-11-25 19:43:14,167 INFO L78 Accepts]: Start accepts. Automaton has 94199 states and 132936 transitions. Word has length 402 [2021-11-25 19:43:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:14,168 INFO L470 AbstractCegarLoop]: Abstraction has 94199 states and 132936 transitions. [2021-11-25 19:43:14,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 19:43:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 94199 states and 132936 transitions. [2021-11-25 19:43:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-11-25 19:43:14,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:14,184 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:14,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:43:14,185 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:43:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:14,185 INFO L85 PathProgramCache]: Analyzing trace with hash 277322904, now seen corresponding path program 1 times [2021-11-25 19:43:14,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:14,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604865323] [2021-11-25 19:43:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:14,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3726 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2021-11-25 19:43:15,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:15,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604865323] [2021-11-25 19:43:15,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604865323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:15,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:15,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:43:15,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138259295] [2021-11-25 19:43:15,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:15,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:43:15,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:15,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:43:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:43:15,561 INFO L87 Difference]: Start difference. First operand 94199 states and 132936 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:43:17,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:28,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:36,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:38,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:42,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:42,921 INFO L93 Difference]: Finished difference Result 94214 states and 132947 transitions. [2021-11-25 19:43:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:43:42,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 406 [2021-11-25 19:43:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:43,298 INFO L225 Difference]: With dead ends: 94214 [2021-11-25 19:43:43,298 INFO L226 Difference]: Without dead ends: 94212 [2021-11-25 19:43:43,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:43:43,336 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 3816 mSDsluCounter, 13785 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3821 SdHoareTripleChecker+Valid, 16409 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:43,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3821 Valid, 16409 Invalid, 2386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2380 Invalid, 4 Unknown, 0 Unchecked, 24.4s Time] [2021-11-25 19:43:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94212 states. [2021-11-25 19:43:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94212 to 94203. [2021-11-25 19:43:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94203 states, 57359 states have (on average 1.2937812723373838) internal successors, (74210), 58860 states have internal predecessors, (74210), 28965 states have call successors, (28965), 8054 states have call predecessors, (28965), 7876 states have return successors, (29764), 28268 states have call predecessors, (29764), 28925 states have call successors, (29764) [2021-11-25 19:43:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94203 states to 94203 states and 132939 transitions. [2021-11-25 19:43:48,005 INFO L78 Accepts]: Start accepts. Automaton has 94203 states and 132939 transitions. Word has length 406 [2021-11-25 19:43:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:48,008 INFO L470 AbstractCegarLoop]: Abstraction has 94203 states and 132939 transitions. [2021-11-25 19:43:48,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:43:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 94203 states and 132939 transitions. [2021-11-25 19:43:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-25 19:43:48,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:48,022 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 12, 11, 11, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:48,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:43:48,022 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:43:48,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:48,023 INFO L85 PathProgramCache]: Analyzing trace with hash 256621088, now seen corresponding path program 1 times [2021-11-25 19:43:48,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:48,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811336800] [2021-11-25 19:43:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:48,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3769 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3747 trivial. 0 not checked. [2021-11-25 19:43:49,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:49,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811336800] [2021-11-25 19:43:49,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811336800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:49,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:43:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763612403] [2021-11-25 19:43:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:49,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:43:49,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:43:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:43:49,040 INFO L87 Difference]: Start difference. First operand 94203 states and 132939 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:43:51,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:59,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:44:03,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:44:10,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:44:12,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:44:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:16,973 INFO L93 Difference]: Finished difference Result 94218 states and 132950 transitions. [2021-11-25 19:44:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:44:16,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 412 [2021-11-25 19:44:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:17,553 INFO L225 Difference]: With dead ends: 94218 [2021-11-25 19:44:17,553 INFO L226 Difference]: Without dead ends: 94216 [2021-11-25 19:44:17,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:44:17,590 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 3816 mSDsluCounter, 13785 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 16409 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:17,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3820 Valid, 16409 Invalid, 2386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2380 Invalid, 4 Unknown, 0 Unchecked, 25.3s Time] [2021-11-25 19:44:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94216 states. [2021-11-25 19:44:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94216 to 94207. [2021-11-25 19:44:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94207 states, 57362 states have (on average 1.2937659077438026) internal successors, (74213), 58863 states have internal predecessors, (74213), 28965 states have call successors, (28965), 8055 states have call predecessors, (28965), 7877 states have return successors, (29764), 28268 states have call predecessors, (29764), 28925 states have call successors, (29764) [2021-11-25 19:44:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94207 states to 94207 states and 132942 transitions. [2021-11-25 19:44:22,082 INFO L78 Accepts]: Start accepts. Automaton has 94207 states and 132942 transitions. Word has length 412 [2021-11-25 19:44:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:22,082 INFO L470 AbstractCegarLoop]: Abstraction has 94207 states and 132942 transitions. [2021-11-25 19:44:22,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:44:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 94207 states and 132942 transitions. [2021-11-25 19:44:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-25 19:44:22,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:22,100 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:22,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 19:44:22,101 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:44:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2079632782, now seen corresponding path program 1 times [2021-11-25 19:44:22,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:22,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361526386] [2021-11-25 19:44:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:22,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3807 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3783 trivial. 0 not checked. [2021-11-25 19:44:23,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361526386] [2021-11-25 19:44:23,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361526386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:44:23,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:44:23,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:44:23,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6804579] [2021-11-25 19:44:23,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:44:23,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:44:23,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:23,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:44:23,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:44:23,137 INFO L87 Difference]: Start difference. First operand 94207 states and 132942 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:44:25,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:44:39,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:44:41,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:44:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:48,075 INFO L93 Difference]: Finished difference Result 94223 states and 132954 transitions. [2021-11-25 19:44:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:44:48,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 413 [2021-11-25 19:44:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:48,421 INFO L225 Difference]: With dead ends: 94223 [2021-11-25 19:44:48,422 INFO L226 Difference]: Without dead ends: 94221 [2021-11-25 19:44:48,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:44:48,454 INFO L933 BasicCegarLoop]: 4255 mSDtfsCounter, 3818 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3821 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:48,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3821 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 22.1s Time] [2021-11-25 19:44:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94221 states. [2021-11-25 19:44:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94221 to 94215. [2021-11-25 19:44:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94215 states, 57368 states have (on average 1.2937351833774926) internal successors, (74219), 58869 states have internal predecessors, (74219), 28965 states have call successors, (28965), 8057 states have call predecessors, (28965), 7879 states have return successors, (29764), 28268 states have call predecessors, (29764), 28925 states have call successors, (29764) [2021-11-25 19:44:52,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94215 states to 94215 states and 132948 transitions. [2021-11-25 19:44:52,899 INFO L78 Accepts]: Start accepts. Automaton has 94215 states and 132948 transitions. Word has length 413 [2021-11-25 19:44:52,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:52,900 INFO L470 AbstractCegarLoop]: Abstraction has 94215 states and 132948 transitions. [2021-11-25 19:44:52,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:44:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 94215 states and 132948 transitions. [2021-11-25 19:44:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-25 19:44:52,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:52,911 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 14, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:52,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:44:52,911 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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)] === [2021-11-25 19:44:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1039862542, now seen corresponding path program 1 times [2021-11-25 19:44:52,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:52,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265639310] [2021-11-25 19:44:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:52,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3864 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3838 trivial. 0 not checked. [2021-11-25 19:44:54,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:54,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265639310] [2021-11-25 19:44:54,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265639310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:44:54,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:44:54,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:44:54,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930677183] [2021-11-25 19:44:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:44:54,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:44:54,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:44:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:44:54,247 INFO L87 Difference]: Start difference. First operand 94215 states and 132948 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-25 19:44:56,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:08,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:13,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:15,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:45:22,055 INFO L93 Difference]: Finished difference Result 94231 states and 132960 transitions. [2021-11-25 19:45:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:45:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 421 [2021-11-25 19:45:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:45:22,616 INFO L225 Difference]: With dead ends: 94231 [2021-11-25 19:45:22,616 INFO L226 Difference]: Without dead ends: 94229 [2021-11-25 19:45:22,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:45:22,656 INFO L933 BasicCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:45:22,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3819 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2296 Invalid, 4 Unknown, 0 Unchecked, 25.0s Time] [2021-11-25 19:45:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94229 states. [2021-11-25 19:45:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94229 to 94223. [2021-11-25 19:45:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94223 states, 57374 states have (on average 1.293704465437306) internal successors, (74225), 58875 states have internal predecessors, (74225), 28965 states have call successors, (28965), 8059 states have call predecessors, (28965), 7881 states have return successors, (29764), 28268 states have call predecessors, (29764), 28925 states have call successors, (29764) [2021-11-25 19:45:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94223 states to 94223 states and 132954 transitions. [2021-11-25 19:45:27,181 INFO L78 Accepts]: Start accepts. Automaton has 94223 states and 132954 transitions. Word has length 421 [2021-11-25 19:45:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:45:27,182 INFO L470 AbstractCegarLoop]: Abstraction has 94223 states and 132954 transitions. [2021-11-25 19:45:27,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-25 19:45:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 94223 states and 132954 transitions. [2021-11-25 19:45:27,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-11-25 19:45:27,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:45:27,193 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 15, 14, 14, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:45:27,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:45:27,193 INFO L402 AbstractCegarLoop]: === Iteration 19 === 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)] === [2021-11-25 19:45:27,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:45:27,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1124232262, now seen corresponding path program 1 times [2021-11-25 19:45:27,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:45:27,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569190141] [2021-11-25 19:45:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:27,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:45:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3919 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 3891 trivial. 0 not checked. [2021-11-25 19:45:28,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:45:28,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569190141] [2021-11-25 19:45:28,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569190141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:45:28,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:45:28,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:45:28,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150544276] [2021-11-25 19:45:28,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:45:28,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:45:28,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:45:28,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:45:28,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:45:28,536 INFO L87 Difference]: Start difference. First operand 94223 states and 132954 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-25 19:45:30,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:42,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:47,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:49,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:51,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:45:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:45:58,335 INFO L93 Difference]: Finished difference Result 94239 states and 132966 transitions. [2021-11-25 19:45:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:45:58,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 427 [2021-11-25 19:45:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:45:58,692 INFO L225 Difference]: With dead ends: 94239 [2021-11-25 19:45:58,692 INFO L226 Difference]: Without dead ends: 94235 [2021-11-25 19:45:58,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:45:58,726 INFO L933 BasicCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:45:58,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3818 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2295 Invalid, 5 Unknown, 0 Unchecked, 26.9s Time] [2021-11-25 19:45:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94235 states. [2021-11-25 19:46:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94235 to 94229. [2021-11-25 19:46:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94229 states, 57379 states have (on average 1.2936614440823297) internal successors, (74229), 58879 states have internal predecessors, (74229), 28965 states have call successors, (28965), 8061 states have call predecessors, (28965), 7882 states have return successors, (29764), 28268 states have call predecessors, (29764), 28925 states have call successors, (29764) [2021-11-25 19:46:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94229 states to 94229 states and 132958 transitions. [2021-11-25 19:46:03,525 INFO L78 Accepts]: Start accepts. Automaton has 94229 states and 132958 transitions. Word has length 427 [2021-11-25 19:46:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:03,526 INFO L470 AbstractCegarLoop]: Abstraction has 94229 states and 132958 transitions. [2021-11-25 19:46:03,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-25 19:46:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 94229 states and 132958 transitions. [2021-11-25 19:46:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-25 19:46:03,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:03,542 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:03,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 19:46:03,542 INFO L402 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)] === [2021-11-25 19:46:03,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:03,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2073116317, now seen corresponding path program 1 times [2021-11-25 19:46:03,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:46:03,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013590712] [2021-11-25 19:46:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:03,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:46:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3738 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3738 trivial. 0 not checked. [2021-11-25 19:46:04,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:46:04,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013590712] [2021-11-25 19:46:04,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013590712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:46:04,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:46:04,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:46:04,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626488695] [2021-11-25 19:46:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:46:04,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:46:04,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:46:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:46:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:46:04,825 INFO L87 Difference]: Start difference. First operand 94229 states and 132958 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 19:46:07,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:46:21,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:46:23,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:46:29,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:29,793 INFO L93 Difference]: Finished difference Result 94349 states and 133074 transitions. [2021-11-25 19:46:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:46:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 432 [2021-11-25 19:46:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:30,270 INFO L225 Difference]: With dead ends: 94349 [2021-11-25 19:46:30,270 INFO L226 Difference]: Without dead ends: 94347 [2021-11-25 19:46:30,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:46:30,306 INFO L933 BasicCegarLoop]: 4236 mSDtfsCounter, 3787 mSDsluCounter, 13356 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3790 SdHoareTripleChecker+Valid, 15906 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:30,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3790 Valid, 15906 Invalid, 2272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2266 Invalid, 3 Unknown, 0 Unchecked, 22.1s Time] [2021-11-25 19:46:30,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94347 states. [2021-11-25 19:46:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94347 to 94325. [2021-11-25 19:46:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94325 states, 57451 states have (on average 1.29329341525822) internal successors, (74301), 58951 states have internal predecessors, (74301), 28965 states have call successors, (28965), 8085 states have call predecessors, (28965), 7906 states have return successors, (29764), 28268 states have call predecessors, (29764), 28925 states have call successors, (29764) [2021-11-25 19:46:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94325 states to 94325 states and 133030 transitions. [2021-11-25 19:46:35,187 INFO L78 Accepts]: Start accepts. Automaton has 94325 states and 133030 transitions. Word has length 432 [2021-11-25 19:46:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:35,187 INFO L470 AbstractCegarLoop]: Abstraction has 94325 states and 133030 transitions. [2021-11-25 19:46:35,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 19:46:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 94325 states and 133030 transitions. [2021-11-25 19:46:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-25 19:46:35,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:35,196 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 16, 15, 15, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:35,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 19:46:35,196 INFO L402 AbstractCegarLoop]: === Iteration 21 === 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)] === [2021-11-25 19:46:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash -994768608, now seen corresponding path program 1 times [2021-11-25 19:46:35,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:46:35,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579136555] [2021-11-25 19:46:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:35,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:46:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3977 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3947 trivial. 0 not checked. [2021-11-25 19:46:36,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:46:36,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579136555] [2021-11-25 19:46:36,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579136555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:46:36,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:46:36,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:46:36,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337263431] [2021-11-25 19:46:36,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:46:36,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:46:36,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:46:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:46:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:46:36,279 INFO L87 Difference]: Start difference. First operand 94325 states and 133030 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-25 19:46:38,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:46:53,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:46:55,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:47:02,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:47:02,135 INFO L93 Difference]: Finished difference Result 94337 states and 133038 transitions. [2021-11-25 19:47:02,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:47:02,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 432 [2021-11-25 19:47:02,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:47:02,517 INFO L225 Difference]: With dead ends: 94337 [2021-11-25 19:47:02,517 INFO L226 Difference]: Without dead ends: 94188 [2021-11-25 19:47:02,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:47:02,554 INFO L933 BasicCegarLoop]: 4240 mSDtfsCounter, 3817 mSDsluCounter, 13440 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3817 SdHoareTripleChecker+Valid, 15980 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:47:02,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3817 Valid, 15980 Invalid, 2293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2288 Invalid, 3 Unknown, 0 Unchecked, 22.9s Time] [2021-11-25 19:47:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94188 states.